All 137 rides

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137 rides

Percentage CalculatorWhat is X% of Y, X is what % of Y, percentage change, increase or decrease by a percent, value before a change and percentage points – seven cards that work at once.
Loan CalculatorMonthly payment, total interest and a full amortization schedule for any fixed-rate loan in any currency. Add fees for the APR, or an extra payment to see what you save.
VAT CalculatorAdd VAT to a net price or take it out of a gross price at any rate. Preset chips for common rates (5–27%), the tax amount, and the same amount shown at other rates.
BMI CalculatorCalculate your BMI from height and weight (metric or imperial) with the WHO adult category, the healthy weight range for your height and BMI prime.
Ideal Weight CalculatorIdeal body weight for your height and sex by the Devine, Robinson, Miller and Hamwi formulas, plus the BMI 18.5–24.9 healthy range, in kg or lb.
Body Fat CalculatorBody fat percentage from neck, waist and hip tape measurements with the US Navy method, plus ACE category, fat and lean mass and a BMI-based estimate.
Body Surface Area CalculatorBody surface area in m² from height and weight by five formulas – Mosteller, Du Bois, Haycock, Gehan & George and Boyd – side by side, metric or imperial.
TDEE CalculatorDaily calorie needs from Mifflin–St Jeor, Harris–Benedict or Katch–McArdle BMR and activity level, with weight-loss and gain targets and macro grams.
Fat-Burning Heart Rate CalculatorFat-burning zone (60–70% of max heart rate) and five training zones by age with the Tanaka, Fox or Gellish formula, plus Karvonen when you know your resting rate.
Waist-to-Hip Ratio CalculatorWaist divided by hip compared with the WHO cut-offs (0.90 men, 0.85 women), plus waist circumference levels and the waist-to-height "half your height" rule.
Water Intake CalculatorA rule-of-thumb daily water estimate from body weight, exercise and climate in ml, litres, cups and fluid ounces, next to the EFSA and US adequate intake values.
Sleep CalculatorBest bedtimes for a wake-up time, wake-up times for a bedtime, or what to aim for if you sleep now – in 90-minute cycles plus 15 minutes to fall asleep.
Pace CalculatorRunning pace per km or mile from time and distance, finish time from a pace, or distance covered – with 5K, 10K, half and marathon presets, speed and even splits.
BAC CalculatorEstimate blood alcohol content from your drinks, weight, sex and hours since the first drink with the Widmark formula, plus the time back to 0.00 and under common limits.
Blood Pressure CalculatorBlood pressure category under the 2017 ACC/AHA and 2024 ESC guidelines, with pulse pressure, mean arterial pressure, what to do next and a reading log on your device.
Blood Type CalculatorWhich ABO and Rh blood types a child can inherit from two parents, with probabilities and Punnett squares – or check whether parents could have a child of a given type.
Ovulation CalculatorEstimate your ovulation day and six-day fertile window from your last period, cycle length and luteal phase, plus the next three periods on a cycle calendar.
Pregnancy CalculatorDue date from your last period (Naegele’s rule, cycle-adjusted), conception date or IVF transfer, plus weeks pregnant, trimester, milestone dates and a countdown.
Pet Age CalculatorDog or cat age in human years with the size-based veterinary chart, the 2020 epigenetic formula (16 ln(age) + 31) for dogs and the 15/9/4 cat chart – plus the life stage.
Wind Chill CalculatorFeels-like temperature from air temperature and wind with the NWS / Environment Canada wind chill formula and frostbite bands, plus a heat index mode for hot, humid days.
Compound Interest CalculatorSee how savings grow with daily, monthly, quarterly, yearly or continuous compounding, optional regular deposits, and a year-by-year table of interest earned.
Savings Goal CalculatorFind the monthly deposit needed to reach a savings target by a deadline, or how long a fixed monthly deposit takes, with interest and a progress bar.
Tip CalculatorWork out the tip and total for any bill, split it between people, round up to whole amounts and tip on the pre-tax amount if you prefer.
Fuel Cost CalculatorCalculate the fuel and cost of a trip from distance, consumption (L/100 km, km/L or mpg) and fuel price, with round trip and cost per passenger.
Electricity Cost CalculatorWhat any appliance costs to run from its watts (or kW, or amps × volts), hours of use and your price per kWh – per day, month and year, for several devices at once.
Download Time CalculatorEstimate how long a download or upload takes from the file size and your connection speed, with bits vs bytes handled correctly, overhead and a table of common speeds.
Tile CalculatorWork out how many tiles and boxes you need from the room size, tile size, grout gap and waste allowance, in metric or imperial, with the cost if you know the price.
Bicycle Frame Size CalculatorFind your bike frame size from your inseam for road, mountain, hybrid and city bikes, in cm and inches, with a height-based size chart as a cross-check.
Alcohol Dilution CalculatorHow much water to add to dilute a spirit from one ABV to another, or how much spirit and water make a target volume, with the Pearson square and a contraction note.
Scientific CalculatorOnline scientific calculator with keyboard input: parentheses, powers, roots, trig in degrees or radians, logs, factorials, memory and history. Basic mode included.
Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers with the working shown step by step, simplified results, decimal and percent equivalents and a comparison.
Decimal to Fraction CalculatorConvert any decimal to its simplest fraction, including repeating decimals like 0.(3) or 0.1666…, with the working shown and the closest fractions for inch rulers (2–64).
GCD and LCM CalculatorFind the greatest common divisor (GCF/HCF) and least common multiple of 2 to 10 numbers, with Euclid’s algorithm written out and the prime factorisation of each number.
Circle CalculatorEnter any one of radius, diameter, circumference or area and get the other three, plus arc length, chord and sector area for a central angle, in any unit.
Cylinder Volume and Surface Area CalculatorVolume and surface area of a cylinder from its radius or diameter and height, with lateral, base and total area, and the volume in litres and US or UK gallons.
PSN Trophy Level CalculatorEnter your platinum, gold, silver and bronze trophies to get your PlayStation trophy level, total points, progress and how many trophies the next level needs.
Profit Margin & Markup CalculatorCost and price in, profit, margin and markup out – or set a target margin or markup and get the selling price, with fixed costs and a percentage fee included.
Grade & Final Grade CalculatorAdd your assessments with scores and weights to get your weighted grade, then see exactly what you need on the final exam to reach the course grade you want.
HYROX Race PlannerPlan a HYROX race: run pace, eight station times and Roxzone transitions add up to a finish time with splits – or work back from a goal time to the pace you need.
Length ConverterConvert lengths between metric and imperial units with exact factors (1 in = 25.4 mm, 1 mi = 1.609344 km) and see the value in every unit from nanometres to light-years.
Weight ConverterConvert mass between kg, g, lb, oz, stone, US and UK tons, grains and carats with exact factors (1 lb = 0.45359237 kg). Every unit shown at once, plus lb/oz readings.
Temperature ConverterConvert between °C, °F, K and °R with the formula shown step by step (°F = °C × 9/5 + 32), a reference table from −40 to 250 °C and an absolute-zero check.
Binary, Decimal & Hex ConverterConvert whole numbers between binary, octal, decimal, hex and any base 2–36. Any size (BigInt), negatives with a two’s-complement view, and every digit’s place value.
RGB to HEX ConverterConvert colours between RGB, HEX, HSL, HSV and CMYK with a live preview. Paste #abc, rgb() or hsl(), copy every CSS syntax and get the matching CSS colour name.
Roman Numerals ConverterConvert numbers from 1 to 3999 to Roman numerals and back. Shows the symbol-by-symbol breakdown and explains malformed numerals such as IIII or IC with the correct form.
Number to WordsSpell any number up to one quadrillion in English: cardinal, ordinal, currency words and cheque style, in American or British “and” form, with decimals and negatives.
Time Zone ConverterConvert a date and time between any two time zones, with each zone’s UTC offset and daylight-saving status, plus a four-zone meeting planner for overlapping hours.
Odds ConverterConvert betting odds between decimal, fractional, American, Hong Kong, Indonesian and Malay formats, with implied probability, payout for a stake and the overround.
Shoe Size ConverterConvert men’s, women’s and kids’ shoe sizes between US, UK, EU, Japan and Mondopoint, or find your size from foot length in cm. Based on ISO/TS 19407; brands vary.
Morse Code TranslatorTranslate text to International Morse code and back – letters, digits, punctuation and prosigns – and play it as sound or a flashing light at your own speed and tone.
Tire DOT Code DecoderDecode the last four digits of a tire’s DOT code into its production week, year and age today, with the 6- and 10-year replacement guidance from NHTSA and tire makers.
3MF to STL ConverterOpen a 3MF file in your browser, rotate it in a 3D preview, see objects, triangle counts and dimensions, and download a binary STL – nothing is uploaded.
CalendarBrowse any month or year from 1900 to 2200 with ISO week numbers, a Monday or Sunday start and today highlighted. Mark your own dates and print it as a clean PDF.
Workday CalculatorCount working days between two dates or add and subtract business days, skipping weekends and your own holiday list, with a calendar, weekend and holiday breakdown.
Time Card CalculatorAdd up a week of clock-in and clock-out times with unpaid breaks and overnight shifts: totals in h:mm and decimal hours, overtime and pay estimate, CSV and print.
Pomodoro TimerFree online Pomodoro timer with 25-minute focus sessions, short and long breaks, a task list and daily stats. Exact in background tabs; optional sound and notifications.
Age CalculatorExact age in years, months and days from your date of birth, plus total days, weeks, months and hours, the weekday you were born on and a countdown to your next birthday.
Days Between Two DatesCount the days between two dates, including or excluding the end date, with the span in weeks, months and years, the weekday count, and exact hours when you add times.
How Many Days Until…Live countdown to any date in days, hours, minutes and seconds, with working days, weeks and presets for Christmas, New Year’s Eve, Valentine’s Day and Halloween.
What Day Is It? CalculatorFind the day of the week for any date from 1583 to 9999, plus its day-of-year number, ISO week, how many days away it is from today and its weekday in nearby years.
Week Number CalculatorSee the current week number with its Monday-to-Sunday dates, find the ISO week of any date, switch to US Sunday-start numbering and list every week of the year.
Leap Year CalculatorCheck whether any year is a leap year with the ÷4, ÷100 and ÷400 rule shown step by step, see the next and previous leap years and list every leap year in a range.
When Is Friday the 13th?See the next Friday the 13th and how many days away it is, every Friday the 13th in any year and a year-by-year list for a range – every year has one to three.
Moon Phase CalendarToday’s moon phase with illumination and age, the next new moon, quarters and full moon in your local time, the phase for any date and a month calendar of lunar phases.
Sunrise & Sunset CalculatorSunrise, sunset, solar noon, day length and civil, nautical and astronomical twilight for any coordinates and date (NOAA algorithm), with city presets and your location.
Online Stopwatch & TimerOnline stopwatch with lap times and a countdown timer with an alarm. Keyboard shortcuts, a full-screen display and timestamp timing that stays exact in background tabs.
Random Number GeneratorGenerate one or many random whole numbers between a minimum and maximum, with no repeats and sorting if you need them. Uses your browser’s cryptographic randomness.
Password GeneratorCreate strong random passwords of 4–128 characters or multi-word passphrases, with character sets, exclusions and an exact entropy figure in bits, all in your browser.
Password Strength CheckerTest how strong a password is: a 0–4 zxcvbn score, crack times for four attack scenarios, pattern warnings and a length checklist. Nothing leaves your browser.
QR Code GeneratorMake QR codes for links, text, Wi-Fi, email, phone numbers, SMS and contact cards. Pick size, error correction and colours; download PNG or SVG, all in your browser.
Dice RollerRoll d4, d6, d8, d10, d12, d20, d100 or custom dice, several at once with a modifier, keep-highest or drop-lowest rules, a roll history and the exact odds of each total.
Random Picker WheelType names or options one per line, add weights if you like, and spin the wheel to pick one at random. Remove winners between spins, keep a history, share by link.
Favicon GeneratorTurn a logo into a complete favicon set: multi-size favicon.ico, 16/32/48 px PNGs, Apple touch icon, Android icons, site.webmanifest and the HTML snippet in one ZIP.
Invoice GeneratorCreate a clean PDF invoice in your browser: your details, customer, items with tax rates, discount, notes and payment details. Live preview, A4 or Letter, no upload.
Padel Americano GeneratorGenerate a padel Americano draw: players, courts and rounds in, a fair schedule with changing partners out. Enter scores, see the standings, save, print or export.
Character and Word CounterCount characters with and without spaces, words, sentences and paragraphs as you type, plus reading time, keyword density and limits for X, Instagram and SMS.
Text ComparePaste two versions of a text and see every added, removed and changed word, character or line side by side or inline, with change counts, similarity and a unified diff.
Markdown EditorWrite Markdown with a live preview: headings, tables, task lists, KaTeX formulas and highlighted code. Autosaves in your browser; download as .md or .html, or print.
Markdown to WordTurn Markdown pasted from ChatGPT, Claude or any editor into a real .docx with Word headings, lists, tables, links and code blocks. Converted in your browser.
AI Prompt GeneratorWrite better prompts for ChatGPT, Claude or Gemini: fill in role, context, task, constraints, output format, examples and tone, preview the prompt live and copy it.
Emoji Copy and PasteSearch all Unicode 16.0 emoji by name or keyword, pick a skin tone and copy it with one click as a character, HTML entity or U+ code point. Recent emoji are remembered.
PDF MergerCombine two or more PDF files into one document in your browser. Reorder files, pick page ranges per file and download the merged PDF – nothing is uploaded.
PDF SplitterSplit a PDF in your browser: extract a page range into one PDF, save every page as its own file, or cut the document every N pages and download a ZIP.
PDF CompressorShrink a PDF by recompressing its images (text stays searchable) or by flattening pages to images for the smallest size. See before and after sizes before you download.
PDF EditorEdit a PDF in your browser: add text, images, boxes, lines and highlights, delete, rotate and reorder pages, then save. No upload; existing text is not editable.
Sign PDFPut your signature on a PDF in the browser: draw it, type it or upload a photo, place and resize it on any page, add the date and your name, download. No account needed.
PDF to JPG ConverterConvert PDF pages to JPG or PNG at 72–300 dpi, or pull the embedded pictures out of a PDF. Runs in your browser, previews every image and downloads a ZIP.
Image to PDF ConverterTurn JPG, PNG, WebP and other images into one PDF in your browser. Choose A4, Letter or fit-to-image pages, orientation and margins, reorder the pictures and download.
Word to PDFConvert a .docx Word document to PDF without uploading it. Headings, lists, tables and images are kept; choose selectable text or image pages, A4 or Letter, margins.
PDF to WordConvert a text PDF to an editable Word document in your browser. Paragraphs, heading styles, lists, simple tables and page breaks are rebuilt; nothing is uploaded.
PDF to ExcelExtract tables from a PDF into an editable grid and download them as Excel (.xlsx, one sheet per page) or CSV. Scanned pages are read with OCR. Runs in your browser.
PDF to MarkdownTurn a text PDF into Markdown in your browser: headings detected by font size, bullet and numbered lists, simple tables, page breaks. Copy the result or download .md.
Markdown to PDFConvert Markdown to a PDF in your browser: headings, lists, tables, code and links with real selectable text, or image pages for any script. A4/Letter, margins, sizes.
PDF WatermarkStamp a text or image watermark on every page of a PDF, or on selected pages. Set opacity, angle, size, colour and position with a live preview – all in your browser.
PDF UnlockRemove usage restrictions (no printing, copying or editing) from PDFs, and take the open password off files whose password you know. Decryption happens in your browser.
Image ResizerResize JPG, PNG and WebP images to exact pixels, a percentage or common widths in your browser. Keeps the aspect ratio and EXIF rotation; batch resize with ZIP download.
Image CropperCrop JPG, PNG and WebP images in your browser: drag the box or type exact pixels, lock a ratio such as 1:1, 4:3, 3:2 or 16:9, rotate by 90° and save as JPEG, PNG or WebP.
Image CompressorCompress photos in your browser by quality or to a target size such as under 200 KB, optionally limiting resolution. Batch compress with a per-file savings table and ZIP.
Image ConverterConvert images between JPG, PNG, WebP and BMP (AVIF where your browser supports it) and rasterise SVG at any width, all in the browser. Batch convert and download as ZIP.
HEIC to JPG ConverterConvert HEIC/HEIF photos from iPhone, iPad or Samsung to JPG in your browser: batches, quality and size options, colour profile kept, EXIF and GPS stripped, ZIP.
Image RotatorRotate photos by 90, 180, 270 or any angle and flip them horizontally or vertically with a live preview. Pick the background for tilted images; batch rotate with ZIP.
EXIF ViewerRead the hidden metadata in a photo: camera, lens, aperture, shutter speed, ISO, capture date, software and GPS location with a map link. Full tag table, copy as JSON.
EXIF RemoverSee which metadata a photo carries (EXIF, GPS, XMP, IPTC, comments) and download a copy without it. Re-encodes JPG, PNG and WebP in your browser and verifies the output.
GIF MakerMake an animated GIF from JPG, PNG or WebP images in your browser: delay per frame, frame order, size, loop count, palette size and an optional transparent background.
Photo Collage MakerPhoto collage in your browser: 17 grid and scatter layouts, gap, border and rounded corners, zoom and pan per cell, PNG or JPG export at Instagram, print or custom sizes.
Image to Text (OCR)Extract text from a photo, screenshot or scan in your browser. Tesseract OCR in eight languages, paste with Ctrl+V, edit the result, copy it or download a .txt file.
Game Screenshot OCRExtract text from game screenshots in your browser: crop, upscale, invert and threshold HUDs and pixel fonts, then copy or export TXT/JSON with word boxes and confidence.
Background RemoverRemove the background from a portrait or product photo with the MODNet AI model in your browser. Transparent PNG or a solid colour, before/after slider, no upload.
PNG to SVG ConverterTurn a PNG or JPG logo, icon or line drawing into real SVG vector paths in your browser: black-and-white or posterised colour, adjustable threshold and detail.
Pixel Art ConverterTurn any photo into pixel art in your browser: set the pixel size, pick from 20+ retro palettes (Game Boy, NES, C64, PICO-8), add dithering and outlines, export PNG.
Retro Sprite Sheet GeneratorSlice images into frames, reduce colours with real NES, C64, Game Boy and ZX Spectrum limits, preview the animation and export a PNG sheet, frames ZIP, JSON and CSS.
Video TrimmerCut a section out of an MP4, MOV or WebM in your browser: set start and end on a timeline or type exact times; keep the original quality or re-encode for an exact cut.
Video CompressorShrink a video in your browser: pick a quality level or a target size in MB, lower the resolution, keep or drop the audio and download the H.264 MP4. Nothing is uploaded.
Video to GIF ConverterTurn part of a video into an animated GIF in your browser: set the range, frame rate, width, speed, reverse or boomerang, quality and loop count, with a two-pass palette.
Video to MP3 ConverterPull the audio track out of a video and save it as MP3 in your browser: LAME VBR or a fixed bitrate up to 320 kbps, optionally just a part of it. Nothing is uploaded.
Audio ConverterConvert audio between MP3, AAC (M4A), OGG Vorbis, Opus, WAV and FLAC in your browser, several files at once, with a bitrate choice for lossy formats. Nothing is uploaded.
Audio Cutter & JoinerCut a section out of an MP3, WAV, M4A, OGG or FLAC on a waveform, add fades and volume, join several clips in any order and export WAV or MP3 — all in your browser.
SudokuPlay Sudoku online: four levels, every puzzle has exactly one solution. Pencil marks, hints, check, undo, keyboard input, timer and best times saved in your browser.
MinesweeperClassic Minesweeper in the browser: Beginner, Intermediate, Expert or a custom board. Safe first click, flags, chording, keyboard play and best times saved locally.
SolitairePlay Klondike (draw 1 or 3), FreeCell and Spider solitaire (1, 2 or 4 suits) free in your browser: drag or tap cards, undo, hints, auto-complete, timer and records.
Mahjong SolitairePlay Mahjong Solitaire online: six layouts including the classic 144-tile turtle, a daily challenge, hints, undo and reshuffle. Every deal is generated solvable.
2048Play 2048 online: slide tiles with the arrow keys, WASD or a swipe, merge equal numbers and reach 2048. Undo, move counter and best score saved in your browser.
Reaction Time TestClick or press Space when the box turns green. Five trials give your average, best and median reaction time in ms against the typical 250 ms, with false-start detection.
Typing Speed TestType random words or a short passage for 30, 60 or 120 s and get gross and net WPM, accuracy and error highlighting. Last 10 runs and best score kept in your browser.
Aim TrainerAim trainer in your browser: flick, tracking, reaction and target-switching drills, adjustable targets, local score history and a coach that names your weak spot.
Chess Screenshot AnalyzerUpload a chessboard screenshot, get the position as FEN with an editor to fix any square, and analyse it with Stockfish in your browser: eval, best move and lines.
Minecraft Skin EditorFree online Minecraft skin editor: paint 64×64 skins pixel by pixel on a live 3D model, classic or slim arms, both layers, palette and shading tools, PNG in and out.
Minecraft Pixel Art Blueprint MakerTurn any image into a Minecraft block plan: crop, set the size in blocks, pick the blocks, preview it and download a numbered blueprint, materials list and build steps.
Steam Library AnalyzerAnalyze your Steam library in the browser: total and median playtime, most-played games, the unplayed backlog, a random pick and CSV/JSON export. Nothing is uploaded.
ASCII Code TableSearchable ASCII table: all 128 codes with decimal, hex, octal, binary, HTML entity and name, plus extended 128–255 (Windows-1252 / ISO-8859-1) and a text converter.
HTML Color CodesAll 148 CSS colour names with hex, RGB and HSL values, a picker that shows hex, RGB, HSL, HSV and CMYK, shades and tints, and a WCAG contrast checker.
Resistor Color Code CalculatorDecode 4-, 5- and 6-band resistor colours into ohms, tolerance and temperature coefficient, or enter a value to get the bands of the nearest E6–E96 part. SMD codes too.
Mic TestTest your microphone in the browser: live level meter in dB, waveform, peak hold, input device picker and an optional 5-second playback check. Nothing is uploaded.
Online MirrorTurn your webcam or phone camera into a mirror in the browser: flip the image, freeze a frame, switch cameras, go fullscreen and save a snapshot. Nothing is uploaded.
Gamepad TesterTest an Xbox, PlayStation or any USB/Bluetooth controller in your browser: live button, trigger and stick readings, an adjustable deadzone and a 3-second drift test.
Gamepad Response VisualizerWatch your controller’s sticks live with trails, simulate radial, axial and scaled deadzones and response curves, run a circularity test and export the results as JSON.
Mouse Polling Rate & DPI TesterEstimate your mouse’s polling rate from browser pointer events (interval histogram, jitter, 125–8000 Hz markers) and its DPI from a measured 10 cm move.