What it is
CalcPark started in 2022 as a collection of small online calculators and converters. In 2026 it was rebuilt from the ground up: every tool was reviewed, the formulas were checked against their sources, and the whole site now runs as static pages with the work done in your browser.
How the tools work
Calculators run entirely on your device. File tools (PDF, image, video and audio) open and process files locally with JavaScript and WebAssembly, then let you save the result - the file itself is never uploaded to CalcPark. A few tools download their processing engine (for example FFmpeg or an OCR model) from a public CDN the first time you use them; the page says so where it applies.
Accuracy
Each calculator page shows the formula or method it uses, the assumptions behind it and its limits, plus a worked example. Health and finance results are estimates for information only - they are not medical, legal or financial advice.
Missing something?
If a tool you relied on is gone, or you have an idea for a new one, tell us.