Speed Distance Time Calculator - Online SDT Formula Tool
Enter any two variables (speed, distance, time) and get the third. Supports mph, km/h, m/s and multiple units. Practical for runners and drivers.
UD5 Toolkit
Enter any two variables (speed, distance, time) and get the third. Supports mph, km/h, m/s and multiple units. Practical for runners and drivers.
Enter hole saw diameter and material to find the recommended RPM and feed pressure. Prevent burning and kickback.
Play any video at 0.25x to 4x speed. Save the modified speed as a new file. Perfect for analysis or fun.
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
Display your effective connection type (4g, 3g, etc.) and downlink speed using the Navigator API. Adapt your app accordingly.
Load an animated GIF and adjust its frame delay to make it slower or faster. Download the modified GIF. All local.
Estimate how long it takes to download/upload a file given bandwidth speed. Also convert between bits and bytes.
Play any video at a custom rate (0.25x to 4x) without audio pitch change. Save the playback speed as a link. Local.
Hit the popping moles as fast as you can before they disappear. Increasing difficulty. Great for hand‑eye coordination. Browser only.
Measure your typing speed in words per minute and accuracy. Random word prompts. Compare results over time. No data sent.
Convert speed units such as miles per hour, kilometers per hour, knots, and meters per second. Accurate and quick, works offline in your browser.