UD5 Toolkit
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.
Tag: Speed Converter - mph, km/h, knots
12+ toolsConnection Speed Estimator - Online Download Test
Quickly estimate your internet connection speed by downloading a small test file. See class and recommendations.
GIF Speed Changer – Online Slow Down or Speed Up
Load a GIF and adjust playback speed. Save modified GIF. Pure client-side processing.
Hole Saw Speed & Feed Calculator – Online Diameter & Material
Enter hole saw diameter and material to find the recommended RPM and feed pressure. Prevent burning and kickback.
Video Speed Controller - Online Slow Motion & Timelapse
Play any video at 0.25x to 4x speed. Save the modified speed as a new file. Perfect for analysis or fun.
Network Information API Checker - Online Downlink Speed
Display your effective connection type (4g, 3g, etc.) and downlink speed using the Navigator API. Adapt your app accordingly.
Bandwidth & Download Time Calculator - Online
Estimate how long it takes to download/upload a file given bandwidth speed. Also convert between bits and bytes.
GIF Playback Speed Changer - Online Slow Down or Speed Up
Load an animated GIF and adjust its frame delay to make it slower or faster. Download the modified GIF. All local.
Whack-a-Mole - Online Reaction & Speed Game
Hit the popping moles as fast as you can before they disappear. Increasing difficulty. Great for hand‑eye coordination. Browser only.
Typing Speed Test - Online WPM & Accuracy Checker
Measure your typing speed in words per minute and accuracy. Random word prompts. Compare results over time. No data sent.
Video Speed Controller - Online Slow Motion & Timelapse
Play any video at a custom rate (0.25x to 4x) without audio pitch change. Save the playback speed as a link. Local.
Speed Converter - Online mph km/h & Knots Calculator
Convert speed units such as miles per hour, kilometers per hour, knots, and meters per second. Accurate and quick, works offline in your browser.