Step by step
- Open this page in your browser.
- Choose the category and units.
- Bookmark it for next time.
At a glance
| Option | Install? | Note |
|---|---|---|
| This page | No | All categories, every unit at once |
| Windows Calculator | Built in | Menu › Converter modes |
| Mac Spotlight | Built in | Type "5 ft in cm" |
| iPhone Calculator | Built in (iOS 18+) | Tap the calculator icon › Convert |
Related questions
Does it work offline?
Once loaded, the conversion runs on your device.
Is it free?
Yes, with no sign-up.
Can I use it at work where installs are blocked?
Yes, it only needs a browser.
More questions: unit converter
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Open the full unit converter →
Updated November 14, 2026.