Unit Converter
Convert between units of length, weight, temperature, area, volume, speed, data storage, and time instantly. This free online unit converter runs entirely in your browser with no sign up or login required.
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All Conversions
| Unit | Value |
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How to Use
1
Select a category (Length, Weight, Temperature, etc.) from the tabs above.
2
Choose the source unit from the "From" dropdown on the left.
3
Choose the target unit from the "To" dropdown on the right.
4
Enter a number in either input field — the other updates instantly.
5
View all conversions in the table below, or star your favorite pairs.
Frequently Asked Questions
How accurate are the conversions?
All conversions use standard, widely accepted conversion factors. For temperature, proper formulas (not simple multiplication) are used. Results are displayed up to 10 significant digits.
Can I use this offline?
Yes! Once the page loads, all conversions happen in your browser with no server requests. You can save the page for offline use.
How do I save favorite conversions?
Click the star icon on the conversion card. Your favorites are saved in your browser's localStorage and persist between sessions.
What unit categories are supported?
We support 8 categories: Length, Weight, Temperature, Area, Volume, Speed, Data Storage, and Time — covering over 50 individual units.
Why does temperature conversion differ from others?
Temperature uses formulas (e.g., °F = °C × 9/5 + 32) rather than simple multiplication factors, because temperature scales have different zero points.