Unit converter
Convert between metric and imperial units without a search engine guessing what you meant. Length, mass, volume, area, speed, data size and temperature — all computed in your browser.
Everything runs in your browser — nothing is sent anywhere
How to use
- 1
Pick the kind of quantity you are converting.
- 2
Type the value and choose the units on both sides.
- 3
Copy the result, or hit swap to convert the other way.
FAQ
Which units are supported?
Length (mm to miles and nautical miles), mass, volume including US cups and fluid ounces, area including acres and hectares, speed, data size and temperature.
What is the difference between MB and MiB?
MB is 1,000,000 bytes, MiB is 1,048,576. Storage is sold in MB, operating systems usually count in MiB — which is why a “500 GB” drive shows as 465 GiB.
Are the results exact?
Yes. The factors are the official definitions (an inch is exactly 25.4 mm), and results are rounded only for display.
Does it convert currency?
No. Exchange rates change by the minute and would need a live source; everything here works offline.
Is anything sent to a server?
No. The arithmetic happens in your browser.