Numbers & units FREE CALCULATOR
Unit converter
Convert common lengths, weights and temperatures without a lookup table.
Your numbers
Example values are filled in. Change them to suit you.
⌁ Your entries are calculated in this browser.
Your result
Ready when you are.
Enter your numbers and select Calculate to see the breakdown.
Negative values are accepted for temperature, but not for physical lengths or weights. Temperature must be at or above absolute zero.
How it works
1 mile = 1.609344 km; 1 pound = 0.45359237 kg; 1 inch = 2.54 cm. Fahrenheit = Celsius × 9/5 + 32; Celsius = (Fahrenheit − 32) × 5/9.
A quick example
10 miles = 16.09344 km. 20°C = 68°F.
Good to know
How precise are the conversions?
The defined conversion factors are used internally. Results are rounded to at most five decimal places.
Are ounces included?
No. This tool covers the listed units; it does not mix fluid ounces with weight ounces.