Unit converter
Convert between metric and imperial units in one place.
Free No sign-up Runs in your browser
How it works
How to use the Unit Converter tool
- 1
Pick a measurement
Length, weight, temperature, volume and more.
- 2
Choose units
From and to — swap with one click.
- 3
Read the result
Plus a table in every unit.
Exact factors
Conversions use exact international definitions — for example 1 inch = 2.54 cm and 1 pound = 0.45359237 kg — and temperature uses the precise formulas, not rounded factors.
kB vs KiB
Storage manufacturers use decimal units (1 GB = 1,000,000,000 bytes) while operating systems often use binary units (1 GiB = 1,073,741,824 bytes). That’s why a “1 TB” drive shows about 931 GB in Windows.
Limitations
We’d rather be upfront about what this tool can’t do yet:
- US and UK gallons differ — both are listed.
FAQ
Frequently asked questions
Is my data sent anywhere?
No. All processing happens locally in your browser. Nothing you enter is uploaded, stored or logged.
How many cm in an inch?
Exactly 2.54 cm.
How do I convert °C to °F?
°F = °C × 9/5 + 32.
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