Unit Converter
Length, mass, temperature, and more.
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Pick a dimension, type a number, and read the other units. Factors are standard SI conversions, not lab-certified instruments.
How to use this tool
- Enter the source value. Type the number, color, or timestamp you want to convert.
- Pick the target unit. Choose the output system. Conversion runs locally.
- Copy the converted value. Use Copy when you need the result elsewhere.
Temperature
Celsius, Fahrenheit, and Kelvin use the usual affine formulas. Other groups are linear scale factors from SI.
Frequently asked
Are cooking cups US or metric?
The volume group labels US cups and metric cups separately.
Can I convert stone and pounds?
Yes, in the mass group.
Is a nautical mile included?
Yes, under length.
How many decimals are shown?
Enough to be useful. Copy the raw number if you need more places.
Is this legal for trade?
No. It is a convenience calculator.