CSS unit converter New
Convert CSS units: px to rem, em, pt, pc, cm, mm and inches and back, with an adjustable root font size.
Binary, octal, decimal and hex converter
Convert a number from one base to another, such as hexadecimal to binary. Very large numbers stay exact.
Runs in your browser. Nothing is uploaded.
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How to use the number base converter
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Type a number in the field of its base.
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Read it in all the other bases at once.
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Use the custom base for anything from base 2 to base 36.
Frequently asked questions
Which digits are used above base 10?
The letters a to z follow the digits 0 to 9, so base 16 uses 0-9 and a-f, and base 36 uses every letter.
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