Does it work with big numbers?

Yes. The conversion uses arbitrary-precision math, so numbers with hundreds of digits convert without rounding errors.

Can I paste numbers with a prefix, like 0x1F or 0b1010?

Yes. The 0x, 0b and 0o prefixes are accepted in the hexadecimal, binary and octal fields. Spaces between digits are ignored too.

Paste a hexadecimal number, with or without 0x, and see its value in decimal, binary and octal.

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Convert hexadecimal numbers to decimal instantly. Accepts the 0x prefix and numbers of any size. Free and in your browser.

Does it work with big numbers?: Yes. The conversion uses arbitrary-precision math, so numbers with hundreds of digits convert without rounding errors.
Can I paste numbers with a prefix, like 0x1F or 0b1010?: Yes. The 0x, 0b and 0o prefixes are accepted in the hexadecimal, binary and octal fields. Spaces between digits are ignored too.