select source and destination base using the elements below, paste the text convert into one of the boxes and then click one of the buttons conversion buttons (↓↓↓ or ↑↑↑)

Notes

• supports negative numbers
• supports positive whole number bases, negative whole number bases, and base 1
• wrap a digit in parens to define its exact value, e.g. 2(-1)(10) in base 10 would mean 2 * 100 + -1 * 10 + 10 * 1
• technically supports fractional bases, but these are typically nonsense, cannot represent every number exactly, and inaccurate due to floating point rounding errors

See Also