Number Base Conversion Calculator

Convert numbers between any bases. Enter a number and its base on one side, and the target base on the other. Works reliably up to base 36. For more practice, try the tutorial on converting decimal to base b.

Base B₁

Number:

Base:

Base 10 (Decimal)

Number:

Base:

Base B₂

Number:

Base:

How it works: Enter a number in Base B₁ with its base, and specify Base B₂. The tool converts through decimal (base 10) as an intermediate step, so you can see all three representations at once.

If you would like more practice with number base conversions, try the tutorial on converting from decimal to base b.