Number Base Converter: a practical guide

Number Base Converter is worth a bookmark if the job comes up more than once. Convert bin/oct/dec/hex locally with BigInt. Below: the situations where it fits, a short workflow that avoids rework, and the mistakes that most often produce a confusing result.

When Number Base Converter is the right tool

Conversions usually interrupt another task, so the goal is an unambiguous answer with the units spelled out.

• Convert memory addresses and bitmask constants.
• Check homework answers for radix conversion.
• Translate color channel values between dec and hex.
• Debug embedded firmware register values.

Getting a reliable result

Select units by name instead of relying on a remembered factor, then round the result to the precision your source measurement actually justified. Where a unit has regional variants, confirm which one the destination document expects before copying the number across.

• Match the source base to how your input is written.
• Include 0x or 0b prefixes only when unambiguous.
• Use decimal for human-readable magnitudes, hex for bitwise work.

Mistakes that waste time

• Entering letters in decimal mode.
• Using 8 or 9 in octal input.
• Assuming leading zeros change the numeric value.
• Mixing bases without updating the source base dropdown.

Privacy and local processing

Every conversion is computed locally in the page, so figures pulled from private documents never leave your device.

Related tools and reading

Open Number Base Converter to try it with your own input. Nearby utilities include Roman Numeral Converter and Speed Unit Converter. For background, read Unit conversion without the rounding traps, and browse the Unit Converters collection for the rest of the cluster.