Number Base Converter
Binary, decimal, hexadecimal, and any custom base in seconds.
Base 10
10
Quick conversions
Base 8
12
Base 10
10
Base 16
A
Perfect for developers and students
Paste any value, choose the source base, and get instant conversions to your target base plus quick snapshots for binary, octal, decimal, and hex. The tool validates your input so you avoid subtle digit mistakes.
When to use it
- Debugging binary or hexadecimal values in embedded projects.
- Solving computer science homework involving different radix systems.
- Converting numeric identifiers for APIs or database lookups.
Accuracy guarantees
All math runs using JavaScript BigInt to handle large values without losing precision. If the input contains invalid digits for the chosen base, we flag it before converting.
Sample conversions
- Binary 1101
- Decimal 13 - Hex D
- Hex FF
- Decimal 255 - Binary 11111111
- Base 36 Z1
- Decimal 1261
Related tools
- Need to generate random credentials? Try the Password Generator.
- Formatting JSON payloads? The upcoming JSON Formatter will help.
FAQ
Does it support fractional numbers? Not yet. For now, convert integers; fractional support is on the roadmap.
Can I copy multiple outputs at once? Use the quick conversion cards to copy whichever base you need with a single tap.