Base Converter
Convert numbers between decimal, hexadecimal, binary, octal, and arbitrary bases from 2 through 64 without doing the translation by hand.
Best For
Use Base Converter when you need to work through practical calculations without setting up a spreadsheet. The page is designed around a focused workflow: bring in the numbers, dates, units, or expressions you need to evaluate, make the adjustment or check, then copy the result into your plan, estimate, assignment, or documentation.
Most work happens locally in your browser, which keeps files and text on your device and makes quick repeat checks practical. Review the output, then copy the result into your plan, estimate, assignment, or documentation.
Common workflows
- Binary Classroom Lessons
- Hex Color Checks
- Electronics Hobby Projects
- Retro Computing Codes
Features
Common Programming Bases
Work with decimal, hex, binary, octal, and custom base 2 through 64 values used in code, hardware, and debugging.
Immediate Translation
Enter a value once and see the equivalent output in the other supported bases.
BigInt Validation Included
Catch invalid digits quickly and convert large integers without JavaScript number precision loss in custom-base mode.
How It Works
Start with decimal, hex, binary, octal, or a custom source base from 2 through 64.
Paste the number you want to convert and let the tool validate it.
Copy the result into your code, notes, or debugging context.