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Number Base Converter
Instantly convert numbers between binary, octal, decimal, and hexadecimal bases. Just pick the base of your input, type the number, and see all equivalent representations at once. Perfect for debugging, learning numeral systems, or verifying manual conversions.
🔒 File processing runs locally in your browserFree to start · No sign-up required
How to Use
- 1Enter the number you want to convert in the input field.
- 2Choose the base of your input from the dropdown (binary, octal, decimal, or hexadecimal).
- 3Read the converted values for all other bases. Click the copy button next to any result to save it to your clipboard.
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Private by Design
File-processing tools keep your files in the browser.
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Instant Results
Processing happens locally — no waiting for uploads.
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Free to Start
No account needed for the free tier. Limits are shown where they apply.
Frequently Asked Questions
Can I convert fractional or decimal numbers?
No, only integer numbers are supported. If you enter a decimal point or fraction, the tool will show an error.
What about hexadecimal letters?
You can use uppercase or lowercase letters A–F; both are accepted.
What happens if I type a digit that doesn’t belong to the selected base?
The tool checks the input immediately and displays an error telling you which characters are invalid for that base.
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