🔢Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal
Frequently Asked Questions
Why convert between number bases?▼
Different number bases are used in computing: binary for machine-level operations, octal for file permissions, decimal for human readability, and hexadecimal for memory addresses and colors.
Is this tool free to use?▼
Yes, all tools on Testrefy are completely free to use with no registration required. No hidden fees or premium tiers.
Do you store my data?▼
No. All processing happens in your browser locally. We never send, store, or share your data on our servers.