Free Binary, Hex & Decimal Converter
Type a number in any base — binary, octal, decimal or hex — and see it in all the others instantly.
- 100% free
- No limits
- No upload
- No watermark
- Works on mobile
How to use the Binary, Hex & Decimal Converter
- 1
Type a number
Enter it in any of the boxes.
- 2
Read the others
All bases update as you type.
Why use Qu-Outil's Binary, Hex & Decimal Converter
Fast, private and free — with no limits.
Big numbers
Uses BigInt, so very long numbers convert exactly.
Instant and private
Everything happens in your browser as you type. Your text is never sent to a server.
Free and unlimited
No sign-up, no limits and no ads in the way. Use it as often as you like.
Works on any device
Fully responsive — works the same on a phone, tablet or computer.
Binary, Hex & Decimal Converter — frequently asked questions
Can I enter 0x or 0b prefixes?
Yes — prefixes and spaces are ignored.
Is it free?
Yes — free with no sign-up and no limits.
Is my text stored or uploaded?
No. Everything runs in your browser; nothing you type is sent to a server or saved.
Help keep Qu-Outil free
I build and run these tools in my free time and keep them free for everyone — no ads, no sign-up. If they helped you, buy me a chai or coffee via Google Pay or any UPI app. Your support keeps me building more free tools. Completely optional.
samarthdalela@oksbiThe button opens Google Pay, PhonePe or Paytm on your phone. On desktop, scan the QR.
Scan to pay ₹50
Works with any UPI app