ZeroData Tools
Tools
JSON Formatter Format and validate JSON instantly with no uploads, no server calls, and no stored data. JSON Validator Validate JSON instantly before deploys with local processing and zero server calls. YAML Validator Validate YAML files and catch indentation errors instantly with no uploads or backend processing. Base64 Encoder Encode or decode Base64 strings instantly with zero uploads. URL Encoder Encode and decode query parameters locally for APIs, redirects, and forms. HTML Formatter Pretty-print messy markup and inspect structure without exposing page code. CSS Minifier Shrink stylesheets for production with browser-only processing and instant output. JavaScript Beautifier Reformat dense JavaScript into readable code locally for debugging.

Number Base Converter

Convert numbers between binary, octal, decimal, and hexadecimal bases instantly in your browser.

Advertisement
Number Base Converter
Convert between binary, octal, decimal, and hexadecimal in real time.
Real-time conversionZero uploads
InputType a number
ConversionsAll bases
Binary (Base 2)—
Octal (Base 8)—
Decimal (Base 10)—
Hexadecimal (Base 16)—
ReadyBrowser only
Enter a number and select its base to convert.

How ZeroData protects your privacy

  • ✓ No Uploads: Processing happens entirely via client-side JavaScript.
  • ✓ No Storage: We do not have a database. We physically cannot save your data.
  • ✓ No Tracking: We don't log what you process or track your inputs.
  • ✓ Verifiable: Check your DevTools Network tab. You will see 0 outbound requests.

How to Use the Number Base Converter

  1. Select the base of your input number (binary, octal, decimal, or hex).
  2. Type or paste your number into the input field.
  3. View real-time conversions to all other bases.
  4. Click any output value to copy it to your clipboard.
Advertisement

Frequently Asked Questions

Does it support large numbers?

The tool supports numbers within JavaScript's safe integer range (up to 2^53 - 1). For most programming tasks, this is more than sufficient.

Can I convert from hex to binary directly?

Yes. Select 'Hexadecimal' as your input base, type your hex value, and the binary output updates instantly.

Is the conversion performed locally?

Yes. All conversions happen locally in your browser with zero server calls.

Explore more ZeroData utilities

Related Tools

Base64 Encoder

Encode or decode Base64 strings instantly with zero uploads.

Timestamp Converter

Convert Unix timestamps to readable dates and back with zero data upload.

HEX to RGB

Translate color values between HEX and RGB instantly for design handoff.

© 2026 ZeroData Tools. All rights reserved.