Number Base Converter
Convert numbers between binary, octal, decimal, and hex.
Low-level programming, debugging, networking, and computer science coursework constantly require converting numbers between binary, octal, decimal, and hexadecimal representations. Utilitoo's Number Base Converter handles these conversions instantly so you can verify bit patterns, decode color values, or check memory addresses without mental math.
Embedded developers converting register values, security researchers reading hex dumps, students studying number systems, and web developers translating color codes all reach for a reliable base converter daily.
Enter a number, select source and target bases, and click Convert. Signed integers are supported. Pair with Text to Binary for character-level encoding, Base64 Encode/Decode for transport encoding, or Timestamp Converter when working with Unix epoch values in hex.
All conversion runs locally in your browser on Utilitoo. Your input is never uploaded or stored. Free, instant, and privacy-first for developers, students, and engineers working with numeric representations.
Number Base Converter covers a focused developer utility: Convert numbers between binary, octal, decimal, and hex. Browser execution means less context switching than installing a one-off CLI for a single paste.
Common use cases
- Turning messy number base converter data into something readable during a live debugging session.
- Sanity-checking exports from databases, queues, or SaaS admin panels with Number Base Converter.
- Building fixtures and examples for docs or tests from real number base converter samples.
- Avoiding a full IDE or CLI install when you only need a one-off number base converter transform.
- Reproducing a reported bug by pasting the exact number base converter payload the user shared.
Tips & common mistakes
Use Number Base Converter when you need a fast browser-side check: Convert numbers between binary, octal, decimal, and hex. Prefer plain-text pastes over rich HTML from email clients. For production-bound transforms, validate on a staging copy first. Large inputs can slow a tab - split multi-megabyte blobs when the UI feels sluggish.
Common errors
- Unexpected output from Number Base Converter - double-check input format, encoding, and whether the paste was truncated.
- Browser limits - very large inputs may slow the tab; split into smaller chunks if performance drops.
How to use
- Enter a number.
- Choose source and target bases.
- Click Convert.
Frequently Asked Questions
How do I convert hex to decimal online?▼
Enter your hex value, select Hex as the source base and Decimal as the target, then click Convert in Utilitoo.
Which number bases are supported?▼
Binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16).
Are negative numbers supported?▼
Yes. Prefix negative values with a minus sign and Utilitoo converts the signed integer correctly.
Can I convert fractional numbers?▼
This tool converts whole integers only. Use a calculator for fractional base conversions.
Is conversion done locally?▼
Yes. All number base conversion runs in your browser on Utilitoo.
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