Number Base Converter
Convert numbers between binary, octal, decimal, hexadecimal, and any base from 2 to 36 with instant visual feedback.
6 Common Bases Bit Visualization Custom Base (2–36) Real-time Conversion 100% Private
Valid number
= 255 (decimal) Bit Visualization8-bit
1
1
1
1
1
1
1
1
bit 7–0
Quick Samples
BinaryBase 2
0b11111111
OctalBase 8
0o377
DecimalBase 10
255
HexadecimalBase 16
0xFF
Base 32Base 32
7V
Base 36Base 36
73
Custom Base Conversion
(2–36)
513
Number Base Converter Features
Powerful number system conversion with visual bit-level analysis.
6 Common Bases
Convert between binary, octal, decimal, hexadecimal, base-32, and base-36 simultaneously.
Bit Visualization
See individual bits highlighted in a visual grid for numbers up to 32-bit.
Custom Base (2–36)
Convert to any number base from 2 to 36 using a custom converter.
Real-time Conversion
All conversions update instantly as you type — no button clicks needed.
100% Private
All calculations happen locally in your browser. No data is ever sent to a server.
Frequently Asked Questions
Find answers to the most common questions.