JS Tools

Numbers Tools

Free online Numbers tools to format, validate, convert and debug Numbers data in your browser. No sign‑up, fast and privacy‑friendly.

All Numbers Converter
Convert between binary, octal, decimal and hex instantly with accurate results.
Decimal to Binary
Convert decimal numbers to binary with clean output and large‑value support.
Decimal to Octal
Convert decimal numbers to octal quickly with precise, readable output.
Binary to Decimal
Convert binary values to decimal with validation and clear formatting.
Binary to Hex
Convert binary strings to hexadecimal with grouping for readability.
Binary to Octal
Convert binary to octal using precise 3‑bit grouping conversion.
Hex to Decimal
Convert hexadecimal strings to decimal integers with error checks.
Hex to Binary
Convert hex strings to binary bits with spacing options for readability.
Hex to Octal
Convert hexadecimal numbers to octal with exact base mapping.
Octal to Decimal
Convert octal values to decimal with validation and clean formatting.
Octal to Binary
Convert octal to binary using exact 3‑bit expansion per digit.
Octal to Hex
Convert octal values to hexadecimal with exact base conversion.
Binary to Text
Decode binary byte strings to readable UTF‑8 text safely.
Text to Binary
Encode text to binary byte strings with proper UTF‑8 handling.
ASCII to Text
Convert ASCII code points (decimal/hex) into readable text quickly.
Char to ASCII
Find the ASCII code for any character; shows decimal and hex values.
Reverse Hex
Reverse endianness by swapping byte order in any hex string.
Credit Card Validator
Validate cards with Luhn and pattern checks.
Base Converter
Convert between binary, octal, decimal, and hex with instant results.