Programming calculators
Encoders, converters and developer utilities.
ASCII Converter
Convert text to ASCII character codes.
Base64 Encoder / Decoder
Encode text to Base64 or decode it back.
Binary Converter
Convert decimal numbers to binary and back.
Decimal Converter
Convert a number between any two bases (2–36).
File Transfer Time Calculator
How long a download or upload will take.
Hash Generator
Fast non-cryptographic checksum for any string.
Hex Converter
Convert hexadecimal values to decimal and binary.
Hex to RGB Converter
Convert a hex colour into RGB and HSL.
JSON Formatter
Validate and pretty-print JSON instantly.
Lorem Ipsum Generator
Placeholder text for mockups and layouts.
Random Number Generator
Generate random numbers in a range.
Regex Tester
Test a regular expression against sample text.
Subnet Mask Calculator
Mask, host count and wildcard from a CIDR prefix.
Text Case Converter
Convert text between common naming cases.
URL Encoder / Decoder
Percent-encode or decode a URL string.
URL Slug Generator
Turn any title into a clean URL slug.
UUID Generator
Generate an RFC-4122 version 4 UUID.