Unit & Currency Converters

Convert numbers between Binary, Decimal, Octal, and Hexadecimal instantly. All four results shown simultaneously with copy buttons.

Convert colors between HEX, RGB, and HSL formats with a live swatch and color picker. Instantly copy CSS-ready color values for your projects.

Real-time currency exchange rate converter. Supports major world currencies.

View live exchange rate history for any currency pair with an interactive sparkline chart. Choose 7, 14, 30, or 90-day range. Powered by ECB data.

Convert between Bits, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, and Petabytes. All conversions shown simultaneously.

Estimate image file size in KB or MB based on dimensions, colour depth, and format (JPEG/PNG/WebP/RAW). Great for web performance planning.

Convert any number to its English word form for cheques, legal documents, or writing. Supports cardinal and ordinal (First, Second…) modes up to trillions.

Convert numbers to Roman numerals and Roman numerals back to numbers. Includes a step-by-step breakdown of the conversion process. Supports 1 to 3999.

Convert temperatures between Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, and Réaumur with quick reference shortcuts for common values.

Convert any text to binary code or decode binary back to readable text. Supports ASCII and Unicode. Choose space, newline, or no separator.

Convert the current time or any date/time between 30 world time zones. Live clock included. Perfect for scheduling international meetings.

Convert between common units of length, weight, temperature, and digital storage.