Ounces to grams, square metres to square feet, pixels to rem. Each converter uses the real formula and shows the exact figure, so you do not have to trust your head at the shop or in a stylesheet.
- Length ConverterConvert between metric and imperial length units.
- Weight ConverterConvert between kilograms, pounds, and more.
- Temperature ConverterConvert between Celsius, Fahrenheit, and Kelvin.
- Area ConverterConvert between square meters, feet, acres, and more.
- Pixel to EM ConverterConvert pixel values to em and rem units.
- Speed ConverterConvert between km/h, mph, m/s, knots, and Mach.
- Volume ConverterConvert litres, gallons, cups, tablespoons, cubic metres, and more.
- Time Unit ConverterConvert between seconds, minutes, hours, days, weeks, months, and years.
- Pressure ConverterConvert psi, bar, kPa, atm, and mmHg.
- Energy ConverterConvert joules, calories, kilowatt-hours, BTU, and more.
- Power ConverterConvert watts, kilowatts, horsepower, and BTU per hour.
- Angle ConverterConvert degrees, radians, gradians, and turns.
- Data Transfer Rate ConverterConvert Mbps to MB/s and between every bit and byte rate.
- Fuel Economy ConverterConvert MPG (US and UK), km/L, and L/100 km.
- Number Base ConverterConvert numbers between binary, octal, decimal, hex, and any base up to 36.
- Roman Numeral ConverterConvert numbers to Roman numerals and back, with validation.
- Cooking Measurement ConverterConvert cups, tablespoons, grams, and ounces, with ingredient-aware weights.
- Shoe Size ConverterConvert shoe sizes between US, UK, EU, and foot length.
- Aspect Ratio CalculatorFind the aspect ratio of any size and scale it to a new width or height.
- ASCII & Unicode ConverterConvert text to character codes and codes back to text.