Converters & Units

11 tools in this category

Convert between units of length, weight, temperature, area, volume, speed, and number formats (binary, hex, Roman numerals).

Convert between 30+ currencies using live exchange rates. Free, no sign-up required.

Convert between metres, kilometres, miles, feet, inches, and more.

Convert between kilograms, pounds, ounces, and grams.

Convert between Celsius, Fahrenheit, and Kelvin.

Convert between square metres, square feet, acres, hectares, and more.

Convert between litres, gallons, cubic feet, and more.

Convert between km/h, mph, m/s, knots, and more.

Convert numbers between binary, decimal, and hexadecimal.

Convert between Roman numerals and decimal numbers.

Convert moles, molarity, concentration, and other science units. Free online unit converter for chemistry and physics.

Convert images between PNG, JPEG, and WebP formats. Free online image converter. No upload to server—runs in browser.