Unit converter
Convert units online for length, weight, temperature, volume, speed, area, and more.
Free web browser tools
Unit Converter
Move quickly between everyday units and formats with focused converters for measurements, temperatures, speeds, volumes, numbers, and time zones.
cm to inches
Convert centimeters to inches instantly with a simple online cm to inches calculator.
kg to lbs
Convert kilograms to pounds instantly with a free online kg to lbs calculator and conversion table.
Celsius to Fahrenheit
Convert Celsius to Fahrenheit instantly with a free temperature converter and formula.
Inches to cm
Convert inches to centimeters instantly with a simple free online converter and conversion table.
mph to km/h
Convert miles per hour to kilometres per hour instantly with a simple speed converter.
Time zone converter
Convert times between time zones and compare cities with a simple online time zone converter.
ml / oz volume converter
Convert milliliters to fluid ounces and ounces to milliliters instantly online.
Binary translator
Translate binary to text and text to binary online with a simple free binary converter.
Roman numeral converter
Convert numbers to Roman numerals and Roman numerals to numbers online instantly.
Number to words
Convert numbers into words online for cheques, forms, invoices, and written amounts.
Pounds to kg converter
Convert pounds to kilograms (lbs to kg) and back instantly. Also shows stone and pounds, with a quick reference table.
Km to miles converter
Convert kilometers to miles and miles to km. One km is 0.621 miles. Includes race distances and a reference table.
Feet to meters converter
Convert feet to meters and meters to feet. Shows feet and inches, centimeters, and a table of common lengths.
Cups to grams converter
Convert cups to grams for flour, sugar, butter, and 20+ baking ingredients. Also tablespoons, teaspoons, and grams back to cups.
Binary to decimal converter
Convert binary to decimal and decimal to binary with step-by-step working. Supports large numbers and two's complement.
Morse code translator
Translate text to Morse code and Morse to text. Play it as sound with a flashing light, adjust speed, and download a WAV.
Decimal to fraction converter
Convert decimals to simplified fractions and mixed numbers, including repeating decimals, or turn a fraction into a decimal.
Data storage converter (MB to GB)
Convert bytes, KB, MB, GB, TB, and bits in decimal or binary (GiB) units. Estimate download time for any file size.
Shoe size converter
Convert men's and women's shoe sizes between US, UK, EU, and Japan (cm), or find your size from foot length.
Currency converter
Convert currencies with daily central bank exchange rates — USD, EUR, GBP, JPY, and 25+ more. Historical rates back to 1999.