Length conversions

• meter , foot, inch, yard, mile, kilometer, centimeter, micrometer, nautical mile, fathom, astronomical unit, light year, parsec, micron, Plank length, Bohr radius, ...

Mass conversions

• gram, kilogram, milligram, ounce, pound, tonne, dram, carat, pennyweight, quarter, quintal, atomic mass unit, datlon, crith, electron mass, ...

Volume conversions

• cubic meter, cubic centimeter, cubic kilometre, barrel, bucket, bushel, gallon, litre, cup, gill, fluid ounce, pint, quart, ton, ....

Density conversions

• gram per liter, gram per milliliter, kilogram per litre, milligram per milliliter, microgram per milliliter, ounce per gallon, pound per gallon, pound per cubic foot, ...

Time conversions

• second, femtosecond, picosecond, nanosecond, microsecond, millisecond, minute, hour, day, month, year, ...

Temperature conversions

• Celsius degree, Kelvin degree, Fahrenheit degree, Rankine degree, Reaumur degree

Area conversions

• acre, hectare, decare, circular inch, ping, rood, section, square meter, square millimeter, square micrometer, square nanometer, square centimeter, square kilometer, square foot, square inch, square mile, square yard, ...

Pressure conversions

• atmosphere, bar, mmH2O, mmHg, dyne per square centimeter, kilogram-force per square centimeter, kilogram-force per square millimeter, newton per square meter, pound per square foot, pound per square inch, pascal, kilopascal, megapascal, gigapascal, ...

Energy conversions

• BTU (IT), Celsius heat unit, erg, calorie, gigacalorie, foot-pound force, watt hour, kilowatt hour, hartree, electron volt, horsepower-hour, inch-pound force, joule, millijoule, kilojoule, megajoule, standard cubic foot, standard cubic centimeter, ...

Power conversions

• BTU per hour, calorie per hour, kilocalorie per hour, calorie per second, erg per minute, foot-pound-force per second, horsepower (electric), watt, milliwatt, kilowatt, megawatt, ...

Force conversions

• dyne, gram-force, kilogram-force, kilonewton, kip, newton, pound-force, tonne-force, ounce-force, ...

Speed conversions

• foot per hour, foot per second, inch per second, kilometer per hour, meter per second, mile per hour, mile per second, knot, speed of light, speed of sound, ...