Unit Eater

Unique calculator that not only converts units, but can also perform calculations with them. Perfect for school, university, work, or personal use! For math, physics, chemistry, biology, engineering, or any other natural sciences!

• Standard calculator functions usable with or without units
• Target unit freely definable
• Define your own units if you need them
• History of recent calculations
• Quick transfer of parts or entire calculations from history
• ANS function to dynamically use the last result
• Customizable result format
• Quick search
• Quick access to important functions like square or cube
• Undo and redo of last steps
• Dark mode

Boost your productivity, focus on the essentials, and leave conversion errors in the past!

Supports many units, prefixes, and constants:

• Prefixes: kilo, mega, giga, tera, centi, milli, micro, nano, …
• Constants: mass of proton, neutron, electron, Avogadro's constant, electric field constant, gas constant, Planck's constant, …
• Angles: radian, degree, degree-minute, degree-second, gradian, turn, steradian, …
• Length: meter, mile, inch, foot, yard, nautical mile, chain, furlong, cable length, rod, …
• Area: square meter, hectare, acre, are, square kilometer, square inch, square foot, square yard, …
• Volume: liter, cubic meter, fluid ounce, gallon, gill, pint, quart, barrel, tablespoon, teaspoon, …
• Mass: gram, ton, ounce, pound, carat, grain, …
• Time: second, minute, hour, day, year, …
• Speed: meter per second, kilometer per hour, miles per hour, knot, speed of light, …
• Acceleration: gravitational acceleration, meter per second squared, …
• Energy: joule, kilocalorie, erg, watt-hour, electronvolt, …
• Power: watt, horsepower, …
• Force: Newton, pond, kilopond, tf, ozf, lbf, …
• Torque: Newton meter, ozfin, ozfft, lbf*in, …
• Frequency: Hertz, revolutions per minute, …
• Pressure: pascal, bar, atm, at, Torr, mmHg, osi, ose, psi, psf, …
• Viscosity: Poise, Stokes, …
• Density: gram per cubic centimeter, kg per cubic meter, …
• Radiation: Becquerel, Curie, Rutherford, Roentgen, Gray, Sievert, rem, …
• Light: candela, lumen, lux
• Electricity: volt, ampere, ohm, coulomb, elementary charge, farad, siemens, …
• Magnetism: Weber, Tesla, Henry, …

Is your desired unit not listed? You can define any additional units!

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