Your life in 400 free calculators

Astrophysics

17 calculators

Atmospheric thermodynamics

11 calculators

Continuum mechanics

21 calculators

Conversion

15 calculators

Dynamics

20 calculators

Electrical energy

12 calculators

Electromagnetism

18 calculators

Electronics

34 calculators

Fluid mechanics

29 calculators

Kinematics

21 calculators

Machines and mechanisms

20 calculators

Math and statistics

34 calculators

Optics

15 calculators

Physical chemistry

15 calculators

Quantum mechanics

14 calculators

Relativity

9 calculators

Rotational and periodic motion

17 calculators

Thermodynamics

31 calculators

Waves

14 calculators

Other

33 calculators
An example - Density Calculator
Calculate density
Weight/mass
lb
Volume
cu ft
Density
lb/cu ft
Lookup density
Material category
Metals
Material
Aluminum
Density
lb/cu ft
Will it float in fresh water?
Nope, it's gonna sink.
About us

Physics is what drives the world around us: it's the language that explains the most basic laws of nature. Why do things fall when we drop them? How come ice cubes float in fresh water? How much power does a rocket need to go into space? Behind each such question, there's numerical data and a formula that uses it.

At CalcTool, we aim to provide you with the answer without the need to remember the equations, no matter if you're checking your homework or satisfying your natural curiosity.

read more about us

The most popular calculators

Parallel resistor

Use this parallel resistor calculator to find the equivalent resistance of resistors in a parallel circuit or find a resistor value that will complete a required total resistance.
Parallel Resistor Calculator

Wavelength

Use our wavelength calculator and find the wavelength, speed, or frequency of any light or sound wave.
Wavelength Calculator

Momentum

This momentum calculator finds the linear momentum of an object given its mass and velocity.
Momentum Calculator

Potential energy

The potential energy calculator finds the gravitational potential energy of an object at a certain height.
Potential Energy Calculator

Acceleration

The acceleration calculator is a tool dedicated to solving the value of acceleration using various methods.
Acceleration Calculator

Gear ratio

Gear up! With our gear ratio calculator, you will learn how gear trains work, and how to calculate speed and torque for any pair of cogwheels.
Gear Ratio Calculator

Density

Our density calculator will guide you in a short exploration of this property of matter, while helping you calculate it for a generic object or for some selected materials.
Density Calculator

Ideal gas law

Most gasses act very close to the prediction of the ideal gas law calculator which bases on the equation PV=nRT.
Ideal Gas Law Calculator

Enthalpy

The enthalpy calculator lets you find the enthalpy change in a chemical reaction.
Enthalpy Calculator

Work

The work calculator finds this physical quantity using force and displacement or velocity change.
Work Calculator

Specific heat

This specific heat calculator finds the specific heat, energy, or temperature change of many substances.
Specific Heat Calculator

Dew point

The dew point calculator finds the dew point of the air, using its temperature and relative humidity.
Dew Point Calculator
  • Astrophysics (17)
  • Atmospheric thermodynamics (11)
  • Continuum mechanics (21)
  • Conversion (15)
  • Dynamics (20)
  • Electrical energy (12)
  • Electromagnetism (18)
  • Electronics (34)
  • Fluid mechanics (29)
  • Kinematics (21)
  • Machines and mechanisms (20)
  • Math and statistics (34)
  • Optics (15)
  • Physical chemistry (15)
  • Quantum mechanics (14)
  • Relativity (9)
  • Rotational and periodic motion (17)
  • Thermodynamics (31)
  • Waves (14)
  • Other (33)
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