How do I calculate free fall?

Choose the free fall formula under the kinematics category and enter the height or time value. The calculator uses gravitational acceleration to return the fall time or impact velocity.

Which values do I enter for an Ohm's law calculation?

In the Ohm's law tool under electricity, enter any two of voltage (V), current (I), and resistance (R) to solve for the third. For example, entering voltage and resistance gives you the current.

What do I need to calculate Newton's second law?

In the dynamics category, enter mass and acceleration to find force (F = m·a). When you provide two known values, the third is computed automatically.

Which unit system should I use for calculations?

For consistent results, use SI units (meter, kilogram, second, newton, volt, ampere). Mixing different units produces incorrect output, so convert all inputs to the same system before calculating.

What is the physical constants feature for?

The tool offers commonly used constants such as gravitational acceleration, the speed of light, and electrical constants ready to use. This saves you from looking up these values manually while solving a formula.

How do I use the speed, frequency, and wavelength relationship in wave calculations?

In the waves category, enter frequency and wavelength to find wave speed using v = f·λ. As with other formulas, just provide the two known values and the calculator solves for the third.

Are the results reliable enough for exams or official work?

Results are for informational and quick-check purposes; for homework, exams, or engineering decisions you should verify them with official formulas and units. For critical calculations, consult your teacher or relevant technical references.

Physics formula calculator — Free Online

Free Fall

v = g·t, h = ½g·t²

Object in free fall under gravity

t — Time (s)

g — Gravity (m/s²)

Results

v — Velocity

0 m/s

h — Distance Fallen

0 m

Physical Constants

g9.81 m/s²— Gravitational Acceleration

G6.674×10⁻¹¹— Universal Gravitation Constant

c3×10⁸ m/s— Speed of Light

h6.626×10⁻³⁴ J·s— Planck

N_A6.022×10²³— Avogadro

k_B1.381×10⁻²³ J/K— Boltzmann

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Frequently asked questions

The tool provides over 10 formulas across 5 main categories: kinematics, dynamics, energy, waves, and electricity. These cover core topics such as free fall, Newton's laws, and Ohm's law.

Physics Formula Calculator

Free Fall

📖 How to Use

Frequently asked questions