Kinetic Energy Calculator
Kinetic energy calculator
Compute KE with SI conversion, momentum, and velocity-squared in one view.
InputsKinetic energykg + mps • 6 digitsLive
Kinetic energy
9 J
2 kg at 3 m/s.
Live
9
v^2
9
Joules
0.009
kJ
6
Momentum
Advanced breakdownFormula, steps, metrics, and history
Kinetic energy (J)
9
Kinetic energy (kJ)
0.009
Momentum (kg*m/s)
6
Velocity squared
9
LaTeX formula
\mathrm{KE}=\frac{1}{2}mv^2Step-by-step
- Step 1: Convert inputs to SI units -> m = 2 kg, v = 3 m/s.
- Step 2: Square velocity -> v^2 = 9.
- Step 3: Apply KE = 1/2 * m * v^2 -> 9 J.
Formula
KE = 1/2 x m x v^2 Symbol legend
| Symbol | Meaning | Unit | Copy |
|---|---|---|---|
KE | Kinetic energy | J | |
m | Mass of object | kg | |
v | Velocity magnitude | m/s |
- KE is kinetic energy in joules (J).
- m is mass in kilograms (kg).
- v is velocity in meters per second (m/s).
Example
Worked example: 2 kg at 3 m/s
- 1 m = 2 kg
- 2 v = 3 m/s
- 3 KE = 1/2 x 2 x 3^2 = 9
Kinetic energy is 9 J.
How
- Enter mass in kilograms.
- Enter velocity in meters per second.
- Read the kinetic energy result in joules as values update live.
Avoid
- Using negative mass values, which are not physically valid.
- Forgetting to square velocity before multiplying.
- Mixing km/h and m/s without converting units first.
FAQ
What happens if velocity is zero?
Kinetic energy is zero because the object is not moving.
Can I use this with decimal values?
Yes, mass and velocity both accept decimal values.
Which unit is returned?
The result is returned in joules (J).
Switch
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