Physics · Multi-Form
Energy Calculator
Compute kinetic, gravitational, elastic, electrical, or thermal energy — with common unit conversions.
Energy Type
Energy of motion — depends on mass and speed
Mass
kg
Velocity
📏 Compare Against
Of Reference
0%
Total Energy
0 J
in the selected form
In Kilowatt-Hours
0 kWh
In Food Calories
0 kcal
In BTU
0 BTU
Energy Type
Kinetic
📊 Calculation Breakdown
| Quantity | Value | Note |
|---|
Governing equations
KE=½mv² | PE=mgh | PE_spring=½kx² | E=Pt | Q=mcΔT
- Kinetic Energy = ½ × mass × velocity² — energy of motion
- Gravitational PE = mass × g × height — energy stored by position in a gravity field
- Elastic PE = ½ × spring constant × displacement² — energy stored in a stretched or compressed spring
- Electrical Energy = Power × Time, or Voltage × Current × Time — what a utility meter actually measures
- Thermal Energy = mass × specific heat capacity × temperature change — heat needed to change an object's temperature (no phase change)
⚠️ These are idealized, lossless formulas. Real systems lose energy to friction, air resistance, electrical resistance, or heat transfer to surroundings — actual efficiency is always somewhat lower than the theoretical value calculated here.