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Both calculators run independently — change the inputs on either side to compare results.
Physics
Electrical Power Calculator
Calculates the electrical power consumed or produced using voltage and current. Essential for sizing circuits, choosing fuses, and estimating energy costs for any electrical device.
Fill in the required fields to see your result.
Physics
Ohm's Law and Power Calculator
Instantly calculate electrical power three ways — P = V·I, P = V²/R, and P = I²·R — using Ohm's Law. Use it to verify circuit designs, select resistors, or compare power expressions.
Fill in the required fields to see your result.
Key differences
| Electrical Power Calculator | Ohm's Law and Power Calculator | |
|---|---|---|
| Category | Physics | Physics |
| Inputs required | 4 | 4 |
| Result | Energy Consumed (kWh) | Result (units) |
| What it does | Calculates the electrical power consumed or produced using voltage and current. Essential for sizing circuits, choosing fuses, and estimating energy costs for any electrical device. | Instantly calculate electrical power three ways — P = V·I, P = V²/R, and P = I²·R — using Ohm's Law. Use it to verify circuit designs, select resistors, or compare power expressions. |