Electrical Power Calculator
Electrical Power Calculator lets you single-phase real power equals RMS voltage × RMS current × power factor. Enter your own values or load the worked example.
- Copy or download the computed result
- Adjust voltage (v)
- See the processing method and limits
Method and calculation
Single-phase real power equals RMS voltage × RMS current × power factor.
Inputs and settings
Electrical Power Calculator accepts Voltage (V) (minimum 0); Current (A) (minimum 0); Power factor (minimum 0, maximum 1).
Worked example
Electrical Power Calculator example — Voltage (V): 230; Current (A): 5; Power factor: 1. Computed output: { "watts": 1150, "voltAmperes": 1150 }
Output and limitations
Electrical Power Calculator: Use finite inputs. Results use double-precision arithmetic.
Technical references: JavaScript numerical operations
Electrical Power Calculator FAQs
Electrical Power Calculator applies the following rule to your input: Single-phase real power equals RMS voltage × RMS current × power factor. The worked example on this page uses the same processor as the result button.
Electrical Power Calculator has these boundaries: Use finite inputs. Results use double-precision arithmetic. Start by checking the voltage (v) field against the units or format shown.
Electrical Power Calculator provides this sample: { "watts": 1150, "voltAmperes": 1150 }. Use the sample button to reproduce it, then replace the inputs with your own values.