Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Electrical
Electrical Load Calculator
Determine the total electrical demand of a building and the minimum service panel size needed to support it safely. Used by electricians and contractors during new construction or renovation planning.
Fill in the required fields to see your result.
Electrical
Electrical Power Calculator
Calculates electrical power in watts from voltage and current using P = V Γ I. Used by electricians, engineers, and DIYers to size fuses, cables, power supplies, and estimate appliance energy use.
Fill in the required fields to see your result.
Key differences
| Electrical Load Calculator | Electrical Power Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 2 |
| Result | Required Service Size (kW) | Power (W) |
| What it does | Determine the total electrical demand of a building and the minimum service panel size needed to support it safely. Used by electricians and contractors during new construction or renovation planning. | Calculates electrical power in watts from voltage and current using P = V Γ I. Used by electricians, engineers, and DIYers to size fuses, cables, power supplies, and estimate appliance energy use. |