Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Electrical
Battery Runtime Calculator
Estimate how many hours a battery will power a device based on its capacity, discharge depth, and system efficiency. Ideal for sizing backup power, solar storage, and portable electronics.
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
| Battery Runtime Calculator | Electrical Power Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 2 |
| Result | Runtime (hours) | Power (W) |
| What it does | Estimate how many hours a battery will power a device based on its capacity, discharge depth, and system efficiency. Ideal for sizing backup power, solar storage, and portable electronics. | 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. |