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
Transformer Sizing Calculator
Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems.
Fill in the required fields to see your result.
Key differences
| Electrical Load Calculator | Transformer Sizing Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 4 | 5 |
| Result | Required Service Size (kW) | Required Transformer Size (kVA) |
| 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. | Determine the minimum transformer kVA rating needed for a given electrical load, accounting for demand factor, power factor, safety margin, and ambient temperature derating. Use this when specifying or replacing distribution transformers on new or existing electrical systems. |