Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical Home
Electrical Panel Load Calculator
Estimate the minimum service amperage your home's electrical panel needs based on lighting, kitchen appliances, and HVAC loads. Use this before upgrading a panel or planning a new home build.
Fill in the required fields to see your result.
Electrical Home
Electrical Panel Capacity Calculator
Determine whether your electrical panel has enough remaining capacity before adding new circuits or appliances. Critical for home additions, EV chargers, or workshop upgrades.
Fill in the required fields to see your result.
Key differences
| Electrical Panel Load Calculator | Electrical Panel Capacity Calculator | |
|---|---|---|
| Category | Electrical Home | Electrical Home |
| Inputs required | 3 | 5 |
| Result | Panel Capacity Needed (amps) | Remaining Panel Capacity (A) |
| What it does | Estimate the minimum service amperage your home's electrical panel needs based on lighting, kitchen appliances, and HVAC loads. Use this before upgrading a panel or planning a new home build. | Determine whether your electrical panel has enough remaining capacity before adding new circuits or appliances. Critical for home additions, EV chargers, or workshop upgrades. |