Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Electrical
Battery Bank Sizing Calculator
Calculate the total battery bank capacity in amp-hours (Ah) needed for off-grid solar systems or backup power, factoring in autonomy, depth of discharge, and system efficiency losses. Use this when designing or expanding a battery-based energy storage system.
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
| Battery Bank Sizing Calculator | Transformer Sizing Calculator | |
|---|---|---|
| Category | Electrical | Electrical |
| Inputs required | 5 | 5 |
| Result | Required Battery Capacity (Ah) | Required Transformer Size (kVA) |
| What it does | Calculate the total battery bank capacity in amp-hours (Ah) needed for off-grid solar systems or backup power, factoring in autonomy, depth of discharge, and system efficiency losses. Use this when designing or expanding a battery-based energy storage system. | 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. |