UPS Runtime & Sizing Calculator
Estimate how long a UPS will run your equipment, and the UPS rating you need.
Results
Battery energy: 216 Wh
Estimated runtime: 58 min
Minimum UPS rating: 278 VA
Suggested UPS size: 600 VA
Runtime is an estimate: batteries deliver less at high loads, low temperatures and as they age. Check the UPS maker's runtime chart for the final figure.
How it works
Battery energy is volts x amp-hours x number of batteries. Runtime is that energy x inverter efficiency divided by the load. The UPS rating is the load divided by its power factor, plus headroom, rounded up to a common UPS size.
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