UPS Calculator
Calculate UPS backup time, battery requirements, and sizing for uninterruptible power supply systems.
UPS Parameters
Backup Time
244.8
Minutes
(4.08 hours)
UPS Sizing
Required VA Rating625 VA
Recommended VA (20% headroom)750 VA
Real Power500 W
Battery Analysis
Total Battery Energy2400 Wh
Usable Energy2040 Wh
Battery Current Draw49.02 A
Discharge Rate (C-rate)0.49C
Min Capacity for 30min24.5 Ah
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.