UPS Runtime Calculator — Estimate Backup Time by Load
Tell us your equipment load and required runtime. We'll show every UPS in our catalogue that fits — with the estimated runtime at your specific load.
Find a UPS that fits your load
Drag the slider to your equipment's wattage. Pick a minimum runtime. We'll rank the UPS units in our catalogue by how well they match.
Power factor 0.80 VA × power factor = real load in watts. Default 0.8 covers most modern IT gear.
Advanced settings
Recommended UPS units
Sorted by best fit. UPS units sized to run at 60-80% of capacity get top placement.
No UPS in our catalogue meets that load and runtime requirement. Try a smaller load, a shorter runtime, or contact a specialist for an engineering assessment.
Complete your setup
Accessories that pair with the recommended UPS. Model-specific accessories are listed on each product page.
Talk to a Canadian UPS specialist
Send us your equipment list and we'll spec the right UPS, including extended battery pack options if you need longer runtime than a single UPS can deliver.