🔋 Vacuum Runtime Calculator
Enter your battery capacity and power draw to estimate how many minutes of cleaning you'll get on a full charge.
🧮 Calculate Runtime
What is the Vacuum Runtime Calculator?
It converts your battery's capacity and your vacuum's power draw into a plain estimate of how many minutes it will run before needing a recharge — handy for planning a whole-house clean around a single charge, or comparing runtime claims between cordless models before you buy.
Try it with your vacuum's eco, standard, and boost mode power figures side by side to see exactly how much runtime you trade away for extra suction.
❓ Frequently Asked Questions
How does the vacuum runtime calculator work?
Enter the battery's capacity in watt-hours (Wh) and the vacuum's power draw in watts (W). Runtime in minutes is the battery capacity divided by the power draw, times 60 — a bigger battery or a lower power setting both stretch the runtime.
Where do I find my vacuum's battery capacity and power draw?
Battery capacity (Wh, sometimes given as mAh × voltage ÷ 1000) is usually on the battery pack label or spec sheet. Power draw varies by suction mode — manufacturers often publish separate figures for eco, standard, and boost/max modes, so check per-mode ratings for an accurate estimate.
Why is my real runtime shorter than the calculated figure?
This formula assumes a constant power draw and a battery delivering its full rated capacity. In practice, boost modes spike power draw, batteries lose capacity with age, and cold temperatures reduce usable capacity — so real runtime often comes in a bit under the calculated estimate.
Does runtime differ between eco mode and max/boost mode?
Yes, substantially. Eco mode draws far less power for a longer runtime at lower suction, while boost/max mode draws much more power for a short burst of strong suction. Calculate both by swapping in each mode's power draw to see the tradeoff.