Robot Vacuum Coverage Time Calculator

Volume I  ·  May 2026  ·  489 words

Estimate how long a robot vacuum needs to clean your home, including whether it can finish in a single charge or requires mid-clean recharging with auto-resume. Coverage speed depends on floor type (carpet slows robots by 20–40%), navigation efficiency, and the cleaning pass strategy (single vs edge+grid).

Navigation efficiency is the dominant variable. A LiDAR-mapped robot like the Roborock Q Revo cleans in orderly rows with minimal overlap, achieving approximately 90 square feet per minute on hard floors. A random-bounce robot may cover the same floor area 2–3 times but only effectively clean each spot once, achieving roughly 30 square feet per minute. Carpet reduces speed by 20–40% due to increased rolling resistance and the need for higher suction power, which draws more battery current and reduces runtime per charge. For homes requiring more than one battery charge, robots with auto-resume return to the dock, recharge (typically 2–4 hours), and continue where they stopped — an important feature for floor plans exceeding 1,200 square feet.