Robot Vacuum Coverage Calculator
Buying a robot vacuum without checking its coverage rating against your actual floor area can mean it never quite finishes a clean in one go. Enter your total floor area and the vacuum's per-charge coverage rating below to check.
Check if a robot vacuum can cover your whole floor
Enter your total floor area and the vacuum's per-charge coverage rating.
Check the manufacturer's spec sheet — mid-range robots often cover 100-150m² per charge.
Good news:
This vacuum can clean your whole floor in one charge
Recommended products
A few well-reviewed robot vacuums.
- Daily maintenance cleaning
- Wi-Fi + App Control
£299.99
Pros
- Smart mapping cleans by room in tidy rows rather than random bouncing
- Combined vacuum and mop in one pass, works with Alexa
- Ideal for pet hair on both carpets and hard floors
Cons
- No auto-empty base included at this price point
- Hard floors and mopping
- Wi-Fi + App Control
£349.00
Pros
- Combined vacuum and mop in one pass saves buying two machines
- dToF laser navigation with carpet detection avoids furniture and cables reliably
Cons
- Mopping pad needs manual rinsing after each use
- App setup can be fiddly on first pairing
- Pet hair and carpets
- Wi-Fi + Voice Assistant
£549.99
Pros
- Self-empty base for weeks of hands-off dust and debris storage
- LiDAR home mapping with edge cleaning catches missed patches
- Strong suction handles pet hair on carpet and rugs, plus built-in mopping
Cons
- Premium price compared with standard robot vacuums
- Self-empty base is bulky to find space for
Frequently asked questions
What does "coverage per charge" actually mean?
It's the manufacturer's estimate of how much floor area a robot vacuum can clean on a single battery charge, though real-world coverage often varies with carpet thickness, furniture layout and how much recharging/resuming the robot needs to do.
Do robot vacuums automatically resume cleaning after recharging?
Many mid-range and higher-end models support "recharge and resume," automatically returning to the dock, topping up, and continuing from where they left off — a useful feature if your floor area exceeds a single charge's coverage, but not universal on budget models.
Does floor type affect how far a robot vacuum can clean per charge?
Yes — hard flooring is generally easier and faster to cover than thick carpet, which requires more suction power and slower movement, both of which reduce the effective coverage area per battery charge.
Should I buy a robot vacuum rated well above my actual floor area?
A margin of extra coverage capacity is sensible, since real-world performance is often lower than the advertised figure due to obstacles, furniture, and multiple rooms — buying right at your exact floor area risks the vacuum falling short in practice.