How to measure your pool for a robotic cleaner
Pool robots are rated by floor area, by length, or both. Here's how to get both numbers for your pool, whatever its shape.
Length
Measure the longest straight line across the water, wall to wall. For freeform and kidney pools, measure the longest straight run. Dolphin and Polaris rate their robots this way.
Area
- Rectangle: length × width.
- Freeform or kidney: measure the rectangle around the pool and take about 85% of it. Our finder uses that allowance.
- Round: 3.14 × radius × radius. A 24 ft round pool is about 452 sq ft.
- Oval: 3.14 × half the length × half the width.
Aiper and Beatbot rate robots by floor area in sq ft or m². If your pool has a deep end, the actual floor and wall area is larger than the flat footprint, so leave some margin.
Common pool sizes
| Pool | Rectangle area | Freeform (≈85%) | Metric |
|---|---|---|---|
| 12 × 24 ft | 288 sq ft | 245 sq ft | 27 m² |
| 14 × 28 ft | 392 sq ft | 333 sq ft | 36 m² |
| 16 × 32 ft | 512 sq ft | 435 sq ft | 48 m² |
| 18 × 36 ft | 648 sq ft | 551 sq ft | 60 m² |
| 20 × 40 ft | 800 sq ft | 680 sq ft | 74 m² |
| 25 × 50 ft | 1,250 sq ft | 1,062 sq ft | 116 m² |
| 30 × 60 ft | 1,800 sq ft | 1,530 sq ft | 167 m² |
Leave headroom
Ratings are maximums. Steps, ledges, deep ends and heavy debris all take time. If your pool uses more than about 85% of a robot's rating, look at the next size up. The pool robot finder flags tight fits.