Swimming Pool Water Fill Calculator
Work out how many litres or kilolitres it takes to fill a rectangular or round pool.
Result
46,400 litres (46.4 kL)
- Surface area
- 32 m²
- Average depth
- 1.45 m
- Volume (litres)
- 46,400 L
- Volume (kilolitres)
- 46.4 kL
Volume is surface area multiplied by average depth. 1 cubic metre of water equals 1,000 litres, or 1 kilolitre.
Assumptions and notes
- Assumes a consistent cross-section from shallow to deep end — a straight-line average of the two depths.
- For an irregular-shaped pool, measure or estimate the closest equivalent rectangle or circle, or get a figure from your pool builder.
- Water pricing varies by state, retailer and usage tier — enter your own rate from a recent water bill for a cost estimate.
Information last checked: August 2026.
Frequently asked questions
How many litres are in a cubic metre?
1 cubic metre (1 m × 1 m × 1 m) holds 1,000 litres, which is the same as 1 kilolitre (kL).
What if my pool has a constant depth?
Enter the same value for both the shallow end and deep end depth fields — the average will simply be that depth.