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Pond size chart
Volumes for common rectangular garden ponds at a typical depth, with what each needs. Open a size for more depths and an oval version.
| Pond | Depth | Volume | Liner | Pump (goldfish) |
|---|---|---|---|---|
| 6 × 4 ft | 2.0 ft | 359 US gal (1,359 L) | 12 ft × 10 ft | 359 GPH |
| 8 × 6 ft | 2.0 ft | 718 US gal (2,718 L) | 14 ft × 12 ft | 718 GPH |
| 10 × 8 ft | 3.0 ft | 1,795 US gal (6,796 L) | 18 ft × 16 ft | 1,795 GPH |
| 12 × 8 ft | 3.0 ft | 2,154 US gal (8,155 L) | 20 ft × 16 ft | 2,154 GPH |
| 15 × 10 ft | 3.0 ft | 3,366 US gal (12,743 L) | 23 ft × 18 ft | 3,366 GPH |
| 20 × 15 ft | 4.0 ft | 8,977 US gal (33,980 L) | 30 ft × 25 ft | 8,977 GPH |
| 2 × 1.5 m | 0.60 m | 476 US gal (1,800 L) | 4.00 m × 3.50 m | 476 GPH |
| 3 × 2 m | 0.80 m | 1,268 US gal (4,800 L) | 5.50 m × 4.50 m | 1,268 GPH |
| 4 × 3 m | 1.20 m | 3,804 US gal (14,400 L) | 7.00 m × 6.00 m | 3,804 GPH |
Liners include 1 ft (imperial) or 0.3 m (metric) overlap on each edge, rounded up. Natural, curved ponds of the same overall length and width hold less — roughly 75–85% — so measure with the pond volume calculator.