300 gallon tank: dimensions that work
300 gal = 1,136 L = 40.1 ft³. Full weight ≈ 2,504 lb of water. Below: every diameter/length pair that holds exactly this — geometry, not brand specs, so you can sanity-check any manufacturer sheet.
| Diameter | Length |
|---|---|
| 24 in dia | 153 in (12.8 ft) |
| 30 in dia | 98 in (8.2 ft) |
| 36 in dia | 68 in (5.7 ft) |
| 38 in dia | 61 in (5.1 ft) |
| 42 in dia | 50 in (4.2 ft) |
| Diameter | Height |
|---|---|
| 30 in dia | 98 in tall |
| 36 in dia | 68 in tall |
| 38 in dia | 61 in tall |
| 42 in dia | 50 in tall |
Have a real tank with these dimensions? Generate its inch-by-inch dip chart, or run partial fills on the universal calculator. Manufactured tanks add heads, legs and fittings — treat these tables as the geometric core and trust the nameplate where one exists.
FAQ
How big is a 300 gallon tank?
It depends on the proportions — the tables above show every horizontal length and vertical height that holds exactly 300 gallons at common diameters. Pure geometry: πr²L = 300 × 231 in³.
How much does 300 gallons weigh?
About 2,504 lb as water or 2,115 lb as diesel — grade ranges and more liquids on the weight library.
How many litres is 300 gallons?
1,136 litres (1.1 m³). Exact: 1 US gal = 3.785411784 L.