Aquarium Gravel Calculator

Pick a standard tank or enter your own size and the gravel depth. You get the pounds, quarts and bags of gravel.

Enter your numbers and press Calculate.

Gravel for standard tanks

Tank	Size (in)	Lb at 1 in	Lb at 2 in
5 Gallon	16 × 8 × 10	8	16
10 Gallon	20 × 10 × 12	12	24
15 Gallon	24 × 12 × 12	18	35
20 Gallon High	24 × 12 × 16	18	35
20 Gallon Long	30 × 12 × 12	22	44
29 Gallon	30 × 12 × 18	22	44
40 Gallon Breeder	36 × 18 × 16	39	79
55 Gallon	48 × 13 × 21	38	76
75 Gallon	48 × 18 × 21	52	105

Standard sizes from Top Shelf Aquatics and Aquifarm; gravel at 105 lb per cubic foot.