Can I reuse potting soil?

Yes, refresh it with compost and slow-release fertilizer each season.

What's the difference between potting soil and topsoil?

Potting soil is a lighter, sterile blend for containers. Topsoil is heavier and used in ground.

How often should I replace potting soil?

Refresh every 1–2 years for most containers.

Gardening

Potting Soil Calculator

Estimate the potting soil you need for containers, planters, and pots.

Containers

Container 1

Shape

Diameterin

Soil depthin

Quantity

Volume each: 0.364 cu ft

Live estimate

Total potting soil

0.36 cu ft

Cubic yards: 0.013 cu yd
0.5 cu ft bags: 1 bags
1 cu ft bags: 1 bags
1.5 cu ft bags: 1 bags
2 cu ft bags: 1 bags

Recommended purchase

1 × 0.5 cu ft bag — the smallest whole-bag combination.

Per-row breakdown

#	Shape	Per container	Row total
1	round	0.364 cu ft	0.36 cu ft

Material assumptions

Potting soil density: 0.45 tons per cubic yard.
Fill pots to 1 inch below the rim to allow watering.
One cubic foot of potting mix = ~7.5 dry gallons.

Frequently asked questions

Raised Bed SoilGardening TopsoilLandscaping CompostGardening MulchLandscaping

These results are estimates only. Confirm quantities, compaction, waste, and delivery requirements with your supplier or project professional before ordering materials.