Cubic Feet to Quarts Calculator

How to convert cubic feet to quarts

A US dry quart equals 1/32 of a US bushel, which is approximately 67.2 cubic inches. Since 1 ft³ = 1,728 in³, one cubic foot equals 1,728 ÷ 67.2 ≈ 25.71 dry quarts. Bagged soil and potting mix typically use dry quarts.

Worked examples

Common uses

• Bagged potting soil and seed-starting mix
• Garden bed soil quantity by quart-rated bags
• Container gardening volume planning
• Small-batch compost and amendments

Where this conversion comes up

Quarts shows up in cooking, gardening (potting soil), and chemical labeling. Cubic feet converts to either US dry quarts or US liquid quarts.

• Potting soil and seed-starting mix — bagged in dry quarts or cubic feet, but recipes call for quarts.
• Raised garden beds — small beds and planters are easier to plan in quarts.

Common mistakes to avoid

• Confusing dry quarts with liquid quarts. US dry quarts and US liquid quarts are different — 1 ft³ = 25.71 dry quarts but 29.92 liquid quarts. Garden products usually use dry quarts.
• Using imperial vs US quarts. 1 imperial (UK) quart ≈ 1.137 liters; 1 US liquid quart ≈ 0.946 liters. Recipes and product labels vary by country.
• Forgetting that potting soil bags are usually dry quarts. A “25-quart” bag of potting mix is about 0.97 ft³.

Expert tips

1. Multiply cubic feet by 25.71 for US dry quarts. Use this for soil, mulch, sand, and other dry bulk materials.
2. Multiply by 29.92 for US liquid quarts. Use this for water and other liquids.
3. For potting soil, dry quarts is the bag-label standard. 1 ft³ of soil mix ≈ 25 dry quarts. See the soil calculator and raised bed calculator.
4. For small garden beds, quarts gives clearer numbers than cubic feet. A 2 ft × 2 ft × 6 inch herb planter is 2 ft³ — about 50 dry quarts, easier to picture as bag count.