How to use it
- Enter bed length in feet.
- Enter bed width in feet.
- Enter bed height in inches.
- Click Calculate to see cubic feet and yards.
Your raised garden bed’s soil requirement depends on its internal volume. This calculator takes the bed’s length and width in feet and its height in inches, then instantly converts the space to cubic feet and cubic yards—using the exact conversion of 27 cubic feet per cubic yard. Knowing the volume helps you order the right amount of soil, mulch, or compost without waste or shortage. The result shows two numbers: the first is the total cubic feet, the second is the equivalent cubic yards, rounded to two decimals. Use the cubic‑feet figure for bulk‑bag estimates and the cubic‑yard figure when ordering from landscape suppliers. No extra factors are applied, so the output matches the true space inside your bed today.
Pro tips
- Add 5% extra soil to cover settling.
- Round up to the nearest whole cubic foot for bag calculations.
- Order soil in cubic yards for large orders to reduce delivery fees.
- Double‑check that dimensions are interior measurements, not outer edges.
Real-life examples
- A homeowner planning a 4 ft × 8 ft raised bed wants to know how many bags of compost to buy.
- A community garden organizer needs cubic yards of soil for ten 3 ft × 6 ft beds.
- A landscaper estimating mulch volume for a 2 ft‑high decorative bed.
Case study
Sam measured his 6 ft × 10 ft bed, entered 12 in height, and the calculator showed 720 ft³ (26.7 yd³). He ordered exactly that amount of soil, avoiding a $30 over‑order and finishing planting on schedule.