How to use it
- Enter bed length in feet.
- Enter bed width in feet.
- Enter desired soil depth in inches.
- Read cubic feet, bags (1.5 cu ft each) and cubic yards.
What it does – The calculator turns the dimensions of your raised bed (length, width, and soil depth) into three practical measures: total cubic feet of soil, the number of standard 1.5 cu ft bags, and cubic yards for bulk orders.
Why it matters – Buying too little leaves gaps; buying too much wastes money and space. Knowing the exact volume lets you budget, compare bag prices, and order the right amount of bulk soil, which weighs about 1.3 US tons per cubic yard.
How to read the results – Cubic feet is the raw volume of your bed. Divide by 1.5 to see how many bags you’ll need, rounding up to the next whole bag. Convert cubic feet to cubic yards (divide by 27) for bulk deliveries. Use these numbers to place an accurate order without guesswork.
Pro tips
- Add 5‑10% extra volume for settling.
- Round bag count up to the next whole bag.
- Order bulk soil by cubic yards if you need more than 2 cubic yards to save on bag handling.
- Measure depth from the base of the bed, not from the top of the soil.
Real-life examples
- A homeowner planning a 4 × 8 ft raised bed 12 in deep wants to know how many 1.5 cu ft bags to buy.
- A community garden needs to order bulk soil for multiple beds and wants the total cubic yards for delivery.
- A landscaper needs to estimate soil weight for a truck load to avoid over‑loading.
Case study
Maria wanted a 6 ft × 5 ft bed 10 in deep. The calculator showed 30 cu ft, which meant 20 bags and 1.11 cubic yards (≈1.44 tons). She ordered exactly that, saved $45 on excess bags, and had enough soil to fill the bed without extra trips.