Easily calculate soil volumes & costs for raised beds. Enter your bed's size, choose units, and get instant results in litres, cubic feet, & total price.
Calculate the volume of the raised bed in m³ or ft³ depending on the selected unit system. Convert the result to litres and US gallons as well. Calculate the cost based on the user-selected price unit and entered price per unit. Always show all units in outputs.
Inputs: Unit system: Metric; Length: 2.4m; Width: 1.2m; Depth: 0.4m; Currency: GBP; Soil cost: 52 GBP per m³; Cost unit: m³. Calculation: Volume = 2.4 × 1.2 × 0.4 = 1.152 m³; Litres = 1.152 × 1000 = 1152 L; ft³ = 1.152 / 0.0283168 ≈ 40.7 ft³; US gal = 1.152 × 264.172 ≈ 304.2 US gal; Total cost = 52 × 1.152 = £59.90.
Measure the internal length, width, and depth of your raised bed to ensure accurate soil volume calculations. Always use the same unit system (either metric or imperial) for all dimensions, and measure to the nearest centimetre or inch for best results.
Our calculator provides soil volumes in cubic metres, litres, cubic feet, and US gallons. This allows you to compare suppliers or bag sizes, and ensures you buy the right amount of soil for your raised bed, regardless of how the product is sold.
Input your local soil price per cubic metre, litre, cubic foot, or US gallon, and select the appropriate unit. The calculator instantly converts your required volume to match, so you can see a realistic estimate of your total soil cost in your chosen currency.
Consider filling the bottom third of deep beds with coarse material, such as logs or stones, to reduce soil volume needed and improve drainage. This can save money and help your plants thrive.
A blend of topsoil, compost, and organic matter is ideal for most raised beds. Adjust the mix depending on your plants’ needs, and always check for quality when purchasing in bulk.
Multiply the internal length, width, and depth of your raised bed to get the volume, then use our calculator to convert to litres, cubic feet, or gallons and get a cost estimate.
This calculator is for rectangular or square beds. For round beds, measure the diameter and depth, use the formula π × (radius²) × depth, then enter the result as the length × width × depth.
Yes, simply select your preferred unit system and enter your measurements. The calculator automatically converts between metric and imperial units for all outputs.
Estimates are as accurate as the price per unit you enter. Check with your local supplier for up-to-date rates and always round up slightly to account for settling and compaction.
Use the output in litres or cubic feet to compare with bag sizes. Most soil bags state the volume in litres or ft³, making it easy to calculate how many bags you’ll need.
Yes, just enter the total dimensions. For very large projects, consider soil bulk density and supplier minimum delivery quantities.