Mulch Calculator
Estimate mulch volume for a rectangular garden bed or landscape area.
How to Use the Mulch Calculator
Enter bed length, width and mulch depth to estimate the volume needed.
Practical Example
A 4 m by 2 m garden bed covered 8 cm deep needs about 0.64 m³ of mulch.
Factors That Affect the Result
Bed shape, settling, mulch type, existing ground cover and desired finished depth can change the amount required.
Frequently Asked Questions
How deep should mulch be?
Use the depth appropriate for your plants and mulch type.
Should I add extra?
A small allowance can help cover settling and irregular edges.
Can I use this for multiple beds?
Yes. Calculate each bed and add the results.
Related Tools
Mulch Estimation Tips
Enter the garden-bed area and desired mulch depth to estimate the required volume. Deeper layers provide more coverage but can be unnecessary around some plants, so choose a depth appropriate for the landscape. Irregular beds and settling can increase actual use. When buying mulch by bag or cubic yard, convert the result to the supplier’s package size and round up slightly to cover edges, low spots and future touch-ups.