Home improvement
Mulch, Soil & Gravel Calculator
Estimate bulk volume and bags for mulch, soil, gravel, or other loose materials. Nothing you enter leaves your browser.
Enter your values, then calculate.
Calculation method
A transparent estimate.
Every adjustable assumption stays visible in the calculator, and discrete materials are rounded up only when it is time to buy.
length × width × depth × (1 + extra %) ÷ bag volumeWhat this estimate assumes
- The result assumes one rectangular area at a uniform finished depth.
- The neutral extra allowance is 0%; add your own amount for settling, compaction, or uneven grade.
- Bulk volume is more reliable than weight because gravel and soil density vary with material and moisture.
Research sources
Simple by design
Get the answer, without the clutter.
FormatCalc is built for quick work. This mulch, soil & gravel calculator runs entirely on your device, so private text and data stay private.
Enter or paste your information.
02Set the values that matter to you.
03Copy, use, or download your result.
Common questions
Using the Mulch, Soil & Gravel Calculator
Is the Mulch, Soil & Gravel Calculator free to use?
Yes. FormatCalc's Mulch, Soil & Gravel Calculator is free to use with no account required.
Is my data private when I use the Mulch, Soil & Gravel Calculator?
Yes. This tool processes your input locally in your browser. FormatCalc does not upload or store what you enter.
How do I use the Mulch, Soil & Gravel Calculator?
Enter your values, select any units, and choose Estimate material. You can then copy the result.
How is the Mulch, Soil & Gravel Calculator calculated?
It uses length × width × depth × (1 + extra %) ÷ bag volume. The result is a planning estimate, so confirm the coverage or yield printed on your selected product.