Quick start
- Enter bed area in square feet.
- Enter soil depth in inches.
- Add extra percent for settling, uneven beds, or a safer order.
Best uses
These are the situations this tool is meant for. If your task is close to one of these, the examples and notes below can help you choose the right inputs.
- Estimate soil for raised beds or garden top-offs.
- Convert square feet and inches deep into cubic yards.
- Estimate 1.5-cubic-foot and 2-cubic-foot bag counts.
- Add extra percent for settling or uneven beds.
What this calculator is solving
The Soil Calculator estimates garden soil, raised bed top-offs, and topsoil volume. It reports bulk cubic yards and common retail bag counts.
You do not need to memorize the formula first. Start by matching each input label on the calculator to the number, date, unit, or setting you actually have.
The formula in plain language
In plain language: The calculator converts depth from inches to feet, multiplies by area, adds extra percent, divides by 27 for cubic yards, and estimates common bag counts. The examples on the page are there so you can compare your inputs with a filled-out calculation before copying the answer.
If that sounds abstract, use the example cards on the calculator page. They show a complete set of inputs and the kind of answer you should expect.
How to read the answer
Read the headline result first. Then look at the smaller supporting lines because they explain the parts behind the answer, such as totals, units, ranges, or formula steps.
- Cubic yards is useful for bulk soil orders.
- Cubic feet helps compare bagged soil.
- Bag counts show estimates for 1.5-cubic-foot and 2-cubic-foot bags.
Common mistakes to avoid
If the answer looks strange, the most likely cause is a small input mismatch: the wrong unit, date, weight, scale, mode, or policy assumption.
- Do not forget that soil settles after watering.
- Do not ignore existing soil, compost mix, and bed shape.
- Check the actual bag volume because retail bags vary.
Research and references
These references shaped the calculator assumptions, unit choices, or safety notes.
Examples from the calculator
Cubic yards and bags
Bag count estimate
Low-depth soil estimate
FAQ in plain language
When should I use the Soil Calculator?
Use it when your task matches one of these common needs: Estimate soil for raised beds or garden top-offs. Convert square feet and inches deep into cubic yards. It works best when you already know the values, dates, units, or settings the page asks for.
What is the Soil Calculator doing with my inputs?
In plain language: The calculator converts depth from inches to feet, multiplies by area, adds extra percent, divides by 27 for cubic yards, and estimates common bag counts. The examples on the page are there so you can compare your inputs with a filled-out calculation before copying the answer.
What should I double-check before trusting the answer?
Soil settles and bag fill varies. Existing bed depth, compost mix, moisture, raised bed shape, and plant needs can change the amount to buy. Also check that you used the right unit, date, scale, or mode because small input changes can change the result.
Related tools
- Mulch Calculator Estimate mulch cubic yards, cubic feet, and 2-cubic-foot bags from area and depth.
- Cubic Yard Calculator Convert length, width, depth, and waste into cubic feet and cubic yards.
- Area Calculator Calculate area for rectangles, triangles, circles, trapezoids, and parallelograms.
Privacy and copying results
Recent answers stay visible only while you work in the current browser tab. They are not sent to a server.
Use Copy answer when you want to paste the expression and result into notes, homework, a message, or another document. Check the units and assumptions before copying.