Rex says
Everyday utility math — the kind you'd otherwise pull up four browser tabs for. I keep it to one clean answer.
Try a scenario
Click to load — tweak from there.Inputs
Result
Cubic yards of soil
3.70
Cubic feet
100.0
Bags if buying bagged
67
Bulk delivered cost
$141
Bagged cost
$369
Savings buying bulk
$228
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One click, a permanent link with your numbers baked in.
How to use this
- 1Enter length (ft).
- 2Enter width (ft).
- 3Enter depth (in).
- 4Enter bag size (cu ft).
- 5Enter bulk price per cubic yard ($).
- 6Enter price per bag ($).
- 7Read your cubic yards of soil on the right — it updates as you type.
- 8Hit Share to keep the scenario or send it to someone.
About this calculator
New lawns want 4 to 6 inches of topsoil; raised beds want the full bed depth. Bagged soil is convenient but costs three to five times bulk delivery.
Worked example
Using the values the calculator loads with:
Inputs
- Length: 20 ft
- Width: 10 ft
- Depth: 6 in
- Bag size: 1.5 cu ft
- Bulk price per cubic yard: 38 $
- Price per bag: 5.5 $
Results
- Cubic yards of soil: 3.7
- Cubic feet: 100
- Bags if buying bagged: 67
- Bulk delivered cost: $141
- Bagged cost: $369
- Savings buying bulk: $228
What each field means
Inputs
- Length (ft)
- The length used in the calculation, measured in ft. Starts at 20 ft so you have a working example on load.
- Width (ft)
- The width used in the calculation, measured in ft. Starts at 10 ft so you have a working example on load.
- Depth (in)
- The depth used in the calculation, measured in in. Starts at 6 in so you have a working example on load. Accepted range: 1–36 in.
- Bag size (cu ft)
- The bag size used in the calculation, measured in cu ft. Starts at 1.5 cu ft so you have a working example on load.
- Bulk price per cubic yard ($)
- The bulk price per cubic yard used in the calculation, measured in $. Starts at 38 $ so you have a working example on load.
- Price per bag ($)
- The price per bag used in the calculation, measured in $. Starts at 5.5 $ so you have a working example on load.
Results
- Cubic yards of soil
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Cubic feet
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Bags if buying bagged
- Returned as a whole number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Bulk delivered cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Bagged cost
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Savings buying bulk
- Returned as a money amount in US dollars. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the topsoil & garden soil calculator work?
New lawns want 4 to 6 inches of topsoil; raised beds want the full bed depth. Bagged soil is convenient but costs three to five times bulk delivery. The underlying maths is: Cubic yards = area × depth ÷ 12 ÷ 27.
What do I need to enter?
6 values: length, width, depth, bag size, bulk price per cubic yard, and price per bag. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the cubic yards of soil result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Estimates assume standard, average conditions — local rules, pricing, and materials vary.
Who is this tool for?
It's built for anyone doing everyday planning maths — a quick estimate that would otherwise need four browser tabs and a calculator app.
Accuracy and limitations
- Estimates assume standard, average conditions — local rules, pricing, and materials vary.
- Results are rounded for readability; add a buffer before ordering, booking, or committing.
- Double-check anything with a real cost attached against a local quote.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Topsoil Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/topsoil-calculator
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/topsoil-calculator" target="_blank" rel="noopener">Topsoil Calculator — RevenueLab</a> (2026).</p>
Source: [Topsoil Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/topsoil-calculator) (2026).