Topsoil Calculator
Find how much topsoil, fill dirt, or loam a lawn or garden bed needs from its area and depth, shown in cubic feet and cubic yards.
Result
5.56 cu yd
300 sq ft at 0.5 ft deep needs about 5.56 cubic yards of topsoil
Quick Answer
A topsoil calculator multiplies area by depth to find cubic feet. Divide cubic feet by 27 to get cubic yards. For 300 square feet at 0.5 feet deep, the volume is 150 cubic feet. Dividing 150 by 27 gives 5.56 cubic yards, rounded to two decimal places.
How Topsoil Volume Is Measured For Garden Beds And Lawns
A topsoil calculator finds how much soil fills a known area at a set depth. It multiplies area in square feet by depth in feet to get cubic feet, then divides by 27 to show cubic yards for a bulk order. Top soil calculator, fill dirt calculator, and loam calculator searches often use the same area and depth math. The names do not mean each soil fits the same job, since plant soil, grade fill, and firm base fill have different uses. The result helps plan lawns, beds, low spots, and shallow fill, but slopes, settled depth, grade, truck size, water, stones, plant matter, site checks, and supplier load size can change the final amount before soil is brought to the site.
The Topsoil Cubic Yard Formula And Unit Conversion
Area is the full soil zone. Depth is the planned layer after all unit changes. Cubic feet show the raw volume. Cubic yards match a common unit for bulk soil orders.
- Volume in cubic feet = area in square feet × depth in feet.
- Volume in cubic yards = cubic feet ÷ 27.
Topsoil Calculator Steps For Area, Depth And Volume
Inputs
- Area: the soil placement zone in square feet.
- Depth: the planned soil layer in feet.
Steps
- Measure the full area.
- Add separate area sections when needed.
- Convert depth in inches to feet.
- Enter area and depth.
- Read cubic feet and cubic yards.
- Check load size and soil settlement.
Topsoil Volume Example With Each Step And Rounding
300 sq ft area and 0.5 ft depth.
- Cubic feet: 300 sq ft × 0.5 ft = 150 cu ft.
- Cubic yards: 150 cu ft ÷ 27 = 5.555555... cu yd.
150 cubic feet, or 5.56 cubic yards. The tool rounds cubic yards to two decimal places after keeping full precision.
When A Top Soil Volume Estimate Fits A Garden Project
Use the estimate for lawns, beds, low spots, and shallow fill zones with a known area and depth. Ask the supplier or project lead to check soil type, settled depth, grade, and delivery amount.
For nearby tools, the construction calculators hub lists every material and quantity calculator, and the glossary defines common calculator terms.
Assumptions
- Area covers the full placement zone.
- Depth stays even across the zone.
- Inputs use feet-based units.
- One cubic yard equals 27 cubic feet.
- The result shows volume, not weight.
Limitations
- Slopes and changing depth need separate sections.
- Loose soil can settle after placement.
- The tool does not assess soil quality, gradation, or drainage.
- Truck and bucket sizes can differ.
- Local grading and drainage rules still apply.
In Practice
A common mistake is entering inches as feet. Divide inches by 12 before entry. Four inches is 4 ÷ 12 = 0.3333 feet. The result is an estimate and does not replace grade plans, local rules, or expert review.
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Frequently Asked Questions About Topsoil Calculations
Is A Top Soil Calculator Different From A Loam Calculator?
The volume math is the same when both tools use area and depth. Topsoil and loam are material names, not different geometric formulas. Choose the soil product for the job, then use the same area-by-depth method to find volume.
Can A Fill Dirt Calculator Use The Same Formula?
Yes, area × depth works for a flat fill layer with even depth. Deep fills, slopes, and compacted structural fill need more checks because conditions vary across the site. Split irregular areas into zones and follow the project plans.
Why Does The Result Show Cubic Yards?
Bulk soil is often sold by the cubic yard, so the result uses that unit. The calculator finds cubic feet first and then divides by 27. One cubic yard holds 27 cubic feet under the standard unit rule.
Does The Result Include Soil Settlement?
The base topsoil math does not add extra soil for later settling. Soil type, water, handling, and how it is spread can change the final depth. Ask the supplier or site lead whether the order needs more soil.
Sources
Last updated: . Reviewed for accuracy against the formula shown above.