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Transparent planning mathPlans change. The math shouldn’t.

Measure once.
Build with certainty.

Transparent construction calculators for material takeoffs and estimates, with visible assumptions. Project, supplier and construction checks remain separate from the math.

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01 TRANSPARENT FORMULAS02 IMPERIAL + METRIC03 VISIBLE ASSUMPTIONS04 NO SIGN-UP REQUIRED
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Tools for the work ahead

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01GravelVolume, weight & cost02Cubic YardMaterial-neutral volume03RockLandscape rock quantity04DirtGeneral dirt quantity05TopsoilLawns, gardens & planting06SandSand volume & weight
Featured calculator · Ground materials

Gravel calculator

CALC / 001

Calculate rectangular volume. Enter optional density, supplier increment and price for weight, mass ordering and cost.

Transparent formulaProduction verification pending
01 / Measurements

Describe your area

Optional material densityEnter the bulk density for your material if you have it. Density varies by material, grading, moisture and supplier condition.
Supplier order incrementOptional: enter how your supplier sells material. Mass ordering also requires density.
Why add extra? Optional extra for handling, site variation or waste. No separate compaction model is applied. The initial 3 in depth is example input only.
Built around the job

Explore every category

From a weekend path to a full takeoff, find purpose-built tools organized the way projects actually happen.

Ground materials10 tools · 10 live
Area & volume2 tools · 2 live
Concrete & masonry1 tools · 1 live
Roofing1 tools · 1 live
Stairs & structures1 tools · 1 live
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More tools for your material order

Move from rough volume to a useful material estimate.

01Cubic Yard Calculator02Rock Calculator03Pea Gravel Calculator04River Rock Calculator05Aggregate Calculator06Road Base Calculator
Practical accuracy

Built for the site.
Clear enough for Saturday.

Transparent mathEvery formula and conversion is shown.

US + metric unitsSwitch systems without losing your work.

Visible assumptionsMethodology and material variations are shown.