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Gravel Calculator

Soil & Ground Cover

Work out the gravel a driveway, drain or patio base needs, in layers, with compaction accounted for, so you order the right amount the first time.

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Mulch Calculator

Soil & Ground Cover

Work out how much mulch you need in bags or cubic yards, plus weight and cost, for one bed or several beds added together. Depth guidance sourced from university extension research.

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Soil Calculator

Soil & Ground Cover

Work out how much garden soil, fill dirt or a compost blend you need in bags or cubic yards, plus weight in tons and cost, for one bed or several added together. Density sourced from a Wisconsin DOT research report and USDA guidance.

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Topsoil Calculator

Soil & Ground Cover

Work out how much topsoil you need in cubic yards or tons, for filling a low spot, grading a yard or topdressing a lawn. Weight sourced from a Wisconsin DOT research report, topdressing depth from university turf extension guidance.

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Sand Calculator

Soil & Ground Cover

Work out how much sand you need in bags, cubic yards or tons, for a paver bedding layer, a sandbox, general fill or a mortar mix. Depth sourced from the ICPI paver installation standard, weight from a Wisconsin DOT research report.

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Paver Calculator

Patios, Walls & Paving

Count the pavers, gravel base, bedding sand and edge restraint a patio or path needs: sized to your paver size and laying pattern, not just area and depth.

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Sod Calculator

Lawn & Grass

Work out how much sod to order, in rolls or pallets, with a sourced waste allowance for cuts and curves, plus an editable cost estimate.

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Tree Removal Cost Calculator

Project Costs

Estimate tree removal cost by height, trunk diameter and site access, with stump grinding priced as a separate add-on, sourced from Angi's 2026 national data.

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Our Methodology

Numbers you can actually trust.

A calculator that's wrong costs real money: an under-ordered patio base, a lawn seeded at twice the rate it needed. So it matters where the numbers come from.

Built and checked by Usama, a civil engineer; every formula is confirmed against two independent sources before it ships.

Read the full sourcing policy
  1. University extension services

    Penn State, Oregon State, Texas A&M AgriLife and peers: regionally specific, peer-reviewed guidance.

  2. Federal agencies

    USDA, NRCS and NOAA: soil classification, frost dates, conservation practice standards.

  3. Published material specs

    Manufacturer data sheets and product labels, for figures that belong to a specific product.

  4. Industry standards bodies

    ASTM, ICPI, the Irrigation Association, for what no public agency publishes.

Why Bunny Corner

100% Free

Every calculator, fully free: no paywalls, no premium tier.

No Sign Up

Use any tool instantly. No account, no email required.

Secure & Private

Calculations run in your browser. Nothing you enter is stored.

Always Updated

Formulas and material data are reviewed and refreshed regularly.

What we won't do

Some rules we refuse to break.

  • Copy numbers from competing calculators.

  • Generate figures with a language model.

  • Invent false precision.

  • Treat marketing copy as a spec.

Every rule, explained in full:read our sourcing policy →

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