Measure → Calculate → Understand → Plan
Know exactly how much gravel to order.
GravelMatter turns the measurements of a path, bed, pad or driveway into cubic yards, tons, tonnes and bags — and shows every assumption it used to get there.
- 8 calculators
- 1 shared engine
- 0 sign-ups
§ 01 — Tools
Start with the job in front of you.
- In
- areas · depth · density
- Out
- yd³ · tons · tonnes · bags · cost
- 02Cubic yard calculatorPure volume: feet or metres to ft³, yd³ and m³.
- In
- areas · depth
- Out
- ft³ · yd³ · m³
- 08Gravel driveway calculatorTwo layers — base and surface — with one order sheet.
- In
- plan · 2 layers
- Out
- 2 layers · yd³ · tons
- 05Cubic yards to tons calculatorConvert cubic yards to tons and back, by material.
- In
- quantity · material
- Out
- yd³ ⇄ tons · m³ ⇄ t
§ 02 — How GravelMatter works
One chain of arithmetic, every step visible.
A 30 × 4 ft garden path, 3 in deep, worked through exactly as the calculator does it. Each figure is the real output of the engine.
- MeasureArealength × width120 ft²
- CalculateVolumearea × depth30.0 ft³
- Calculate+ Waste× 1.1033.0 ft³
- UnderstandWeight× 105 lb/ft³1.73 tons
- PlanOrderround up to ½ yd³1.5 yd³
§ 03 — Material & quantity
Same yard. Different weight.
Volume comes from your measurements. Weight depends on the material — which is why the density is always shown, sourced and editable. See the sources.
lb/ft³ · loose bulk density
- Gravel1.42 t/yd³
- Pea gravel1.42 t/yd³
- Crushed stone1.42 t/yd³
- River rock1.42 t/yd³
- Landscape rock1.42 t/yd³
- Road base1.42 t/yd³
§ 04 — Popular calculations
Real jobs, already measured.
Open any example with its measurements filled in, then change them to match your own ground.
- Garden path30 × 4 ft · 3 in deep · gravel1.5 yd³ to order1.22 yd³ with 10% waste · ≈ 1.73 tons
- Shed pad16 × 12 ft · 4 in · crushed stone3.0 yd³ to order2.61 yd³ with 10% waste · ≈ 3.70 tons
- Dry creek bed40 × 3 ft · 4 in · river rock2.0 yd³ to order1.63 yd³ with 10% waste · ≈ 2.31 tons
- Single driveway60 × 10 ft · 3 in base + 3 in surface14.0 yd³ in totalTwo layers, 20% compaction, 5% waste · ≈ 19.85 tons
§ 05 — Practical guidance
Before you order.
Three short references for choosing the stone and checking the numbers.
§ 06 — Methodology
Every number shows its working.
The order sheet separates the plain geometric volume from the allowances you choose, then shows the density used to reach tons. Formulas, unit factors and every source are published in full.
Read the methodology- 5
- published sources, each cited where it's used. Where no product-specific figure exists, we say so.
- 111
- automated arithmetic checks on the shared engine, including every worked example on the site.
- 0
- invented prices. Cost uses the price from your own supplier's quote.