Gravel calculator for landscape projects.
Enter area dimensions and depth to estimate how much gravel you need in m³/yd³/ft³, total weight (tons/kg/lb), and bag counts.
Choose the shape that matches your space and select a material density close to what you’ll buy.
- Units: Feet & inches (imperial) or metres & centimetres (metric). Lengths are in feet/metres; depth is in inches/cm.
- Shapes: Rectangle, circle, border/edging (length × width), or triangle.
- Depth presets: Tap 1–12 in buttons for quick fill (auto‑converted in metric).
- Outputs: Volume, weight by material density, and bags (50 lb, 40 lb, 20 kg, 25 kg).
Measuring tips: Measure the longest and widest points, average uneven depths, and add 5–10% for waste if the surface isn’t perfectly level or if compaction is expected.
Gravel Calculator
Estimate how much gravel you need. Choose a shape, enter dimensions and depth, pick units and material, and get volume, weight, and bag counts.
How the gravel calculator works?
The calculator multiplies area by depth to find volume.
It then converts cubic metres to cubic yards and cubic feet, and applies the chosen material density to estimate total weight in metric tons, US short tons, kilograms, and pounds.
Why material density matters?
Different gravels have different bulk densities.
Crushed stone is denser than pea gravel or river rock. A denser material will weigh more for the same volume. Always match the density option to the product you plan to order.
Choosing the right depth?
Common depths range from 2 in to 6 in for landscaping.
Paths and driveways often need 4–6 in of compacted gravel, while decorative beds may only need 2–3 in. The depth presets help you test different scenarios quickly.
Ordering gravel in bags
The calculator also converts your total weight into bag counts.
Bags are convenient for small projects, but bulk delivery is more economical for larger areas. Rounding options let you see whether to order the next whole bag, round to nearest, or only full pallets.
Tips for accurate results
- Measure length and width at the widest points.
- Convert uneven areas into rectangles, circles, or triangles and add them together.
- Add 5–10% extra for spillage, compaction, and cutting around edges.
Always check with your supplier’s density values, as local gravel types and moisture content can affect weight significantly.
Gravel Calculator FAQs
Measure the length and width of the area, multiply for total area, then multiply by the desired depth. Convert the volume to cubic metres or yards and apply the gravel density to get the weight.
Decorative beds need 2–3 in (5–7.5 cm), garden paths 3–4 in (7.5–10 cm), and driveways 4–6 in (10–15 cm). Deeper layers improve stability under heavy loads.
A metric ton is 1000 kg. With 25 kg bags, you need about 40 bags for 1 ton. With 50 lb bags, you need about 44 bags for 1 ton.
Depending on type, 1 cubic yard weighs between 1.3 and 1.7 short tons (about 2600–3400 lb or 1180–1540 kg).
Common densities are 1.4 t/m³ for river rock, 1.5 t/m³ for pea gravel, and 1.6–1.7 t/m³ for crushed stone and road base. Check with your supplier for the most accurate value.