Gravel Calculators

Sand and Gravel Mix Calculator

For blended base materials, bedding mixes, and fill: enter the total volume you need and the sand : gravel ratio by volume, and get each material's quantity in yards, feet, and tons.

Step 1 · Total blend volume
Step 2 · Ratio (sand : gravel)

How the blend math works

The split is simple parts-math: total volume ÷ total parts × each material's share. Worked example: 2 cubic yards of a 1:2 (sand : gravel) blend is 3 parts: sand gets ⅓ → 0.67 yd³ ≈ 0.9 tons, gravel gets ⅔ → 1.33 yd³ ≈ 1.9 tons.

One honest footnote: mixed volumes don't add perfectly — sand migrates into the gravel voids, shrinking the blend a few percent versus the sum of its parts. For ordering, that's well inside the usual 5–10% margin.

Same densities, same everywhere: this tool uses the site's standard figures — sand ≈ 1.35 t/yd³, gravel ≈ 1.42 t/yd³, dry and loose — identical to every other calculator here. See weight and density for why moisture moves them.

Concrete Mix Ratio Calculator

The blend with cement added — full concrete quantities.

Paver Base Calculator

When the base is pure compacted stone instead.

Gravel Weight Calculator

Convert each blend component to any weight unit.

Gravel Cost Calculator

Price each component at your rates.

Blend FAQ

What is a sand and gravel mix used for?

Blended sand-and-gravel (sometimes sold as "bank run" or "base material") is used for compacted fills, base layers under slabs and pavers, pipe bedding, and as the aggregate portion of site-mixed concrete. The right ratio depends on the job — more gravel for strength and drainage, more sand for smooth compaction.

How do I calculate how much of each I need?

Decide the ratio by volume (for example 1:2 sand to gravel), divide your total needed volume by the number of parts, and multiply each material by its share. The calculator does this split for any ratio and target volume.

Do sand and gravel volumes add up when mixed?

Not exactly — sand fills the voids between gravel pieces, so a mixed pile is slightly smaller than the sum of its parts (typically a few percent). Estimates are usually close enough, but it's one more reason the standard advice is to hold a small margin.