Gravel Calculator (Tons & Yards)
Tonnes/tons of gravel or crushed stone for an area at depth.
Suppliers sell by the tonne, you think in area — this is the bridge. Compaction loses ~10–15% of loose depth; order for COMPACTED thickness.
Formula
Gravel Calculator (Tons & Yards) is a free gravel calculator for civil engineers, contractors and quantity surveyors — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Gravel Calculator (Tons & Yards)
Tonnes/tons of gravel or crushed stone for an area at depth. The calculation implements t = L×W×depth×ρ; ~1.4 US ton per yd³ (Aggregate supplier conversion charts). Suppliers sell by the tonne, you think in area — this is the bridge. Compaction loses ~10–15% of loose depth; order for COMPACTED thickness.
How to use Gravel Calculator (Tons & Yards)
- 1Enter Length in m.
- 2Enter Width in m.
- 3Enter Depth in mm (Paths 50 · driveways 100–150 in lifts).
- 4Enter Bulk density in kg/m³ (Crushed stone 1,600 · pea gravel 1,500 · wet add 10%).
- 5Read Volume, Weight instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Gravel Calculator (Tons & Yards)?
- ✓Implements the standard formula — t = L×W×depth×ρ; ~1.4 US ton per yd³
- ✓Reference cited on-page: Aggregate supplier conversion charts
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Gravel Calculator (Tons & Yards) use?+
It computes t = L×W×depth×ρ; ~1.4 US ton per yd³, per Aggregate supplier conversion charts. The formula is displayed under the result.
What should I keep in mind when using this calculator?+
Suppliers sell by the tonne, you think in area — this is the bridge. Compaction loses ~10–15% of loose depth; order for COMPACTED thickness.
Does it include wastage?+
Yes — standard wastage/bulking factors are built in and stated in the formula line, so the quantity is an orderable number, not a bare geometric volume.
Is the Gravel Calculator (Tons & Yards) free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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