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Rip Rap Tons to Cubic Yards Calculator

Convert a rip rap tonnage into cubic yards to check storage, capacity and coverage.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax

Approximate volume

7.14 cu yd

High confidence

About 1.4 short tons per cubic yard for graded rip rap; large angular stone leaves substantial voids. The inverse of the volume-to-weight figure. Light bulky materials fill a container by volume long before they reach its weight limit.

Conversion factor applied
0.71 cu yd per short tons

Converting a rip rap tonnage into volume gives the coverage available at the specified layer thickness. Placement is what determines whether it works: rip rap is laid rather than tipped, keyed together so that individual stones support one another, and normally over a filter layer or geotextile that stops the underlying soil washing out through the voids. A layer tipped loosely without that separation fails from underneath while the stone itself appears intact.

Add the equipment this sizes

This result is a specification — 7.143 cu yd — not a quantity. Put the thing it sizes into your project: how many, what you call it, and your supplier’s price.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Inverse of approximately 1.4 short tons per cubic yard
  • 1 short ton = 2,000 lb; a metric tonne is about 10% heavier

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Frequently asked questions

How much bank will this cover?
Convert to volume and divide by the specified layer thickness. Because the stone is large, edge effects and irregular ground consume more than a flat calculation suggests.
Can rip rap be placed by tipping?
Poorly. Tipped stone segregates and does not key together, leaving weak points. Proper placement positions the stone so pieces interlock, which is slower and considerably more durable.
Why did my rip rap sink?
Usually because the filter layer was missing or inadequate, letting the soil beneath migrate out through the voids. The stone then settles into the void it created.