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Rip Rap tonnage as delivered.
About 1.4 short tons per cubic yard for graded rip rap; large angular stone leaves substantial voids.
Approximate volume
7.143 yd³
About 1.4 short tons per cubic yard for graded rip rap; large angular stone leaves substantial voids. Light bulky materials fill a container by volume long before they reach its weight limit.
- Conversion factor applied
- 0.71 yd³ per short ton
They open the calculator with your figures already in it
Rip Rap Tons to Cubic Yards Calculator: 7.14 yd³ — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- Inverse of approximately 1.4 short tons per cubic yard
- 1 short ton = 2,000 lb; a metric tonne is about 10% heavier
Inputs used
- Rip Rap weight (short tons)
- 10
Intermediate steps
- Conversion factor applied
- 0.71 yd³ per short ton
Confidence note: About 1.4 short tons per cubic yard for graded rip rap; large angular stone leaves substantial voids. Light bulky materials fill a container by volume long before they reach its weight limit.
What this calculation does not cover
- This is a loose volume, not a placed one. Keying the stone together closes much of the void the density assumes, so a tonnage covers less bank than the figure suggests, and the usual way that shortfall gets absorbed is a thinned layer that looks finished and moves in the first high flow.
- The toe takes its share before any of the face is covered. Where the blanket is keyed into a trench or thickened at the bottom of the bank, that stone comes out of this volume first, and a starved toe is where the undermining starts.
- Nothing here covers what goes underneath. The geotextile or graded bedding beneath the stone is a separate quantity, and where that filter is granular rather than a fabric it is its own depth of material to order, place and pay for.
Estimated cost — your price
This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-08-26 · in the site-wide review of 2026-09-06 · v1.0.0
Regulatory standards & verification citations2
- 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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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.