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The number of 80 lb bags of concrete mix.
An 80 lb bag of standard concrete mix yields about 0.6 cubic feet of set concrete. 60 lb bags yield about 0.45 ft³, so check which size you are pricing.
Equivalent volume
1 yd³
An 80 lb bag yields about 0.6 ft³; 27 ft³ make a cubic yard. Yield varies by product — confirm the cubic feet per bag printed on the mix you are actually buying.
- Conversion factor applied
- 0.02 yd³ per bag
They open the calculator with your figures already in it
Concrete Bags to Cubic Yards Calculator: 1 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)
- Typical yield for an 80 lb bag of standard concrete mix: approximately 0.6 cubic feet of set concrete
- 1 cubic yard = 27 cubic feet, so roughly 45 x 80 lb bags per cubic yard
Inputs used
- 80 lb bags (bags)
- 45
Intermediate steps
- Conversion factor applied
- 0.02 yd³ per bag
Confidence note: An 80 lb bag yields about 0.6 ft³; 27 ft³ make a cubic yard. Yield varies by product — confirm the cubic feet per bag printed on the mix you are actually buying.
What this calculation does not cover
- A yard of bags and a yard of ready-mix are the same volume and not the same product on a specification. Bagged mix comes with no batch ticket, no slump control and no entrained air unless the bag states it, so it cannot stand in where the spec calls for air entrainment against freeze-thaw, a stated water-cement ratio, or cylinders for the inspector. The volumes match; the durability and the paperwork may not.
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 2026-09-06 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations2
- Typical yield for an 80 lb bag of standard concrete mix: approximately 0.6 cubic feet of set concrete
- 1 cubic yard = 27 cubic feet, so roughly 45 x 80 lb bags per cubic yard
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The decision behind this conversion is nearly always bags versus ready-mix. Expressing a pile of bags as cubic yards puts both options in the same unit, and the answer is often sobering: a single cubic yard is roughly forty-five eighty-pound bags, which is well over a ton and a very long day with a mixer. Local delivery minimums and short-load surcharges vary, so the cost crossover moves around, but the labour crossover tends to arrive earlier than the material one. Yield figures differ between products — high-strength and rapid-set mixes are not the same as standard — so take the cubic feet per bag from the actual bag rather than from a general rule.