Ready-mix vs bagged concrete cost (and the breakeven)
Bagged mix is convenient for small jobs; a ready-mix truck is cheaper and faster for big ones. The trouble is knowing where the line sits. This guide sets up the two cost formulas side by side and finds the breakeven for your own prices.
The two costs you are comparing
Every concrete pour can be bought two ways, and each has a simple cost formula built from the prices you enter (this site never stores prices, so the math stays valid whatever concrete costs today):
Bagged = number of bags × price per bag
Ready-mix = cubic yards × price per yard + delivery + short-load fee
The number of bags comes from your volume (see how many bags of concrete for a slab); the cubic yards come from the same volume ÷ 27. The ready-mix vs bags tool computes both and tells you which wins.
A worked breakeven
Consider a 2-cubic-yard pour (54 cubic feet). By bag: 54 ÷ 0.60 = 90 bags of 80 lb, at $6 a bag = 90 × $6 = $540. By truck: 2 yards × $160 = $320, plus an $80 delivery = $400. Ready-mix wins by $140 — and that is before you count a full day of mixing 90 bags by hand. At two yards, the truck is clearly ahead.
Now shrink the job. At half a cubic yard (13.5 cu ft): by bag, 13.5 ÷ 0.60 = 23 bags × $6 = $138. By truck, 0.5 × $160 = $80, but a short-load fee on such a small order can add $60–$150, pushing the delivered price above the bags. That flip — where the short-load fee overtakes the bag premium — is the breakeven, and it typically lands somewhere around half a yard to a full yard.
The fees that decide it
The list price per yard is only part of a ready-mix bill. Watch for:
- Delivery: a flat trip charge, regardless of volume.
- Short-load fee: added to orders under roughly 4–5 yards, because the plant still sends a whole truck. This is the single biggest reason bags win on small pours.
- Standby / wait time: if the truck waits while you place concrete slowly.
- After-hours or Saturday surcharges.
Because these are real line items, the honest comparison uses your plant's actual quote, not a national average — which is exactly what the tool asks for.
Beyond price: labor and quality
Cost is not the only axis. A truck delivers uniform, plant-batched concrete and you place it in one continuous pour — no cold joints, no inconsistent water-to-mix ratio. Ninety bags mixed by hand over hours risk exactly those defects, plus a genuinely brutal day of labor. Conversely, bags let you work at your own pace, store leftovers dry, and pour a footing on Saturday without scheduling a truck. For a mailbox post or a single step, bags are simply the right tool.
A simple decision rule
| Pour size | Usually cheaper & easier |
|---|---|
| Under ~½ cubic yard | Bags |
| ~½ to 1 cubic yard | Depends on short-load fee — run the numbers |
| Over ~1 cubic yard | Ready-mix |
Use this only as a starting point, then confirm with your real prices in ready-mix vs bags and price the truck in concrete cost per yard.
The costs neither option puts on the invoice
Comparing bags to a truck on material price alone understates the real picture, because both leave costs off the receipt. Forming lumber, stakes, a screed board, a float and edger, rebar or mesh, a vapor barrier, and gravel for the sub-base are the same whichever way you buy the concrete. So is disposal of the old slab if you are replacing one. And the biggest uncounted cost with bags is your time and body: mixing dozens of bags is a hard day's labor that a truck simply removes. When you tally the true cost of a pour, add these shared items to both columns and put an honest value on the labor — it often tips a "close" comparison decisively toward ready-mix.
Timing, weather and lead time
Bags wait patiently on a pallet; a truck does not. Ready-mix has to be ordered ahead (often days in the busy season), scheduled for a specific window, and placed before it starts to set — typically within an hour or so of batching, less in heat. That means having your forms built, your crew ready and your access clear before the truck arrives, or you burn standby time. Weather matters too: pouring in extreme heat, cold or rain compromises the cure, so plants and pros watch the forecast. Bags give you the freedom to pour a small footing whenever conditions are right; a truck trades that flexibility for speed and volume. Factor the scheduling reality, not just the dollars, into which route fits your project.
The bottom line
Compare bags × price-per-bag against yards × price-per-yard + delivery + short-load. On anything over about a cubic yard, ready-mix almost always wins on both money and effort; below that, the short-load fee often tips it to bags. Every figure here is a planning estimate from the prices you enter — get a written quote from your ready-mix plant before you commit.