Concrete Bag Calculator

The concrete bag calculator converts cubic yards or cubic feet into 60‑lb or 80‑lb bag counts so you can plan pickups without overbuying. It is ideal for DIY pours like pads and posts, and for contractors who need a quick check before ordering pallets. Enter your volume, select a bag size, and add waste for spillage, uneven subgrade, and leftover material in the mixer. Bag yields vary by product, so this tool uses typical yield assumptions and rounds up to whole bags. If you are still estimating volume, start with a slab or yardage takeoff and then convert here. For a quick reference, review the bags per yard guide before ordering. It helps avoid running short on small pours, and the ready-mix cost per yard guide can help you compare bag totals against delivery pricing.

Inputs

Tip: Bag yields vary by brand and mix consistency. Check the bag label if you need higher accuracy.

Results

Bags needed
49.5
Rounded up: 50 bags
Total volume
1 yd³
27 ft³ • Yield per bag: 0.6 ft³

FAQ

  • How many 80 lb bags are in a yard? About 45 bags per cubic yard at ~0.6 ft³ per bag.
  • How many 60 lb bags are in a yard? Roughly 60 bags per cubic yard at ~0.45 ft³ per bag.
  • Should I always add waste? Yes. Add 5–10% for spillage, uneven subgrade, and cleanup.
  • How many bags cover 1 cubic foot? About 1.7 bags of 80 lb mix or 2.2 bags of 60 lb mix, before waste.
  • Can I mix 60 lb and 80 lb bags together? Yes, but track total yield so your volume is accurate and check product labels.
  • Should I round up to whole pallets? For large orders, rounding up to a pallet size helps avoid shortages and simplifies pickup.

Assumptions

  • Bag yields are approximate; verify with the bag label.
  • Waste accounts for spillage, uneven forms, and subgrade voids.
  • Conversions use 1 cubic yard = 27 cubic feet.

Example

A 1 yd³ pour with 10% waste needs about 50 bags of 80 lb mix.

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Concrete Estimating Guide

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