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How Many Bags of Concrete?

Calculate how many 40lb, 60lb, or 80lb bags you need for any project. Get exact counts and a cost comparison between bag sizes and ready-mix concrete.

Concrete Bag Calculator

Bags Needed by Size

40
lb bag
bags
0.30 ft³ / bag
★ Best Value
60
lb bag
bags
0.45 ft³ / bag
80
lb bag
bags
0.60 ft³ / bag
Total Volume
ft³
cubic yards
Shopping List — Best Option (80 lb Bags)
Concrete Mix 80 lb (Quikrete / Sakrete)
Water needed (approx.)
Mixing method
⚠️ Add 10% to your bag count before purchasing. It's better to return an unopened bag than to run short mid-project.
Bag Size Comparison
Bag SizeYieldBags/yd³Approx. PriceBest For
40 lb0.30 ft³90 bags~$4.50Small patches, limited mobility
60 lb0.45 ft³60 bags~$5.98Solo work, walkways, fence posts
80 lb0.60 ft³45 bags~$7.28Slabs, driveways — best value
Buying Concrete Bags: What You Need to Know
Bag sizes, mixing methods, and how to avoid the most expensive beginner mistakes
Which Bag Size Is Right for You?

80 lb bags give the best value per cubic foot but require two hands and a strong back. 60 lb bags are the best balance of cost and manageability — one person can handle them comfortably all day. 40 lb bags are best for tight spaces, seniors, or anyone with back limitations. For large projects, 80 lb bags mean fewer trips and less mixing time.

Quikrete vs. Sakrete vs. Generic

Quikrete is the most widely available concrete bag brand in North America and offers the broadest product line — standard, fast-setting, high-strength, crack-resistant, and fiber-reinforced formulas. Sakrete is a comparable quality product common in the eastern U.S. Store-brand bags from Home Depot or Lowes are typically the same quality at a lower price. All produce a nominal 3000–4000 PSI mix.

Mixing Methods by Project Size
1–5 Bags
Hand mix in a wheelbarrow or trough with a hoe. Fastest setup, works fine for small patches, post holes, and repairs.
5–20 Bags
Drill with a mortar paddle attachment (Amazon, ~$25). Dramatically reduces fatigue compared to hand mixing. Mix 2–3 bags per batch.
20+ Bags
Rent a barrel mixer from Home Depot, Lowes, or a local rental shop (~$50–$80/day). Handles 2–3 bags per batch, continuous operation.
⚠️ The #1 bag concrete mistake: Adding too much water. More water makes mixing easier but dramatically weakens the finished concrete. The correct consistency looks like thick peanut butter — stiff enough to hold its shape but workable. If it flows freely, it's too wet.

Common Project Bag Count Answers

The specific answers people search for most — with exact bag counts
How many bags for a 4×4 slab?
At 4" thick: 7 bags of 80lb concrete. The slab is 16 sq ft × 0.333 ft ÷ 27 = 0.20 cubic yards = 5.4 cu ft ÷ 0.60 = 9 bags with waste.
How many bags for a 10×10 slab?
At 4" thick: 41 bags of 80lb concrete, or 1.37 cubic yards. Consider ready-mix — at this size a truck quote is worth getting.
How much area does a 60 lb bag cover?
A 60lb bag yields 0.45 cubic feet. At 4" thick that covers about 1.35 sq ft per bag. For a 10×10 slab you would need 82 bags of 60lb concrete.
How many 80lb bags are on a pallet?
A standard pallet holds 42 bags of 80lb Quikrete (one cubic yard equivalent). Buying by the pallet from a big-box store is the cheapest bag option for projects over 1 yard.

Buying and Storing Concrete Bags

An 80lb bag yields approximately 0.60 cubic feet of mixed concrete. A 60lb bag yields 0.45 cubic feet. A 40lb bag yields 0.30 cubic feet. These numbers are printed on every bag — always verify before purchasing because manufacturers vary slightly. When buying in quantity, ask for bags from the same production run to avoid color variation in the finished surface.

Store bags flat in a dry location off the ground. Concrete absorbs moisture through paper — bags stored on concrete floors or in humid conditions can partially set inside the bag within days. Always inspect bags for hard lumps before mixing. Return lumpy bags for fresh product — they produce weak concrete with poor workability.

🚛 Truck Payload Reality Check

Concrete weighs 4,000 lbs per cubic yard. Here is what your truck can legally carry.
2026 Truck Max Payload Concrete Capacity Bag Capacity (80lb)
Toyota Tacoma (standard)1,521 lbs~0.38 cu yd~18 bags
Toyota Tacoma (i-FORCE MAX)1,705 lbs~0.42 cu yd~21 bags
Ford F-150 (PowerBoost Hybrid)1,740 lbs~0.43 cu yd~21 bags
Ford F-150 (5.0L V8)2,235 lbs~0.55 cu yd~27 bags
Ford F-150 (3.5L EcoBoost)2,440 lbs~0.61 cu yd~30 bags
3/4-ton (F-250, Silverado 2500)3,500+ lbs~0.87 cu yd~43 bags

*Payload values from 2026 manufacturer specs. Your actual payload is on the door-jamb sticker. Add accessories (toolbox, bedliner) and that number drops 100-300 lbs. A driver and passenger count against payload too.

If your project needs more than 1 cubic yard (4,000 lbs), pickup-truck delivery requires multiple trips. For 2+ cubic yards, ready-mix delivery is almost always cheaper than the gas, time, and suspension wear of multiple bag runs. Most ready-mix trucks deliver 8-10 yards in one trip.

1:2:4 Mix Ratio — Bag Equivalent

When working from a mix ratio recipe instead of pre-mixed bags, here is what one cubic yard of 1:2:4 mix (2500 PSI) requires in raw materials:

  • Portland cement: 6 bags (94 lbs each) — about 564 lbs total
  • Sand: 1,170 lbs — about 0.6 cubic yards
  • Gravel/aggregate: 1,740 lbs — about 0.9 cubic yards
  • Water: 28-32 gallons (0.5 water-cement ratio by weight)

This produces approximately 1 cubic yard of finished 2500 PSI concrete suitable for footings and foundation walls. For a stronger 1:2:3 mix (3000 PSI), use 7 bags of cement instead of 6. Use our Concrete Mix Ratio Calculator for exact quantities of any volume.

Concrete Bags FAQ

Everything you need to know before heading to the hardware store