Concrete Bag YieldCalculator USA — Cu Ft & Sq Ft Per Bag
Instantly find out how many cubic feet, cubic yards, and square feet of coverage you get from any number of 40 lb, 60 lb, or 80 lb bags of Quikrete or Sakrete — for slabs, driveways, footings, post holes & more.
A concrete bag yield calculator for the USA answers the reverse of the standard bags-needed question: given a set number of bags, exactly how much concrete will you get? Whether you have leftover bags from a prior job or you are working with a fixed budget, this free tool instantly converts your 40 lb, 60 lb, or 80 lb bags of Quikrete or Sakrete into total cubic feet, cubic yards, and square feet of coverage at your chosen pour thickness — so you know exactly what your stockpile will cover before you break ground on any concrete project across the United States.
📦 Concrete Bag Yield Calculator — USA
Enter your number of bags, bag size, and pour thickness to calculate total yield and coverage area.
80 lb bag — most cost-effective; 0.60 cu ft yield per bag.
Enter the total number of bags you have or plan to buy.
Slab 4 in · Driveway 6 in · Footing 8–12 in · Path 3 in
Choose how you want coverage area displayed.
Total Concrete Yield
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Cubic feet from your bags
📋 Volume Summary
📐 Coverage at Your Thickness
📦 Concrete Bag Yield Visual — How Bags Convert to Volume & Area
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Premixed Concrete Bag (80 lb)
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Finished Concrete Pour
0.60 Cu Ft of Concrete Portland Cement · Sand · Aggregate · Water
🟦 Covers ~1.8 sq ft at 4 inches thick
0.60
Cu Ft per 80 lb bag
0.45
Cu Ft per 60 lb bag
0.30
Cu Ft per 40 lb bag
80 lb Bag60 lb Bag40 lb BagFinished Concrete
What Is Concrete Bag Yield and Why Does It Matter?
The concrete bag yield refers to the volume of finished, mixed concrete produced by a single bag of premixed concrete product. In the USA, the yield of a standard 80 lb bag of Quikrete or Sakrete is approximately 0.60 cubic feet of compacted, finished concrete. Understanding bag yield is essential when you have a fixed number of bags — for example, leftover stock, a bulk purchase, or a delivery with a set quantity — and you need to know how far they will go on your project.
🔵 US Concrete Bag Yield at a Glance
An 80 lb Quikrete or Sakrete bag yields approximately 0.60 cubic feet. A 60 lb bag yields 0.45 cu ft, and a 40 lb bag yields 0.30 cu ft. To find total yield: multiply the number of bags × yield per bag. To find coverage area: divide total cubic feet ÷ (thickness in inches ÷ 12). Always expect 5–10% real-world loss from mixing, spillage, and uneven subgrades.
📦 80 lb Bag Yield (Most Used)
Each 80 lb bag of Quikrete 5000, Quikrete Concrete Mix, or Sakrete High Strength yields 0.60 cu ft of finished concrete. At a 4-inch pour depth, one bag covers roughly 1.8 sq ft. You need 45 bags to yield a full cubic yard (27 cu ft).
🧑🔧 60 lb Bag Yield (DIY Standard)
A 60 lb bag yields 0.45 cu ft of finished concrete. At 4 inches depth, it covers approximately 1.35 sq ft. To fill one cubic yard, you need 60 bags. The 60 lb size is the most popular for homeowners mixing by hand due to its manageable weight.
🪶 40 lb Bag Yield (Lightweight)
The 40 lb bag yields 0.30 cu ft per bag. It covers approximately 0.9 sq ft at 4 inches deep. While less efficient per bag, the 40 lb size is ideal for elderly users, tight work areas, and small repairs where carrying heavier bags is not practical.
How to Use the Concrete Bag Yield Calculator
Using this concrete bag yield calculator takes less than 30 seconds. Simply select your bag size, enter the number of bags you have, and input your planned pour thickness. The calculator instantly outputs the total cubic feet, cubic yards, and your coverage area in square feet or square yards — giving you all the data you need to plan your pour precisely.
📐 Concrete Bag Yield Formula (USA)
Total Yield (cu ft) = Number of Bags × Coverage per Bag
Total Yield (cu yd) = Total Yield (cu ft) ÷ 27
Coverage Area (sq ft) = Total Yield (cu ft) ÷ [Thickness (in) ÷ 12]
Example: 20 × 80 lb bags = 12.0 cu ft → covers 36 sq ft at 4 inches thick
⚠️ Real-World Yield Is Slightly Less Than Rated
Quikrete and Sakrete print a theoretical yield on every bag, but real-world yield is typically 5–8% lower due to mixing water variation, spillage, and uneven subgrade absorption. For critical pours, calculate based on 95% of the rated yield, or simply plan for one to two extra bags per 10 used. Returned unopened bags are accepted within 90 days at Home Depot and Lowe's.
Concrete Bag Yield Reference Table — USA (2025)
The table below shows the total concrete yield for common quantities of each bag size sold in the United States, along with coverage at 4-inch depth — the most common residential slab thickness per ACI 302 guidelines.
Bag Size
Qty of Bags
Total Yield (cu ft)
Total Yield (cu yd)
Coverage at 4 in (sq ft)
Coverage at 6 in (sq ft)
80 lb
10 bags
6.0 cu ft
0.22 cu yd
18.0 sq ft
12.0 sq ft
80 lb
20 bags
12.0 cu ft
0.44 cu yd
36.0 sq ft
24.0 sq ft
80 lb
45 bags
27.0 cu ft
1.00 cu yd
81.0 sq ft
54.0 sq ft
80 lb
90 bags
54.0 cu ft
2.00 cu yd
162.0 sq ft
108.0 sq ft
60 lb
10 bags
4.5 cu ft
0.17 cu yd
13.5 sq ft
9.0 sq ft
60 lb
20 bags
9.0 cu ft
0.33 cu yd
27.0 sq ft
18.0 sq ft
60 lb
60 bags
27.0 cu ft
1.00 cu yd
81.0 sq ft
54.0 sq ft
40 lb
10 bags
3.0 cu ft
0.11 cu yd
9.0 sq ft
6.0 sq ft
40 lb
20 bags
6.0 cu ft
0.22 cu yd
18.0 sq ft
12.0 sq ft
40 lb
90 bags
27.0 cu ft
1.00 cu yd
81.0 sq ft
54.0 sq ft
80 lb — 10 Bags
Total Yield6.0 cu ft / 0.22 cu yd
Coverage at 4 in18.0 sq ft
Coverage at 6 in12.0 sq ft
80 lb — 20 Bags
Total Yield12.0 cu ft / 0.44 cu yd
Coverage at 4 in36.0 sq ft
Coverage at 6 in24.0 sq ft
80 lb — 45 Bags (1 Cu Yd)
Total Yield27.0 cu ft / 1.00 cu yd
Coverage at 4 in81.0 sq ft
Coverage at 6 in54.0 sq ft
60 lb — 10 Bags
Total Yield4.5 cu ft / 0.17 cu yd
Coverage at 4 in13.5 sq ft
Coverage at 6 in9.0 sq ft
60 lb — 60 Bags (1 Cu Yd)
Total Yield27.0 cu ft / 1.00 cu yd
Coverage at 4 in81.0 sq ft
Coverage at 6 in54.0 sq ft
40 lb — 10 Bags
Total Yield3.0 cu ft / 0.11 cu yd
Coverage at 4 in9.0 sq ft
Coverage at 6 in6.0 sq ft
40 lb — 90 Bags (1 Cu Yd)
Total Yield27.0 cu ft / 1.00 cu yd
Coverage at 4 in81.0 sq ft
Coverage at 6 in54.0 sq ft
Factors That Affect Concrete Bag Yield in the USA
The rated yield printed on a bag of Quikrete or Sakrete is a laboratory average. In practice, several real-world variables can increase or decrease how much usable concrete you get from each bag. Understanding these factors helps you order the right amount on your first trip to Home Depot or Lowe's.
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Water Content
Adding too much water increases workability but reduces yield density and final strength. Stick to the manufacturer's recommended 3 quarts per 80 lb bag. Excess water also increases shrinkage, which can cause visible surface cracking after 28-day cure.
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Temperature & Weather
Hot weather above 90°F speeds up set time, sometimes forcing workers to discard partially set material before it can be placed. Cold weather below 40°F slows hydration and may require heated water or blankets. Both extremes can reduce effective yield per bag.
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Subgrade Absorption
Dry, porous soil or gravel sub-bases can absorb water from the fresh mix, slightly reducing yield and potentially weakening the concrete-subgrade interface. Pre-wetting the subgrade with a garden hose before pouring prevents this and helps concrete cure evenly.
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Mixing Method
Hand-mixing in a wheelbarrow typically leaves more concrete residue than a drum mixer, resulting in slightly lower effective yield. A rented drum mixer at $35–$50/day from Home Depot or Sunbelt Rentals recovers that lost yield and is worth it for 10+ bags.
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Bag Age & Storage
Bags stored longer than 12 months or exposed to humidity can undergo partial hydration inside the bag, forming lumps. Lumpy cement must be broken down or discarded, reducing effective yield. Always store bags on pallets or boards off the ground and under a tarp.
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Formwork Tightness
Loose or warped formwork allows concrete to seep under the forms, consuming material without contributing to your pour volume. Check all form joints before pouring and seal any gaps wider than 1/8 inch with foam backer rod or duct tape on the outside face.
When Bagged Concrete Yield Is Not Enough — Switch to Ready-Mix
Bagged concrete is economical and convenient for small jobs, but there is a practical limit where the concrete bag yield becomes insufficient and ordering a ready-mix concrete truck makes far more sense financially and physically. Knowing this threshold before you start can save you hours of labor and hundreds of dollars.
✅ Use Bagged Concrete When Your Yield Requirement Is:
Under 0.5 cubic yards (13.5 cu ft) — roughly the equivalent of 23 × 80 lb bags. This is ideal for small patios, individual post holes, steps, anchor bolts, and repair patches. For larger pours, the cost and physical effort of mixing and placing bagged concrete quickly exceeds the convenience, and a ready-mix supplier becomes the smarter choice.
🪣 Bagged Concrete (Best for Small Jobs)
Best for yields under 0.5 cubic yards. Each 80 lb bag at ~$9 means one cubic yard of concrete costs ~$405 in bags. You also pay in labor — mixing 45 bags by hand or with a drill mixer takes 2–3 hours for one person. Return unused unopened bags within 90 days.
🚛 Ready-Mix Truck (Best for Large Jobs)
Ready-mix concrete is delivered at $150–$200 per cubic yard in most US metro areas, with a typical minimum order of 1 yard. For yields over 1 cubic yard, ready-mix is 50–60% cheaper than bagged and arrives already mixed. Short load fees apply for orders under 5 yards.
🏗️ Volumetric Mixer (Best for Mid-Size Jobs)
A volumetric concrete truck mixes on-site in any amount — eliminating waste and minimum loads. Ideal for 0.5–3 yard pours in areas with limited access. Costs slightly more per yard than standard ready-mix but far less than bagged. Available from specialty companies in most US cities.
Pro Tips to Maximize Concrete Bag Yield on Every Pour
Experienced US contractors and DIYers use the following techniques to get the most usable concrete from every bag they open — reducing waste, cutting costs, and ensuring a stronger finished product that meets ACI 301 and ACI 302 placement standards.
🚨 Never Add Extra Water to Stretch Your Yield
Adding extra water to get more volume from a bag is one of the most common and damaging mistakes in DIY concrete work. Each additional quart of water beyond the specified ratio reduces concrete strength by roughly 200–300 PSI. A 4,000 PSI mix can drop to 2,500 PSI with just one extra quart per bag. Use a plasticizer additive if you need more workability without sacrificing strength.
Pre-wet your tools and mixer — a damp drum or wheelbarrow prevents the first batch of cement paste from sticking to dry surfaces, improving total yield per bag.
Mix completely before placing — undermixed concrete has dry pockets of cement that do not contribute to yield or strength. Mix for at least 3–5 minutes per batch until uniform color and consistency.
Use a vibrator or rod-tamp — consolidating the concrete removes air voids, which increases actual placed density and reduces the volume gap between theoretical and real-world yield.
Scrape the mixer clean — several pounds of material can remain stuck in a drum or wheelbarrow. Use a margin trowel or stiff brush to scrape residue into the pour before it sets.
Cure with plastic sheeting — covering the pour within 20 minutes of finishing locks in moisture, ensuring full hydration of all cement particles and achieving the maximum design strength from your bags.
Buy bags from one production run — mixing bags from different lots can cause slight yield and color variation. Check the date code on the bag side to confirm they are from the same batch.
Frequently Asked Questions — Concrete Bag Yield USA
How many cubic feet does an 80 lb bag of Quikrete yield?+
An 80 lb bag of Quikrete (any standard concrete mix) yields approximately 0.60 cubic feet of finished, compacted concrete when mixed with the correct amount of water (approximately 3 quarts per bag). In real-world conditions, factoring for mixing losses, the effective yield is closer to 0.56–0.58 cu ft. This figure applies equally to Sakrete 80 lb bags and most other US brand 80 lb concrete products.
How many square feet does one 80 lb bag of concrete cover?+
Coverage depends entirely on pour thickness:
At 2 inches thick: 1 bag covers ~3.6 sq ft
At 3 inches thick: 1 bag covers ~2.4 sq ft
At 4 inches thick: 1 bag covers ~1.8 sq ft
At 6 inches thick: 1 bag covers ~1.2 sq ft
At 12 inches thick: 1 bag covers ~0.6 sq ft
The formula is: Coverage (sq ft) = 0.60 ÷ [Thickness (in) ÷ 12].
How many 60 lb bags of concrete equal one cubic yard?+
One cubic yard equals 27 cubic feet. Since a 60 lb bag yields 0.45 cubic feet, you need 60 bags of 60 lb concrete to equal one cubic yard. At approximately $7.25 per bag, one cubic yard via 60 lb bags costs around $435 — slightly more than using 45 × 80 lb bags ($405). The 60 lb bag is preferred by many DIYers for manageable weight despite the slightly higher cost per cubic yard.
What is the yield of a 40 lb bag of concrete?+
A 40 lb bag of Quikrete or Sakrete yields approximately 0.30 cubic feet of finished concrete. You would need 90 bags to equal one cubic yard (27 cu ft), at a cost of roughly $522 in bags — making the 40 lb bag the least economical option per cubic yard. It is best reserved for small patches, anchor bolts, single post holes, and users who cannot safely carry heavier bags.
How do I calculate concrete bag yield for a circular pour?+
For circular pours (columns, round footings, circular pads), use this formula:
Volume (cu ft) = π × radius² × depth (ft)
Example: 12-inch diameter, 24-inch deep post hole = π × 0.5² × 2 = 1.57 cu ft
Bags needed = 1.57 ÷ 0.60 = ~3 × 80 lb bags
Or in reverse (yield): 3 bags × 0.60 = 1.80 cu ft — enough for a 12-inch, 24-inch-deep hole with slight overage. Our yield calculator handles rectangular pours; for circular pours, use the formula above.
Does Quikrete Fast-Setting have the same yield as standard concrete?+
No. Quikrete Fast-Setting Concrete Mix comes in 50 lb bags (not 80 lb), with a yield of approximately 0.375 cubic feet per bag. It is designed exclusively for post holes and sets in 20–40 minutes without pre-mixing — pour dry into the hole, add water, and brace the post. Do not use Fast-Setting mix for flatwork (slabs, driveways, walkways) as the rapid set time makes it impossible to finish the surface properly.
How many bags of concrete do I need for a 10×10 ft slab at 4 inches thick?+
A 10×10 ft slab at 4 inches thick requires 33.3 cubic feet of concrete. With 10% waste factor:
80 lb bags: 33.3 ÷ 0.60 × 1.10 = 62 bags
60 lb bags: 33.3 ÷ 0.45 × 1.10 = 82 bags
40 lb bags: 33.3 ÷ 0.30 × 1.10 = 123 bags
At 62 × $9 = $558 for 80 lb bags, this is borderline territory for ordering 1.5 yards of ready-mix (~$250–$300 delivered) which would save you significant labor and cost.
Is the yield different between Quikrete and Sakrete?+
For standard 80 lb bags, both Quikrete and Sakrete list 0.60 cubic feet per bag as the yield — they are essentially identical in coverage. The aggregate mix ratios are similar (both use ASTM C387 specifications), though aggregate gradation may vary slightly by plant. In practice, the yield difference between brands is negligible and well within the normal mixing variation range of ±5%.
Can I increase concrete yield by adding aggregate myself?+
Technically yes, but it is not recommended for premixed bagged products. Quikrete and Sakrete bags already contain the correct ratio of Portland cement, sand, and aggregate by weight. Adding extra gravel disrupts this ratio, reducing strength and workability. If you need more volume at lower cost, it is better to purchase a bag of Quikrete All-Purpose Sand separately and mix your own concrete from scratch using Portland cement, sand, and gravel — a more economical approach at larger scales.
How do I store concrete bags to preserve their yield?+
To preserve full yield from your bags:
Store on a wooden pallet at least 4 inches off the ground to prevent moisture wicking
Cover with a plastic tarp — even in a garage, humidity can slowly degrade bags
Keep away from direct sunlight, which can heat the bags and accelerate early hydration
Use within 12 months of purchase for best results
Check for lumps before mixing — bags with rock-hard lumps larger than a marble have partially set and yield will be reduced
What is the yield of a 94 lb bag of Portland cement?+
A 94 lb bag of Portland cement is not a premixed product — it is raw cement only, requiring separate sand and aggregate. When combined with 2 parts sand and 3 parts gravel (a standard 1:2:3 mix by volume), one 94 lb bag of Portland cement yields approximately 4.5 cubic feet of finished concrete. This is significantly more yield per bag than premixed products, but requires you to source, measure, and transport sand and aggregate separately — making it economical only for larger pours above 2–3 cubic yards.
How many bags of concrete do I need per post hole?+
The number of bags per post hole depends on hole dimensions:
6 in diameter × 2 ft deep: ~0.39 cu ft → 1 × 80 lb bag
8 in diameter × 2 ft deep: ~0.70 cu ft → 2 × 80 lb bags (or 1 × 50 lb fast-set)
10 in diameter × 3 ft deep: ~1.64 cu ft → 3 × 80 lb bags
12 in diameter × 4 ft deep: ~3.14 cu ft → 6 × 80 lb bags
For fence posts, Quikrete Fast-Setting 50 lb bags (0.375 cu ft each) are specifically designed for this application — pour dry into the hole without pre-mixing.
Trusted product guides, standards, and references for planning your concrete pour.
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Quikrete Coverage & Yield Charts
Official Resource
Quikrete's official product selector and coverage calculator provides yield data for all 40 lb, 60 lb, and 80 lb premixed concrete, mortar, and specialty mix products — including post-mix, 5000, crack-resistant, and fiber-reinforced lines sold across the USA.
ACI 302.1R is the American Concrete Institute's authoritative guide for concrete floor and slab-on-grade construction in the USA, covering thickness, sub-base requirements, joint spacing, and pour volume best practices for both residential and commercial projects.
Sakrete's product line
includes High Strength 80 lb, Fast-Setting, and Pro-Mix concrete bags available at Home Depot, Lowe's, and Ace Hardware nationwide. Their product datasheets list exact yield per bag, water requirements, and strength ratings for all USA bag sizes.
Visit Sakrete.com