Question 1

How many 60lb bags of concrete do I need?

Accepted Answer

Each 60lb bag yields 0.45 cubic feet. Divide your total cubic feet by 0.45 to get the number of 60lb bags needed. For example, 27 cubic feet (1 yard) needs 60 bags.

Question 2

How many 80lb bags per cubic yard?

Accepted Answer

It takes 45 bags of 80lb concrete mix to fill one cubic yard. Each 80lb bag yields 0.60 cubic feet (27 ÷ 0.60 = 45).

Question 3

What size bag of concrete should I buy?

Accepted Answer

80lb bags offer the best value per cubic foot. 60lb bags are easier to handle for one person. 40lb bags are good for small patches and limited-mobility situations.

Question 4

Is bagged concrete cheaper than ready-mix?

Accepted Answer

For small pours under 1 cubic yard, bagged concrete is usually cheaper because you avoid delivery and short-load fees. For larger pours, ready-mix concrete is significantly more cost-effective.

Question 5

How much water per bag of concrete?

Accepted Answer

A 60lb bag needs about 1.5 quarts of water. An 80lb bag needs about 2 quarts. Add water gradually for best results — too much water weakens the final mix.

Question 6

Can I mix concrete bags by hand?

Accepted Answer

Yes, but it's hard work. A paddle mixer attachment on a drill is much easier. For 5+ bags, rent a barrel mixer to save time and ensure thorough mixing.

Question 7

What is Quikrete vs Sakrete?

Accepted Answer

Both are quality concrete bag brands. Quikrete is the most widely available nationally. Sakrete is also common. Both produce comparable results for residential projects.

Question 8

How long does bagged concrete take to set?

Accepted Answer

Standard bagged concrete sets firm in 24–48 hours and reaches full cure strength in 28 days. Quikrete Fast-Setting Concrete sets in 20–40 minutes and is ideal for fence posts.

Bag Size	Yield	Bags/yd³	Approx. Price	Best For
40 lb	0.30 ft³	90 bags	~$4.50	Small patches, limited mobility
60 lb	0.45 ft³	60 bags	~$5.98	Solo work, walkways, fence posts
80 lb	0.60 ft³	45 bags	~$7.28	Slabs, driveways — best value

How Many Bags of Concrete?

Concrete Bag Calculator

Bags Needed by Size

Concrete Bags FAQ