Concrete & Cement Cost Calculator

What's the Difference Between Concrete & Cement?

The words “concrete” and “cement” are often used interchangeably, however, they are two very different things. Concrete is a mixture of cement and other items, such as sand or gravel. Cement is an ingredient in concrete and is the “glue” that helps hold the mixture together. Once concrete hardens, it can be used to create stairs, sidewalks, landing pads, or other solid surfaces, as well as footers for decks.

How Much Is a Bag of Concrete?

Typically, concrete is sold in pre-mixed 60-lb. and 80-lb. bags. Most 60-lb. bags of concrete have a retail value of between $3.10 and $3.50, although you may be able to buy it cheaper in-bulk. An 80-lb. bag of concrete can cost between $3.50 and $4.00 per bag. However, you may be able to find it on sale for $3.00 or under, or get a discount if you purchase it in-bulk.

How Much is a Cubic Yard of Concrete?

When trying to calculate how much concrete you’ll need, think of your project in terms of cubic feet and cubic yards:

• 1 cubic yard = 27 cubic feet

With this formula in mind, you’ll be able to calculate just how much concrete or cement you’ll need for your project:

• One 60-lb bag of concrete gives you .45 cubic feet of concrete when mixed with 2.5 quarts of water.
  • In order to have enough concrete for one cubic foot, you’ll require 2.2 bags of 60-lb concrete. Since bags are only sold in whole (not half, or quarter) quantities, you’ll need to purchase three (3) 60-lb. bags for one cubic foot.
• One 80-lb bag of concrete yields .60 cubic feet when combined with 4 quarts of water.
  • If you’re purchasing 80-lb bags of concrete, you’ll need 1.66 bags of concrete. As before, since bags of concrete are only sold in whole quantities, you’ll need to purchase two (2) 80-lb. bags of concrete to form one cubic foot.