Calculate the quantity of cement, sand, and gravel for a specific concrete mix.
Project Details
cu ft
lbs
Material List
Enter project details to see material list
About this calculator
Overview
Concrete is a mixture of cement, sand (fine aggregate), and gravel (coarse aggregate). The ratio of these components determines the strength and durability of the finished structure.
💡
Pro Tips
Standard concrete (1:2:4) is ideal for most residential footings and slabs.
Always use clean, potable water for mixing. Impurities in the water can weaken the concrete.
The dry factor (1.54) accounts for the volume lost when voids between aggregate particles are filled with cement and water.
!
Fun Facts
"When you mix dry concrete components with water, the total volume shrinks by about 30%! That's why we use a 'Dry Factor' of 1.54 in our calculations."
"Concrete is the most used man-made material in the world, second only to water in terms of total consumption."
"The Pantheon in Rome is the world's largest unreinforced concrete dome, built nearly 2,000 years ago."
