Calculate the number of
Portland Cement bags
that are required for
a project.
Portland Cement Bags
Entry Form
Using This Cement
Volume Calculator.
This calculator is based on
6 - 94 Lb. sacks of Portland
Cement per cubic yard
(3000psi).
Portland Cement
Bag Calculator
27 cubic feet equals
1 cubic yard.
Enter square feet of project.
Example: 200 cubic feet,
44.4 bags of cement.
Round off answer to next
even higher figures.
This calculator is intended for
approximate guidance.
Working with Concrete
Tips
Hand Mixing
Only use clean water, sand
and gravel.
Aim for a mix of 1 part cement,
2-1/4 part sand and 3 parts
aggregate.
Mix the dry cement and sand,
add water, mix, then add
aggregate, and more water
as needed.
Cement mix should look gray,
not brown, and water should
not be freely running on top.
Adjust the mix by adding
more water, cement or
sand as needed.
Portland Cement
Bag Calculator
Concrete must be used within
2 hours of mixing, the sooner
r the better.
Avoid over-working any poured
concrete, as this will weaken the
concrete.
Sand shrinks in volume when
water is added, so order a
little more than the dry volume.
Best time to work concrete
is early morning or late
afternoon, but be aware
there is a waiting time for
surface water to evaporate,
if you wait too long in the
afternoon to do the job, it
could end up late in the
evening, when you will be
toweling the concrete.
It takes a few weeks to for
concrete to reach 90 percent
of its final strength.
Concrete that cures too fast
will crack, scale, and flake,
and lack strength and
durability.
If the weather is windy or
very hot, cover the concrete
to prevent the quick evaporation,
which can cause cracks in
the concrete.