Concrete Floor Weight Capacity Calculator

Thickness of Concrete (in inches): Area of the Floor (in square feet):

Here’s a table summarizing typical weight capacities for various configurations of concrete floors:

Concrete Strength (psi)	Slab Thickness (inches)	Reinforcement Type	Weight Capacity (lbs/sq ft)
3000	4	No reinforcement	150
3000	4	Light reinforcement (rebar or mesh)	200
3000	6	No reinforcement	300
3000	6	Light reinforcement	400
4000	4	No reinforcement	200
4000	4	Light reinforcement	250
4000	6	No reinforcement	400
4000	6	Light reinforcement	500
5000	4	No reinforcement	250
5000	4	Light reinforcement	300
5000	6	No reinforcement	500
5000	6	Light reinforcement	600