CONCRETE PLANNING TOOL
Shed Slab Calculator
Calculate concrete quantity for a shed pad or small outbuilding slab.
Use the concrete calculator →Quick answer
Example: a 10 × 12 ft pad at 4 inches thick is about 1.48 cubic yards before extra material.
Use actual project measurements and local pricing for your final estimate.
Measure the pad
Use the actual slab dimensions rather than the nominal shed size if the concrete pad extends beyond the walls.
Check project requirements
Thickness, base, reinforcement and edge details can change material quantity. Follow the design requirements for the structure.
Calculate your project
Get cubic yards, cubic feet and bag quantities.
Planning estimate only. Verify dimensions, product yields, local requirements and structural specifications before ordering or pouring concrete.