10x10 Concrete Slab Calculator

1. 1Enter slab thickness (in).
2. 2Enter waste factor (%).
3. 3Read your ready-mix needed on the right — it updates as you type.
4. 4Hit Share to keep the scenario or send it to someone.

About this calculator

A 10x10 slab is one of the most commonly poured concrete pads — sized right for a storage shed, a small patio, or an AC condenser pad — and the fixed 100 square foot footprint makes it worth having dedicated math rather than re-deriving cubic yards every time. This calculator locks in the 10-foot by 10-foot footprint and lets you adjust only the thickness (4 inches is standard for sheds and patios, 5-6 inches if it'll see vehicle weight) and waste factor, then returns both the ready-mix cubic yards to order and the equivalent 80lb bag count if you're hand-mixing instead. Because the area is fixed at 100 square feet, the only variable driving total volume is thickness, so this tool doubles as a quick reference: every extra inch of slab thickness adds roughly 0.31 cubic yards across the full 10x10 footprint. That's useful when deciding whether to upgrade from a 4-inch to a 5-inch slab for a heavier shed or small vehicle, since the incremental concrete cost is easy to see instantly.

What each field means

FAQ

Accuracy and limitations

• Estimates assume standard, average conditions — local rules, pricing, and materials vary.
• Results are rounded for readability; add a buffer before ordering, booking, or committing.
• Double-check anything with a real cost attached against a local quote.