Concrete slab cost calculator
The concrete (material) cost for common slab footprints at the standard 4-inch thickness — delivered ready-mix vs pre-mix bags. Pick a size, or run your exact dimensions through the calculator. Labor, forms, and prep are extra.
8 × 8 ft slab
$109–$143 ready-mix
10 × 10 ft slab
$170–$224 ready-mix
10 × 12 ft slab
$204–$269 ready-mix
12 × 12 ft slab
$244–$323 ready-mix
12 × 16 ft slab
$326–$430 ready-mix
12 × 20 ft slab
$407–$538 ready-mix
16 × 20 ft slab
$543–$717 ready-mix
20 × 20 ft slab
$679–$896 ready-mix
20 × 24 ft slab
$815–$1,076 ready-mix
24 × 24 ft slab
$978–$1,291 ready-mix
24 × 30 ft slab
$1,222–$1,613 ready-mix
30 × 40 ft slab
$2,037–$2,689 ready-mix
40 × 60 ft slab
$4,074–$5,378 ready-mix