Concrete Slab & Construction Cost Estimator

Calculate concrete slab wet/dry volume, cement bag requirement, sand (cu.ft), aggregate (cu.ft), and total material cost with local unit prices.

Slab Dimensions

Mix Ratio & Pricing

About Concrete Slab & Construction Cost Estimator

Concrete Slab & Construction Cost Estimator — Accurately estimate wet and dry concrete volume, required cement bags, sand volume (cu. ft), aggregate volume (cu. ft), and total material cost for house slab casting.

How to use the Concrete Slab Estimator

  1. Enter slab length, width, and thickness in feet or meters.
  2. Select the concrete mix ratio (M20 1:1.5:3, M15 1:2:4, M25 1:1:2).
  3. Input local unit market prices for cement bag, sand, and aggregate.
  4. Click Calculate Material & Cost to view itemized breakdown table.

FAQs

Why is dry volume factor 1.54 used in concrete estimation?
When water is added to dry cement, sand, and aggregate, air voids compress. A factor of 1.54 converts wet concrete volume into equivalent dry materials needed.
How many cement bags are in 1 cubic meter of M20 concrete?
For M20 concrete mix (1:1.5:3), approximately 8.0 to 8.4 bags of cement (50 kg each) are required per cubic meter of wet concrete.

About Concrete Slab & Construction Cost Estimator

Concrete Slab & Construction Cost Estimator — Accurately estimate wet and dry concrete volume, required cement bags, sand volume (cu. ft), aggregate volume (cu. ft), and total material cost for house slab casting.

How to use the Concrete Slab Estimator

  1. Enter slab length, width, and thickness in feet or meters.
  2. Select the concrete mix ratio (M20 1:1.5:3, M15 1:2:4, M25 1:1:2).
  3. Input local unit market prices for cement bag, sand, and aggregate.
  4. Click Calculate Material & Cost to view itemized breakdown table.

FAQs

Why is dry volume factor 1.54 used in concrete estimation?
When water is added to dry cement, sand, and aggregate, air voids compress. A factor of 1.54 converts wet concrete volume into equivalent dry materials needed.
How many cement bags are in 1 cubic meter of M20 concrete?
For M20 concrete mix (1:1.5:3), approximately 8.0 to 8.4 bags of cement (50 kg each) are required per cubic meter of wet concrete.