Construction Calculator - Concrete and Masonry

Concrete Weight Calculator

Estimate concrete weight from dimensions and density.

Reviewed: August 26, 2026

Calculate Concrete Weight

For the Concrete Weight Calculator, enter length, width, thickness, material density, and price per pound. It multiplies rectangular volume by the entered material density and reports pounds, short tons, and optional cost per pound.

Construction measuring tools arranged beside a residential building project

Formula used

Weight = rectangular volume × entered density

Concrete Weight Calculator measurement plan showing Length feet, Width feet, Thickness inches

Worked concrete weight example

Concrete Weight Calculator example: 8.5 ft × 1.6 ft × (4 in ÷ 12) = 4.53 ft³. At the entered 150 lb/ft³, estimated weight is 680 lb (0.34 short tons).

Use the weight for planning

Use pounds or short tons for preliminary handling and load conversations, then rely on mix submittals and drawings for final dead load.

Concrete density is a project assumption

Normal-weight, lightweight, heavyweight, fresh, cured, reinforced, and air-entrained concrete do not all share one density. The tool multiplies a rectangular gross volume by the entered pounds per cubic foot and does not subtract reinforcement or voids. Use a mix submittal or other project-specific density when weight affects handling or structure.

Why scale or supplier weight may differ

Lightweight or heavyweight aggregate, reinforcement, moisture, voids, mix proportions, and actual geometry change total weight.

Questions specific to this calculation

Which density belongs in a concrete weight estimate?

Enter the concrete element's rectangular dimensions and a project-specific unit weight; the default is only a planning value for normal-weight material.