Rebar Quantity & Takeoff Calculator

Estimate reinforcement for any area quickly. Enter the area and grid spacing, and the tool returns the steel density in kg/m² and kg/ft² plus the total weight — ideal for fast take-offs.

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How to use: Rebar Quantity & Takeoff Calculator

Enter the area to be reinforced.
Set the grid spacing (both ways).
Pick the bar size for kg/m² and the total.

Formula

Bar length per m² = 2 ÷ spacing(m). Weight/m² = that × kg/m. Total = weight/m² × area.

See the full rebar weight chart (kg/m & lb/ft) →

Rebar Quantity & Takeoff Calculator — FAQ

How much rebar per square foot?

It depends on spacing and bar size; the tool gives kg/ft² for your inputs.

How do you do a rebar takeoff?

Estimate bar length per unit area from the spacing, then multiply by area and unit weight.