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`A = L * W `

Enter a value for all fields

The **Slab Area and Perimeter** calculator computes the surface area and perimeter of a rectangular slab.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**L**) Slab Length - (
**w**) Slab Width

**Slab Area and Perimeter (AnP):** The surface area of the slab is returned in square feet (ft^{2}) and perimeter in feet (ft). However, these can be automatically converted to compatible units via the pull-down menu.

The formulas for slab area and perimeter are:

A = L⋅W

P = 2⋅L + 2⋅W

where:

- A = Surface Area of Slab
- P = Perimeter of Slab
- L = Length of Slab
- W = Width of Slab

**Rebar Calculator**(Spanish Version:**Calculadora de Barras de Refuerzo**)**Weight of Any Volume of Concrete****Rebar and Concrete Volume and Weight in a Slab****Rebar Weight****Length of Rebar**needed for a slab.**Weight of Rebar**in a slab.**Weight, Volume of Concrete and Surface Area of a Concrete Slab****Surface Area**of a slab**Surface Area of Concrete Forms**.**Volume of Concrete**in a slab.**Water Needed for Concrete****Rebar and Concrete in a Slab****Length of Rebar in Grid****Weight of Rebar in Grid****Rebar in a Wall****Rebar in an Irregular Shaped Slab****Rebar in a Circular Slab****Rebar Lapping Length****Rebar Cost Estimate****Weight of Length of Rebar****Concrete Displaced by Rebar****Total Weight of a Slab with Rebar**