The calculator
Slab Area (sq Ft) → Steel (kg), instantly.
Formula: 1 Slab Area (sq ft) = 3.500000 Steel (kg)

What is this calculator?

Calculate steel required for roof slab. Approximate 3.5 kg of steel per sq ft for standard residential roof slabs.

The conversion formula
1 Slab Area (sq ft) = 3.500000 Steel (kg)

Quick reference

1 Slab Area (sq ft)
3.50 Steel (kg)
2 Slab Area (sq ft)
7.00 Steel (kg)
5 Slab Area (sq ft)
17.50 Steel (kg)
10 Slab Area (sq ft)
35.00 Steel (kg)
¼ Slab Area (sq ft)
0.8750 Steel (kg)
½ Slab Area (sq ft)
1.75 Steel (kg)
¾ Slab Area (sq ft)
2.63 Steel (kg)
100 Slab Area (sq ft)
350.00 Steel (kg)

Calculate the steel reinforcement needed for your roof slab. Enter slab area in sq ft. Standard residential slab requires approximately 3.5 to 4 kg of steel per sq ft. Get total steel weight in kg and number of TMT bars needed.

Frequently asked questions

How many kg of steel per sq ft for roof slab?

Standard residential roof slab requires approximately 3.5 to 4 kg of steel per sq ft.

Which TMT bar size for roof slab?

Typically 8mm and 10mm TMT bars are used for residential roof slabs.

How many TMT bars in 1 kg?

1 kg of 10mm TMT bar = approximately 1.13 meters in length.