Rebar Quantity Calculator

1Main Rebar Parameters

Main rebar diameter d1

Common: 14/16/18/20 mm → 0.55/0.63/0.71/0.79 in

Number of main rebars n1

pcs

Main rebar length L1

Includes anchorage and hook length

2Stirrup Parameters

Stirrup diameter d2

Stirrup spacing s

Stirrup length per loop L2

Unfolded length of one stirrup loop (perimeter + hooks)

Foundation height (stirrup placement zone)

3Waste & Cost

Waste factor

Rebar unit price

$/short ton

Rebar Theoretical Weight per Foot (lb/ft)

Diameter	Weight/ft	Diameter	Weight/ft
0.31 in (Φ8)	0.26	0.71 in (Φ18)	1.34
0.39 in (Φ10)	0.41	0.79 in (Φ20)	1.66
0.47 in (Φ12)	0.60	0.87 in (Φ22)	2.00
0.55 in (Φ14)	0.81	0.98 in (Φ25)	2.59
0.63 in (Φ16)	1.06	1.10 in (Φ28)	3.25