Rebar Calculator

Calculate main bar and stirrup quantities — count, spacing, weight, and splice lengths for reinforced concrete design — free construction tool

Rebar Parameters

Bar Diameter

Number of Bars

Member Length (mm)

Cover (mm)

Lap Splice Factor (×d)

Typical: 25d to 40d

Hook Type

Nominal Dia.

12.7 mm

Area

126.7 mm\u00B2

Unit Weight

0.995 kg/m

Perimeter

39.9 mm

Results

Total Weight

58.90 kg

Total Length

59.20 m

Single Bar Length

5.920 m

(5920 mm)

Lap Splice Length

508 mm

Development Length

508 mm

Total Area

1267.0 mm\u00B2

Rebar Specs (JIS G 3112)

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