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Rebar Calculator

Build a reinforcement quantity check from bar lists — companion to the steel weight tool for house and RCC work.

Estimates only — not professional financial, medical, legal or engineering advice. Read full disclaimer.

Result

Fill in the form and click Calculate to see your result here.

How it's calculated

Sum of piece weights using the same unit-weight approach as TMT tables, aggregated across bar marks you enter.

Example

Example: Rebar Calculator

Inputs

  • Length: 12
  • Diameter Mm: 12
  • Quantity: 10

Outputs

  • Weight Per Meter: 0.889
  • Total Length: 120
  • Total Weight: 106.67

This example uses typical sample values. Adjust the inputs above to see how the results change for your own numbers.

About this calculator

Where the steel calculator is a quick kg from diameter, this rebar tool is aimed at taking off a bar list (counts, lengths, diameters) closer to a simplified BBS.

It still is not a licensed structural design. Use the engineer’s schedule when they conflict. Pair with concrete volume so kg/m³ sits in a believable band for the member type.

Frequently Asked Questions

kg/m = d²/162 (d in mm), total weight = kg/m × bar length (m) × number of bars. Same IS-style unit weight as the steel calculator.
Matches a common Nepal stock length. Change diameter for 8/10/16/20 mm as drawn.
Increase “bar length” to include them. The engine does not auto-add 9d or 16d hooks.
Each lap is extra running metres. Count laps in quantity or length; they are not inferred.
162 is the site-rounded constant. Mill certificates may quote a slightly different kg/m.
Run once per diameter/shape. Stirrup length is the cut length, not the room size.
No. It is mass from length × diameter × count.
Mass of steel is still d²/162; coating weight is extra and not added here.
Schema min is 6 mm (typical stirrup). Do not enter 4 mm “binding wire” as rebar.
Rebar is the simple qty tool; steel adds wastage % and optional NPR/kg.

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