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Steel TMT Bar Calculator
TMT Bar Diameter
Selected: 12mm TMT Bar
Slabs, beams, columns
Weight: 0.888 kg per meter
Bar Length
Total: 10 bars × 12 feet
12mm diameter TMT bars
Total Length
Meters
36.58 m
Feet
120 ft
Per Bar Length
12 feet each
Weight Calculation
Weight per Meter
0.889 kg/m
Total Weight (kg)
32.51 kg
Total Weight (Tons)
0.033 tons
Cost Estimation
Estimated Total Cost
₹2,114
@ ₹65 per kg (average market rate)
Cost per bar: ₹211.4
Quick Summary
Bar Diameter:12mm TMT
Length per Bar:12 feet
Number of Bars:10 bars
Total Length:36.58 m
Total Weight:32.51 kg
Total Cost:₹2,114
Steel Requirements Breakdown
Proportional representation of steel requirements
How Steel TMT Calculation Works
Weight Calculation Formula
TMT bar weight is calculated using the standard formula: Weight = (D² ÷ 162) × Lwhere D = diameter in mm, L = length in meters.
Weight per meter = (12² ÷ 162) = 0.889 kg/m
Total weight = 0.889 kg/m × 36.58 m = 32.51 kg
Length Calculation
Total length is calculated by multiplying individual bar length with number of bars.
Per bar: 12 feet
Total bars: 10
Total length: 10 × 12 feet = 36.58 meters
Cost Estimation
Cost is estimated at ₹65 per kg (average market rate in India). Actual prices vary by brand, grade, and location.
32.51 kg × ₹65/kg = ₹2,114
TMT Bar Weight Standards
8mm
0.395 kg/m
10mm
0.617 kg/m
12mm
0.888 kg/m
16mm
1.58 kg/m
20mm
2.469 kg/m
25mm
3.854 kg/m
32mm
6.313 kg/m
Pro Tips for TMT Steel
Bar Selection Guide:
- • 8mm & 10mm: Stirrups, ties, secondary reinforcement
- • 12mm: Most common for slabs, small beams
- • 16mm & 20mm: Main reinforcement in beams/columns
- • 25mm & 32mm: Heavy structural elements
Practical Considerations:
- • Add 2-5% extra for cutting waste
- • Standard lengths: 12m (40 feet) in India
- • Check ISI mark for quality assurance
- • Consider transportation and handling costs
Current Calculation Summary:
Diameter: 12mm TMT
Length per bar: 12 feet
Number of bars: 10
Total length: 36.58 m
Total weight: 32.51 kg
Estimated cost: ₹2,114
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