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Ganpat Metal provides this comprehensive online metal weight calculator for engineers,
fabricators, estimators, and procurement managers to calculate theoretical weights across
various product forms and alloy grades.
Calculations are based on standard
geometrical formulas and certified metallurgical alloy densities. For bulk procurement
pricing and mill test certificates, click the WhatsApp Inquiry button to connect directly
with our sales engineering desk.
Enter pipe outer diameter (OD), wall thickness (WT), length, and select the material grade to calculate theoretical weight.
Enter bar diameter (mm), length, and select the material grade to calculate round bar weight.
Enter across flats (AF in mm), length, and select the material grade to calculate hex bar weight.
Enter thickness (mm), width (mm), length (mm), and select material grade to calculate plate weight.
Enter width (mm), thickness/height (mm), length (mm), and select material grade to calculate flat bar weight.
Standard geometric formulas used to determine the theoretical weight of metal and alloy engineering products:
Weight = (OD - WT) × WT × 0.02466 × L
Where OD & WT are in mm, L in meters, and factor corresponds to steel density (7.85 g/cm³).
Weight = Dia² × 0.00617 × Length (m)
Or: π × (D / 2)² × Length × Density. Diameter in mm, result in kilograms.
Weight = AF² × 0.00680 × Length (m)
Where AF is the across flats measurement in mm, result in kilograms for steel.
Weight = Thk × Width × Length × Density
For steel: Thickness (mm) × Width (m) × Length (m) × 7.85 kg/m² per mm.
Weight = Width × Thk × Length × Density
Dimensions in mm divided by 10⁶ gives volume in m³, multiplied by alloy density.
1 kg = 2.20462 lbs | 1 MT = 1000 kg
1 Meter = 3.28084 Feet | 1 Inch = 25.4 Millimeters.
Densities used for precise metallurgical weight computations in accordance with ASTM and ISO standards:
| Alloy Family | Grades / Specifications | Density (kg/m³) | Density (g/cm³) | Relative Factor (vs CS) |
|---|---|---|---|---|
| Carbon Steel | ASTM A106, A53, IS 1239, IS 3589, ST52 | 7,850 kg/m³ | 7.85 g/cm³ | 1.000 |
| Alloy Steel | ASTM A335 / A182 P5, P9, P11, P22, P91, P92 | 7,850 kg/m³ | 7.85 g/cm³ | 1.000 |
| Austenitic Stainless Steel | SS 304, 304L, 304H | 7,930 kg/m³ | 7.93 g/cm³ | 1.010 |
| Molybdenum Stainless Steel | SS 316, 316L, 316Ti | 7,980 kg/m³ | 7.98 g/cm³ | 1.017 |
| High-Temp Stainless Steel | SS 310, 310S, 321, 347 | 7,920 – 7,980 kg/m³ | 7.92 – 7.98 g/cm³ | 1.010 – 1.017 |
| Duplex Stainless Steel | UNS S31803 / S32205 (2205) | 7,805 kg/m³ | 7.805 g/cm³ | 0.994 |
| Super Duplex Stainless Steel | UNS S32750 / S32760 (2507, Zeron 100) | 7,820 kg/m³ | 7.82 g/cm³ | 0.996 |
| Inconel 600 | UNS N06600 / W.Nr. 2.4816 | 8,470 kg/m³ | 8.47 g/cm³ | 1.079 |
| Inconel 625 | UNS N06625 / W.Nr. 2.4856 | 8,440 kg/m³ | 8.44 g/cm³ | 1.075 |
| Inconel 718 | UNS N07718 / W.Nr. 2.4668 | 8,190 kg/m³ | 8.19 g/cm³ | 1.043 |
| Hastelloy C276 | UNS N10276 / W.Nr. 2.4819 | 8,890 kg/m³ | 8.89 g/cm³ | 1.132 |
| Hastelloy C22 | UNS N06022 / W.Nr. 2.4602 | 8,690 kg/m³ | 8.69 g/cm³ | 1.107 |
| Monel 400 | UNS N04400 / W.Nr. 2.4360 | 8,800 kg/m³ | 8.80 g/cm³ | 1.121 |
| Monel K-500 | UNS N05500 / W.Nr. 2.4375 | 8,440 kg/m³ | 8.44 g/cm³ | 1.075 |
| Titanium Grade 1 & 2 | UNS R50250, UNS R50400 (CP Titanium) | 4,510 kg/m³ | 4.51 g/cm³ | 0.575 |
| Titanium Grade 5 | UNS R56400 (Ti-6Al-4V) | 4,430 kg/m³ | 4.43 g/cm³ | 0.564 |
| Tool Steel | AISI D2, H13, EN31 | 7,700 – 7,800 kg/m³ | 7.70 – 7.80 g/cm³ | 0.985 – 0.994 |