An exact calculation of the weight of MS Plates is an essential factor for structural steel fabrication, pressure vessel design, freight calculation, and budgetary considerations. If you have to determine crane lift capacities, calculate loading capabilities for transportation, or check invoices’ weights with regard to theoretical mill tolerances, then accurate weight calculations will be necessary to avoid any problems on the construction site. This online interactive guide includes an MS Plate Weight Calculator, the derivation of mathematical formulas, a complete MS Plate Weight Table in kg (per sq. meters and per individual sheet sizes), manufacturer gauge tables, and structural designs for various grades such as IS 2062, ASTM A36, EN 10025-2 S275/S350, and JIS G3101 SS400.
MS Plate Weight Calculator
Use the tool below to instantly calculate the weight of Mild Steel, Galvanized Steel, Stainless Steel, Carbon Steel, and Alloy plates. Select your input dimensions, material density, and quantity.
MS Plate Weight Chart (kg/m² and Standard Sheet Sizes)
The reference table below provides theoretical weights for standard mild steel plate thicknesses across common commercial sheet sizes. All calculations assume a carbon steel density of 7,850 kg/m³.
|
Thickness (mm) |
Weight per Sq. Meter (kg/m²) |
4 ft × 8 ft Sheet (1220 × 2440 mm) (kg) |
5 ft × 20 ft Plate (1500 × 6000 mm) (kg) |
2.5 m × 6.0 m Plate (2500 × 6000 mm) (kg) |
|
3.0 mm |
23.55 kg |
70.10 kg |
211.95 kg |
353.25 kg |
|
4.0 mm |
31.40 kg |
93.47 kg |
282.60 kg |
471.00 kg |
|
5.0 mm |
39.25 kg |
116.84 kg |
353.25 kg |
588.75 kg |
|
6.0 mm |
47.10 kg |
140.20 kg |
423.90 kg |
706.50 kg |
|
8.0 mm |
62.80 kg |
186.94 kg |
565.20 kg |
942.00 kg |
|
10.0 mm |
78.50 kg |
233.68 kg |
706.50 kg |
1,177.50 kg |
|
12.0 mm |
94.20 kg |
280.41 kg |
847.80 kg |
1,413.00 kg |
|
16.0 mm |
125.60 kg |
373.89 kg |
1,130.40 kg |
1,884.00 kg |
|
20.0 mm |
157.00 kg |
467.36 kg |
1,413.00 kg |
2,355.00 kg |
|
25.0 mm |
196.25 kg |
584.20 kg |
1,766.25 kg |
2,943.75 kg |
|
32.0 mm |
251.20 kg |
747.78 kg |
2,260.80 kg |
3,768.00 kg |
|
40.0 mm |
314.00 kg |
934.73 kg |
2,826.00 kg |
4,710.00 kg |
|
50.0 mm |
392.50 kg |
1,168.41 kg |
3,532.50 kg |
5,887.50 kg |
Manufacturers’ Standard Gauge Conversion Table
|
Gauge Number (MSG) |
Nominal Thickness (in) |
Nominal Thickness (mm) |
Weight per Sq. Meter (kg/m²) |
Weight per Sq. Foot (lbs/ft²) |
|
Gauge 10 |
0.1345 in |
3.416 mm |
26.82 kg/m² |
5.49 lbs/ft² |
|
Gauge 11 |
0.1196 in |
3.038 mm |
23.85 kg/m² |
4.89 lbs/ft² |
|
Gauge 12 |
0.1046 in |
2.657 mm |
20.86 kg/m² |
4.27 lbs/ft² |
|
Gauge 14 |
0.0747 in |
1.897 mm |
14.89 kg/m² |
3.05 lbs/ft² |
|
Gauge 16 |
0.0598 in |
1.519 mm |
11.92 kg/m² |
2.44 lbs/ft² |
|
Gauge 18 |
0.0478 in |
1.214 mm |
9.53 kg/m² |
1.95 lbs/ft² |
|
Gauge 20 |
0.0359 in |
0.912 mm |
7.16 kg/m² |
1.47 lbs/ft² |
|
Gauge 22 |
0.0299 in |
0.759 mm |
5.96 kg/m² |
1.22 lbs/ft² |
MS Plate Weight Formulas & Step-by-Step Derivations
The standard physical formula used to derive the weight (W) of any solid rectangular metal plate is based on fundamental volumetric density:
Weight(W)=Volume(V)Density()
Weight(W)=Length(L)Width(W)Thickness(T)Density()
For structural carbon steel and mild steel, the standard nominal mass density () recognized by ASME, IS, EN, and ISO standards is 7,850 kg/m³ (or 7.85 g/cm³).
Standard Metric Formula (Inputs in Meters)
When plate dimensions are measured directly in meters (m):
Weight(kg)=Length(m)Width(m)Thickness(m)7,850kg/m³
Worked Example 1 (Standard Structural Plate):
Calculate the weight of a mild steel plate measuring 2.5 meters in length, 1.25 meters in width, and 10 mm (0.010 m) in thickness.
Length=2.5m,Width=1.25m,Thickness=0.010m
Weight=2.5m1.25m0.010m7,850kg/m³
Weight=0.03125m³7,850kg/m³=245.3125kg
Simplified Mill Formula (Thickness in Millimeters)
In commercial steel stocking and field engineering, dimensions are commonly expressed as Length (L, meters), Width (W, meters), and Thickness (T, millimeters). Using the unit factor:
Weight(kg)=Length(m)Width(m)Thickness(mm)7.85
Derivation of the 7.85 Constant:
Weight=L(m)W(m)T(mm)10007,850kg/m³
Weight=L(m)W(m)T(mm)7,8501000
Weight=L(m)W(m)T(mm)7.85
Worked Example 2 (Quick Field Calculation):
Calculate the weight of a 6 mm thick MS sheet measuring 6.0 m long by 1.5 m wide.
Weight=6.0m1.5m6mm7.85=423.90kg
Imperial Formula (Inputs in Inches)
When using Imperial units (inches):
Weight(lbs)=Length(in)Width(in)Thickness(in)0.2833lbs/in³
(Density of Mild Steel in Imperial units = 0.2833lbs/in³ or 490lbs/ft³)
MS Plate Weight Calculator
| Category | Parameter / Metric | Value |
| Inputs | Dimensions (L × W × T) | 2000 mm × 1000 mm × 10 mm |
| Inputs | Material Grade & Density | Mild Steel (7850 kg/m³) |
| Geometry | Calculated Volume (per piece) | 0.020000 m³ |
| Metrics | Area Weight Ratio | 78.50 kg/m² |
| Results | Single Piece Weight | 157.00 kg |
| Inputs | Quantity | 1 pcs |
| Results | Total Weight (Kilograms) | 157.00 kg |
| Results | Total Weight (Metric Tonnes) | 0.157 T |
MS Plate Weight Formula: How to Calculate Mild Steel Plate Weight
The foundation of every steel calculation is the basic volumetric mass relationship: Weight = Volume × Density. For mild steel plate weight calculations, standard industry specifications fix the density at 7,850 kg/m³ (or 7.85 g/cm³).
MS PLATE WEIGHT CHART
1. The Standard Base Formula (Meters)
Weight (kg) = Length (m) × Width (m) × Thickness (m) × 7850 kg/m³
2. The Millimetre Shortcut Formula
Because shop drawings and mill cut sheets specify dimensions in millimetres, converting every measurement to metres can cause decimal errors. Use this simplified formula:
Weight (kg) = [Length (mm) × Width (mm) × Thickness (mm) × 7.85] / 1,000,000
Note: The division by 1,000,000 accounts for converting cubic millimetres to cubic metres while incorporating the 7.85 kg/m³ density factor.
3. The Square Metre Rule of Thumb
For fast mental math on job sites, remember that 1 mm of mild steel plate thickness equals exactly 7.85 kg per m².
Weight (kg/m²) = Thickness (mm) × 7.85
4. Imperial Formula (Inches & Pounds)
Weight (lb) = Length (in) × Width (in) × Thickness (in) × 0.2836 lb/in³
Weight (lb/ft²) ≈ Thickness (in) × 40.8
MS Plate Weight Examples by Size
| Plate Specifications | Calculation Method & Working | Theoretical Weight |
| 2,000 × 1,000 × 10 mm | 2m1m0.010m7,850kg/m3 | 157.00 kg |
| 2,500 × 1,250 × 6 mm | (2,5001,25067.85)/1,000,000 | 147.19 kg |
| 3,000 × 1,500 × 12 mm | (3,0001,500127.85)/1,000,000 | 423.90 kg |
| 25 pieces of 2,500 × 1,250 × 6 mm | 147.19kg25pieces=3,679.7kg | 3.68 Tonnes |
| 4 × 8 ft × 1/4 in (48 × 96 × 0.25 in) | 48in96in0.25in0.2836lb/in3=326.7lb | 148.19 kg |
| Cost Estimate Illustration (147.19 kg) | 147.19kgINR60/kg | ~ INR 8,831 |
MS Plate Weight Chart: kg per m² and per Sheet
| Thickness (mm) | Weight (kg per m²) | Weight (kg per ft²) |
| 1.6 | 12.56 | 1.17 |
| 2.0 | 15.70 | 1.46 |
| 3.0 | 23.55 | 2.19 |
| 4.0 | 31.40 | 2.92 |
| 5.0 | 39.25 | 3.65 |
| 6.0 | 47.10 | 4.38 |
| 8.0 | 62.80 | 5.83 |
| 10.0 | 78.50 | 7.29 |
| 12.0 | 94.20 | 8.75 |
| 16.0 | 125.60 | 11.67 |
| 20.0 | 157.00 | 14.59 |
| 25.0 | 196.25 | 18.23 |
| 32.0 | 251.20 | 23.34 |
| 40.0 | 314.00 | 29.17 |
| 50.0 | 392.50 | 36.46 |
| 60.0 | 471.00 | 43.76 |
| 75.0 | 588.75 | 54.70 |
| 100.0 | 785.00 | 72.93 |
Weight per Single Plate for Common Trade Sizes (kg)
| Thickness (mm) | 1,250 × 2,500 mm (4 × 8 ft approx.) | 1,500 × 3,000 mm (5 × 10 ft approx.) | 2,000 × 6,000 mm (6.5 × 20 ft approx.) |
| 1.6 | 39.2 | 56.5 | 150.7 |
| 2.0 | 49.1 | 70.6 | 188.4 |
| 3.0 | 73.6 | 106.0 | 282.6 |
| 4.0 | 98.1 | 141.3 | 376.8 |
| 5.0 | 122.7 | 176.6 | 471.0 |
| 6.0 | 147.2 | 211.9 | 565.2 |
| 8.0 | 196.2 | 282.6 | 753.6 |
| 10.0 | 245.3 | 353.2 | 942.0 |
| 12.0 | 294.4 | 423.9 | 1,130.4 |
| 16.0 | 392.5 | 565.2 | 1,507.2 |
| 20.0 | 490.6 | 706.5 | 1,884.0 |
| 25.0 | 613.3 | 883.1 | 2,355.0 |
| 32.0 | 785.0 | 1,130.4 | 3,014.4 |
| 40.0 | 981.2 | 1,413.0 | 3,768.0 |
| 50.0 | 1,226.6 | 1,766.2 | 4,710.0 |
Weight by Width (kg per Running Metre Length)
| Thickness (mm) | Width 1,250 mm | Width 1,500 mm | Width 2,000 mm |
| 6.0 | 58.9 kg/m | 70.6 kg/m | 94.2 kg/m |
| 8.0 | 78.5 kg/m | 94.2 kg/m | 125.6 kg/m |
| 10.0 | 98.1 kg/m | 117.8 kg/m | 157.0 kg/m |
| 12.0 | 117.7 kg/m | 141.3 kg/m | 188.4 kg/m |
| 16.0 | 157.0 kg/m | 188.4 kg/m | 251.2 kg/m |
| 20.0 | 196.2 kg/m | 235.5 kg/m | 314.0 kg/m |
| 25.0 | 245.3 kg/m | 294.4 kg/m | 392.5 kg/m |
Manufacturers’ Standard Gauge Conversion Table (Steel Sheet)
| Gauge No. | Thickness (in) | Thickness (mm) | Unit Weight (kg per m²) |
| 7 | 0.1793 | 4.55 | 35.8 |
| 8 | 0.1644 | 4.18 | 32.8 |
| 10 | 0.1345 | 3.42 | 26.8 |
| 12 | 0.1046 | 2.66 | 20.9 |
| 14 | 0.0747 | 1.90 | 14.9 |
| 16 | 0.0598 | 1.52 | 11.9 |
| 18 | 0.0478 | 1.21 | 9.5 |
| 20 | 0.0359 | 0.91 | 7.2 |
| 22 | 0.0299 | 0.76 | 6.0 |
| 24 | 0.0239 | 0.61 | 4.8 |
MS Plate Grades: Does Grade Change the Weight?
A common question among estimators is whether structural grade affects total plate weight. Steel grade does not change plate weight. Altering carbon content or alloying additions shifts yield strength and tensile properties, but has a negligible impact on physical density.
Standard Mild Steel Grade Designations
| Region / Standard | Common Grade Designations | Density (kg/m³) |
| India (BIS) | IS 2062 (E250 Grade A, B, C / E300 / E350) | 7,850 |
| United States (ASTM) | ASTM A36 | 7,850 |
| Europe (EN) | EN 10025-2 (S235JR / S275JR / S355JR) | 7,850 |
| Japan (JIS) | JIS G3101 SS400 | 7,850 |
Ordering Carbon Steel Products from Solitaire Overseas
Solitaire Overseas is a premier ISO-certified manufacturer, exporter, and stockist based in Mumbai, India. We supply premium carbon steel products, high-pressure carbon steel pipes, and specialty alloy plates globally. Every shipment includes certified mill test certificates detailing verified physical and chemical analysis.
Conclusion
Calculating mild steel plate mass requires only three physical dimensions and the standard mild steel density of 7,850kg/m3. Whether you rely on our interactive ms plate weight calculator, our quick unit conversion charts, or manual hand calculations, verifying theoretical weights ensures accurate project costing, safe rigging, and efficient freight management. Need reliable material supply or specialized project pricing? Reach out to Solitaire Overseas to request a quote for your upcoming structural steel requirements.
