Stainless steel weight calculator
Work out the theoretical weight of stainless steel sheet, coil, round and hexagon bar, flat bar, angle and tube from their dimensions. Choose 304, 316, 310S or 321 (1.4541) from the grade list and the calculation uses that grade’s density.
Calculate the weight from the size, or the number of sheets needed for a target weight. Your selections are added to the quote message automatically.
Size: 2 × 1000 × 2000 mm, quantity: 1 (theoretical ~31.60 kg)
How is stainless steel weight calculated?
Weight is volume multiplied by density. With all dimensions in millimetres, the result in kilograms is (ρ: density in g/cm³; 7.9 for 304; 8.0 for 316):
- Sheet, strip and flat bar: thickness × width × length × ρ ÷ 1,000,000
- Round bar: 0.7854 × diameter² × length × ρ ÷ 1,000,000
- Hexagon bar: 0.866 × across flats² × length × ρ ÷ 1,000,000
- Tube and bush: 3.1416 × (outside diameter − wall) × wall × length × ρ ÷ 1,000,000
- Angle: (leg A + leg B − thickness) × thickness × length × ρ ÷ 1,000,000
Example: a 2 × 1000 × 2000 mm 304 stainless steel sheet = 2 × 1000 × 2000 × 7.9 ÷ 1,000,000 = 31.6 kg.
Stainless steel weight tables
Values are theoretical weights per metre (for sheet, per m² and per full sheet).
Stainless steel sheet weight table
Calculated for 304 (7.9 g/cm³); values for 316 (8.0 g/cm³) are about 1.3 % higher. The sheet sizes shown are common standard sizes; the supplied size is agreed to order.
| Thickness | kg/m² | 1000 × 2000 mm sheet | 1250 × 2500 mm sheet | 1500 × 3000 mm sheet |
|---|---|---|---|---|
| 0.5 mm | 3.95 | 7.9 kg | 12.3 kg | 17.8 kg |
| 0.8 mm | 6.32 | 12.6 kg | 19.8 kg | 28.4 kg |
| 1 mm | 7.90 | 15.8 kg | 24.7 kg | 35.5 kg |
| 1.2 mm | 9.48 | 19.0 kg | 29.6 kg | 42.7 kg |
| 1.5 mm | 11.85 | 23.7 kg | 37.0 kg | 53.3 kg |
| 2 mm | 15.80 | 31.6 kg | 49.4 kg | 71.1 kg |
| 2.5 mm | 19.75 | 39.5 kg | 61.7 kg | 88.9 kg |
| 3 mm | 23.70 | 47.4 kg | 74.1 kg | 106.7 kg |
| 4 mm | 31.60 | 63.2 kg | 98.8 kg | 142.2 kg |
| 5 mm | 39.50 | 79.0 kg | 123.4 kg | 177.8 kg |
| 6 mm | 47.40 | 94.8 kg | 148.1 kg | 213.3 kg |
| 8 mm | 63.20 | 126.4 kg | 197.5 kg | 284.4 kg |
| 10 mm | 79.00 | 158.0 kg | 246.9 kg | 355.5 kg |
| 12 mm | 94.80 | 189.6 kg | 296.3 kg | 426.6 kg |
| 15 mm | 118.50 | 237.0 kg | 370.3 kg | 533.3 kg |
| 20 mm | 158.00 | 316.0 kg | 493.8 kg | 711.0 kg |
Stainless steel tube weight table
Calculated for 304 (7.9 g/cm³) and 316 (8.0 g/cm³). Sizes are examples; tube sizes are agreed to order.
| OD × wall | 304 · kg/m | 316 · kg/m |
|---|---|---|
| Ø10 × 1 mm | 0.223 | 0.226 |
| Ø12 × 1 mm | 0.273 | 0.276 |
| Ø16 × 1 mm | 0.372 | 0.377 |
| Ø16 × 1.5 mm | 0.540 | 0.547 |
| Ø20 × 1.5 mm | 0.689 | 0.697 |
| Ø20 × 2 mm | 0.893 | 0.905 |
| Ø25 × 1.5 mm | 0.875 | 0.886 |
| Ø25 × 2 mm | 1.14 | 1.16 |
| Ø30 × 2 mm | 1.39 | 1.41 |
| Ø33.7 × 2 mm | 1.57 | 1.59 |
| Ø38 × 1.5 mm | 1.36 | 1.38 |
| Ø42.4 × 2 mm | 2.01 | 2.03 |
| Ø48.3 × 2 mm | 2.30 | 2.33 |
| Ø51 × 1.5 mm | 1.84 | 1.87 |
| Ø60.3 × 2 mm | 2.89 | 2.93 |
| Ø76.1 × 2 mm | 3.68 | 3.72 |
| Ø88.9 × 3 mm | 6.40 | 6.48 |
| Ø114.3 × 3 mm | 8.29 | 8.39 |
Stainless steel round bar weight table
Calculated for 304 (7.9 g/cm³) and 316 (8.0 g/cm³).
| Diameter | 304 · kg/m | 316 · kg/m |
|---|---|---|
| Ø3 mm | 0.056 | 0.057 |
| Ø4 mm | 0.099 | 0.101 |
| Ø5 mm | 0.155 | 0.157 |
| Ø6 mm | 0.223 | 0.226 |
| Ø8 mm | 0.397 | 0.402 |
| Ø10 mm | 0.620 | 0.628 |
| Ø12 mm | 0.893 | 0.905 |
| Ø14 mm | 1.22 | 1.23 |
| Ø15 mm | 1.40 | 1.41 |
| Ø16 mm | 1.59 | 1.61 |
| Ø18 mm | 2.01 | 2.04 |
| Ø20 mm | 2.48 | 2.51 |
| Ø22 mm | 3.00 | 3.04 |
| Ø25 mm | 3.88 | 3.93 |
| Ø30 mm | 5.58 | 5.65 |
| Ø35 mm | 7.60 | 7.70 |
| Ø40 mm | 9.93 | 10.05 |
| Ø45 mm | 12.56 | 12.72 |
| Ø50 mm | 15.51 | 15.71 |
| Ø60 mm | 22.34 | 22.62 |
| Ø70 mm | 30.40 | 30.79 |
| Ø80 mm | 39.71 | 40.21 |
| Ø90 mm | 50.26 | 50.89 |
| Ø100 mm | 62.05 | 62.83 |
Stainless steel hexagon bar weight table
Calculated for 304 (7.9 g/cm³). Sizes are across flats.
| Across flats (A/F) | kg/m |
|---|---|
| 8 mm | 0.438 |
| 10 mm | 0.684 |
| 12 mm | 0.985 |
| 13 mm | 1.16 |
| 14 mm | 1.34 |
| 17 mm | 1.98 |
| 19 mm | 2.47 |
| 22 mm | 3.31 |
| 24 mm | 3.94 |
| 27 mm | 4.99 |
| 30 mm | 6.16 |
| 32 mm | 7.01 |
| 36 mm | 8.87 |
| 41 mm | 11.50 |
Stainless steel flat bar weight table
Calculated for 304 (7.9 g/cm³). Sizes are given as thickness × width.
| Thickness × width | kg/m |
|---|---|
| 3 × 20 mm | 0.474 |
| 3 × 30 mm | 0.711 |
| 4 × 30 mm | 0.948 |
| 4 × 40 mm | 1.26 |
| 5 × 20 mm | 0.790 |
| 5 × 30 mm | 1.19 |
| 5 × 40 mm | 1.58 |
| 5 × 50 mm | 1.98 |
| 6 × 40 mm | 1.90 |
| 8 × 40 mm | 2.53 |
| 8 × 50 mm | 3.16 |
| 10 × 30 mm | 2.37 |
| 10 × 40 mm | 3.16 |
| 10 × 50 mm | 3.95 |
| 10 × 60 mm | 4.74 |
| 10 × 80 mm | 6.32 |
| 10 × 100 mm | 7.90 |
| 12 × 50 mm | 4.74 |
| 15 × 50 mm | 5.92 |
| 20 × 50 mm | 7.90 |
Density table
| Grade | Density |
|---|---|
| 304 | 7.9 g/cm³ |
| 316 | 8 g/cm³ |
| 310S · X8CrNi25-21 | 7.9 g/cm³ |
| 1.4541 | 7.9 g/cm³ |
Our stainless steel products
Frequently asked questions
How much does 1 m² of stainless steel sheet weigh?
1 m² of 1 mm 304 stainless steel weighs 7.90 kg, so a 1 × 1000 × 2000 mm sheet weighs about 15.8 kg and a 2 × 1250 × 2500 mm sheet about 49.4 kg. Values for 316 are about 1.3 % higher.
Do 304 and 316 stainless steel weigh differently?
Because of its higher molybdenum and nickel content, 316 has a slightly higher density (8.0 g/cm³) than 304 (7.9 g/cm³). A 316 part of the same size is about 1.3 % heavier; the difference is small for single parts but matters for large tonnages.
How much does 1 metre of stainless steel tube weigh?
It depends on the outside diameter and wall thickness. For example, in 304 stainless steel 1 metre of 25 × 2 mm tube weighs about 1.14 kg, 48.3 × 2 mm about 2.30 kg and 60.3 × 2 mm about 2.89 kg.
How much does 1 metre of stainless steel round bar weigh?
For 304 stainless steel, 1 metre of Ø10 mm bar weighs about 0.62 kg, Ø20 mm about 2.48 kg and Ø50 mm about 15.51 kg.
Why can the delivered weight differ from the calculated weight?
The calculator gives the theoretical weight. The actual weight can differ slightly because of the thickness, diameter and wall-thickness tolerances allowed by the standards and the cutting allowance. For products sold by weight, we invoice on the actual weight as weighed.