If you’re working in the metalworking industry, even you’re engineers, you will try to find one calculator to help you calculate the weight of various metals and steels including ms plate, gi sheet, structural steel, ms angle, mild steel, steel bar, square tube, angle, aluminum etc.

Below is the **theoretical steel weight calculator** for you to calculate various metals. What you need to do is calculate the sectional area and find the metal density.

You can also refer to Density Table of Metals (Iron, Steel, Brass, Aluminum) and Alloys & Density Table for Commonly Used Sheet Metal Materials.

From the above two posts, you will find the density of various metals and alloys.

However, sometimes you may want to learn the weight calculation formula and keep it in your mind, here is it:

**Weight (kg) = Sectional Area (mm**

^{2}) × Length (m) × Density (ρ, g/cm^{3})× 1/1000In order to help you quickly find the metal weight formula, I made infographic which is not only practical but also beautiful.

Besides, recently I’m working on making steel weight chart in order to help the one who needs it. However, when I finished it, I find the steel weight calculation formula is much more convenient and accurate than the steel weight table.

If you want the PDF version of the weight calculation formula, you can save below infographic or bookmark in the web browser.

P.S: You can click to check out the H Beam & I Beam Weight Calculator (Weight Chart in Kg).

Contents

- 1 Steel Plate
- 2 Steel Tube
- 3 Round Steel
- 4 Square Steel
- 5 Flat Steel
- 6 Hexagonal Steel
- 7 Rebar
- 8 Flat Steel Tube
- 9 Rectangular Steel Tube
- 10 Equal-leg angle Steel
- 11 Unequal-leg Angle Steel
- 12 Brass Tube
- 13 Copper Tube
- 14 Aluminum Embossed Sheet
- 15 Calculation Method: ratio × thickness = weight / ㎡
- 16 Related Various Theoretical Metal Weight Calculation Formula

**Steel Plate**

- Formula: 7.85×length (m)×width (m)×thickness (mm)
- E.g: 6m (length)×1.51m (width)×9.75mm (thickness)
- Calculation: 7.85×6×1.51×9.75=693.43kg

**Steel Tube**

- Formula: （OD-Wall thickness）×Wall thickness (mm)×0.02466×length (m)
- E.g: 114mm(OD)×4mm (Wall thickness) × 6m (length)
- Calculation: （114-4）×4×0.02466×6=65.102kg

**Round Steel**

- Formula: Dia.mm×Dia.mm×0.00617×length (m)
- E.g: Φ20mm (Dia.)×6m (length)
- Calculation: 20×20×0.00617×6=14.808kg

**Square Steel**

- Formula: Edge width (mm)×Edge width (mm)×length (m)×0.00785
- E.g: 50mm (Edge width)×6m (length)
- Calculation: 50×50×6×0.00785=117.75(kg)

**Flat Steel**

- Formula: Edge width (mm)×thickness (mm)×length (m) × 0.00785
- E.g: 50mm (Edge width) × 5.0mm (thickness)×6m (length)
- Calculation: 50×5×6×0.00785=11.7.75(kg)

**Hexagonal Steel**

- Formula: Edge-to-edge Dia.×Edge-to-edge Dia.× length (m)×0.0068
- E.g: 50mm (Dia.) ×6m (length)
- Calculation: 50×50×6×0.0068=102(kg)

**Rebar**

- Formula: Dia.mm×Dia.mm×0.00617×length (m)
- E.g: Φ20mm(Dia.)×12m (length)
- Calculation: 20×20×0.00617×12=29.616kg

**Flat Steel Tube**

- Formula: (Edge length + Edge width) × 2 × thickness×0.00785×length (m)
- E.g: 100mm×50mm×5mm (thickness)×6m (length)
- Calculation: (100+50) × 2×5×0.00785×6=70.65kg

**Rectangular Steel Tube**

- Formula: Edgewidthmm×4×thickness×0.00785×length(m)
- E.g: 50mm×5mm (thickness)×6m (length)
- Calculation: 50×4×5×0.00785×6=47.1kg

**Equal-leg angle Steel**

- Formula: (Edge width×2-thickness)×thickness×0.00785×length (m)
- E.g: 50mm×50mm×5 thickness×6m(length)
- Calculation: (50×2-5)×5×0.00785×6=22.37kg

**Unequal-leg Angle Steel**

- Formula: (Edge width+Edge width-thickness) × thickness×0.0076×lengthm
- E.g: 100mm×80mm×8 thickness×6m(length)
- Calculation: (100+80-8) × 8×0.0076×6=62.746kg

Other nonferrous metals

**Brass Tube**

- Formula: (OD-Wall thickness) × thickness×0.0267×lengthm
- E.g: 20mm×1.5mm (thickness)×6m(length)
- Calculation: (20-1.5) × 1.5×0.0267×6=4.446kg

**Copper Tube**

- Formula: (OD-Wall thickness) × thickness×0.02796×length (m)
- E.g: 20mm×1.5mm (thickness)×6m(length)
- Calculation: (20-1.5) ×1.5×0.02796×6=4.655kg

**Aluminum Embossed Sheet**

- Formula: length (m)×width (m)×thickness (mm)×2.96
- E.g: 1m width×3m length×2.5mm thickness
- Calculation: 1×3×2.5×2.96=22.2kg

Brass Plate

Ratio: 8.5

Copper Sheet

Ratio: 8.9

Zinc Plate

Ratio: 7.2

Lead Plate

Ratio: 11.37

**Calculation Method**: ratio × thickness = weight / ㎡

**Calculation Method**: ratio × thickness = weight / ㎡

## Related Various Theoretical Metal Weight Calculation Formula

**Octagonal Steel** (kg)=0.0065×across width×across width×length

**Flat Steel** (kg)=0.00785×thickness×width×length

**Round Copper Rod** (kg)=0.00698×dia.×dia.×length

**Round Brass Rod** (kg)=0.00668×dia.×dia.×length

**Round Aluminum Rod** (kg)=0.0022×dia.×dia.×length

**Square Red Copper Rod** (kg)=0.0089×width×width×length

**Square Brass Copper Rod** (kg)=0.0085×width×width×length

**Square Aluminum Rod** (kg)=0.0028×width×width×length

**Hexagonal Copper Rod** (kg)=0.0077×across width×across width×length

**Hexagonal Brass Rod** (kg)=0.00736×width×across width×length

**Hexagonal Aluminum Rod** (kg)=0.00242×across width×across width×length

**Copper Plate** (kg)=0.0089×thickness×width×length

**Brass Plate** (kg)=0.0085×thickness×width×length

**Aluminum Plate** (kg)=0.00171×thickness×width×length

**Round Red Copper Tube** (kg)=0.028×thickness×(O.D-thickness)×length

**Round Brass Tube** (kg)=0.0267×thickness×(O.D-thickness)×length

**Round Aluminum Copper Tube** (kg)=0.00879×thickness×(O.D-thickness)×length

Note: in above formula, the unit of length is “m”，unit of area is “㎡”，the rest unit is “mm”

lekh2003January 3, 2018 at 4:00 pmThese formulas are correct. The formulas are easily derived through the equation m=pv

“m” is the mass of the object.

V is what you have to calculate as the volume.

p is the density.

The website is simplifying this formula into situation specific equations which can be derived from common variables you might know.

ANFebruary 1, 2018 at 3:01 pmYou say: “If you want the PDF version of the weight calculation, you can save below infographic or bookmark in web browser.”

everything on this page is protected so no possibility to save or copy anything from it…

MachineMfgFebruary 1, 2018 at 7:28 pmin order to protect it, we limit the downloads. However, you can save the bookmark in your browser for future convenience checking.

NIRBHAYMarch 3, 2018 at 7:18 pmREBER CALCULATION IS HOW RIGHT? IF BAR 20MM DIA THEN HOW 0.617 WEIGHT COME PER MTR?

MachineMfgMarch 4, 2018 at 10:35 amthis formula is one simple way to calculate rebar weight based on experience. You can also calculate based on the round steel weight calculation formula above.

ryne leeMarch 15, 2018 at 2:41 pmvery useful for sheet metal fabricators!

larry roderickApril 2, 2018 at 6:56 amI need it in non metric measurements

MachineMfgApril 2, 2018 at 11:40 amSorry larry, we currently only have the metric measurement.

StephenApril 12, 2018 at 10:38 pmI have gone through the formulas, they were helpful and correct except for one or two that need more explanation.

Besides that, you have really done a very good job. Well done.

godyApril 14, 2018 at 3:46 amthanks to you sir,very heplful this formula.really good and very exactly solution.

Rupesh PatilApril 18, 2018 at 8:41 pmit is very good for immediate calculation

anilMay 3, 2018 at 8:22 pmwhere is born 0.02466

MachineMfgMay 4, 2018 at 8:44 amfrom engineer’s experience

Hussnain BilalMay 24, 2018 at 7:46 pmVery useful and good collection

SamJune 7, 2018 at 9:12 pmSteel sheets

pawan singhJune 16, 2018 at 12:58 pmvery useful

echesconazzyannJuly 11, 2018 at 1:42 pmComment…what of the density

MachineMfgJuly 11, 2018 at 4:40 pmMost of the density of the steel should be confirmed by your steel suppliers. Probably we will update this later for your reference.

SanjeevAugust 1, 2018 at 4:24 pmVery Useful for engineers, Thank you for your valuable post. MS Channel weight formula also , if you have please share it.

MachineMfgAugust 1, 2018 at 5:57 pmwill update the formula in the near future, so stay turned.