Steel section weight table

Q: How do I convert tonnes of a section into metres?

Divide the mass by the mass per metre from the table: L = M / G. A tonne of UPN 200 (25.3 kg/m) is 39.5 m, a tonne of IPE 200 (22.4 kg/m) 44.6 m, a tonne of 50×50×5 angle (3.77 kg/m) 265 m. Round the bar count up.

Mass per metre and dimensions of rolled sections in one place: IPE, INP, HEA and HEB beams, UPN and UPE channels, equal and unequal angles. Nominal values to the standard named above each table.

This is what those sections weigh: IPE 270 — 36.1 kg/m, HEA 280 — 76.4, UPN 200 — 25.3, L 50×50×6 — 4.5. Below is every size in each series with its dimensions and cross-section.

The sections used most

Section	Mass, kg/m	6 m length, kg	12 m length, kg
L 40×40×4	2.42	14.5	29.0
L 50×50×5	3.77	22.6	45.2
L 60×60×6	5.42	32.5	65.0
L 80×80×8	9.63	57.8	115.6
UPN 80	8.64	51.8	103.7
UPN 100	10.6	63.6	127.2
UPN 140	16.0	96.0	192.0
UPN 200	25.3	151.8	303.6
IPE 100	8.10	48.6	97.2
IPE 140	12.9	77.4	154.8
IPE 160	15.8	94.8	189.6
IPE 200	22.4	134.4	268.8
IPE 240	30.7	184.2	368.4
IPE 300	42.2	253.2	506.4
HEA 160	30.4	182.4	364.8
HEA 200	42.3	253.8	507.6
HEB 160	42.6	255.6	511.2
HEB 200	61.3	367.8	735.6
HEB 240	83.2	499.2	998.4
HEB 300	117	702.0	1404.0

Common sizes: weight per bar and per tonne

Cross-sections of an I-beam, a channel and an angle with dimensions h, b, s and t — What the h, b, s and t columns in the section tables mean

A few of the sizes looked up most in this table, worked out for 6 m and 12 m bars, metres per tonne and a comparison with the neighbouring series. The numbers come from the same table rows below.

IPE 270 — 36.1 kg/m

IPE 270 weighs 36.1 kg per metre: a 6 m bar is 216.6 kg, a 12 m bar 433.2 kg, and one tonne buys about 27.7 m of it. Section 270 × 135 mm, web 6.6 mm, flange 10.2 mm, area 45.9 cm².

INP 200 — 26.2 kg/m

INP 200 weighs 26.2 kg per metre: a 6 m bar is 157.2 kg, a 12 m bar 314.4 kg, and one tonne buys about 38.2 m of it. Section 200 × 90 mm, web 7.5 mm, flange 11.3 mm, area 33.4 cm². IPE 200 is 15 % lighter (22.4 kg/m).

HEA 280 — 76.4 kg/m

HEA 280 weighs 76.4 kg per metre: a 6 m bar is 458.4 kg, a 12 m bar 916.8 kg, and one tonne buys about 13.1 m of it. Section 270 × 280 mm, web 8 mm, flange 13 mm, area 97.3 cm². Note: the actual depth is 270 mm, not 280. HEB 280 is 35 % heavier (103 kg/m).

HEB 240 — 83.2 kg/m

HEB 240 weighs 83.2 kg per metre: a 6 m bar is 499.2 kg, a 12 m bar 998.4 kg, and one tonne buys about 12 m of it. Section 240 × 240 mm, web 10 mm, flange 17 mm, area 106 cm². HEA 240 is 28 % lighter (60.3 kg/m).

UPN 300 — 46.2 kg/m

UPN 300 weighs 46.2 kg per metre: a 6 m bar is 277.2 kg, a 12 m bar 554.4 kg, and one tonne buys about 21.6 m of it. Section 300 × 100 mm, web 10 mm, flange 16 mm, area 58.8 cm². UPE 300 is 4 % lighter (44.4 kg/m).

L 50×50×6 — 4.47 kg/m

L 50×50×6 weighs 4.47 kg per metre: a 6 m bar is 26.8 kg, a 12 m bar 53.6 kg, and one tonne buys about 224 m of it. Legs 50 and 50 mm, thickness 6 mm, area 5.69 cm². L 50×50×5 is 16 % lighter (3.77 kg/m).

L 150×90×10 — 18.2 kg/m

L 150×90×10 weighs 18.2 kg per metre: a 6 m bar is 109.2 kg, a 12 m bar 218.4 kg, and one tonne buys about 54.9 m of it. Legs 150 and 90 mm, thickness 10 mm, area 23.2 cm².

Beams

IPE beams — EN 10365

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
IPE 80	80	46	3.8	5.2	6	7.64
IPE 100	100	55	4.1	5.7	8.1	10.3
IPE 120	120	64	4.4	6.3	10.4	13.2
IPE 140	140	73	4.7	6.9	12.9	16.4
IPE 160	160	82	5	7.4	15.8	20.1
IPE 180	180	91	5.3	8	18.8	23.9
IPE 200	200	100	5.6	8.5	22.4	28.5
IPE 220	220	110	5.9	9.2	26.2	33.4
IPE 240	240	120	6.2	9.8	30.7	39.1
IPE 270	270	135	6.6	10.2	36.1	45.9
IPE 300	300	150	7.1	10.7	42.2	53.8
IPE 330	330	160	7.5	11.5	49.1	62.6
IPE 360	360	170	8	12.7	57.1	72.7
IPE 400	400	180	8.6	13.5	66.3	84.5
IPE 450	450	190	9.4	14.6	77.6	98.8
IPE 500	500	200	10.2	16	90.7	116
IPE 550	550	210	11.1	17.2	106	134
IPE 600	600	220	12	19	122	156

INP beams (tapered flange) — DIN 1025-1

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
INP 80	80	42	3.9	5.9	5.94	7.57
INP 100	100	50	4.5	6.8	8.34	10.6
INP 120	120	58	5.1	7.7	11.1	14.2
INP 140	140	66	5.7	8.6	14.3	18.3
INP 160	160	74	6.3	9.5	17.9	22.8
INP 180	180	82	6.9	10.4	21.9	27.9
INP 200	200	90	7.5	11.3	26.2	33.4
INP 220	220	98	8.1	12.2	31.1	39.5
INP 240	240	106	8.7	13.1	36.2	46.1
INP 260	260	113	9.4	14.1	41.9	53.3
INP 280	280	119	10.1	15.2	47.9	61
INP 300	300	125	10.8	16.2	54.2	69

HEA beams — EN 10365

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
HEA 100	96	100	5	8	16.7	21.2
HEA 120	114	120	5	8	19.9	25.3
HEA 140	133	140	5.5	8.5	24.7	31.4
HEA 160	152	160	6	9	30.4	38.8
HEA 180	171	180	6	9.5	35.5	45.3
HEA 200	190	200	6.5	10	42.3	53.8
HEA 220	210	220	7	11	50.5	64.3
HEA 240	230	240	7.5	12	60.3	76.8
HEA 260	250	260	7.5	12.5	68.2	86.8
HEA 280	270	280	8	13	76.4	97.3
HEA 300	290	300	8.5	14	88.3	112
HEA 320	310	300	9	15.5	97.6	124
HEA 340	330	300	9.5	16.5	105	133
HEA 360	350	300	10	17.5	112	143
HEA 400	390	300	11	19	125	159
HEA 450	440	300	11.5	21	140	178
HEA 500	490	300	12	23	155	198
HEA 550	540	300	12.5	24	166	212
HEA 600	590	300	13	25	178	226

HEB beams — EN 10365

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
HEB 100	100	100	6	10	20.4	26
HEB 120	120	120	6.5	11	26.7	34
HEB 140	140	140	7	12	33.7	43
HEB 160	160	160	8	13	42.6	54.3
HEB 180	180	180	8.5	14	51.2	65.3
HEB 200	200	200	9	15	61.3	78.1
HEB 220	220	220	9.5	16	71.5	91
HEB 240	240	240	10	17	83.2	106
HEB 260	260	260	10	17.5	93	118
HEB 280	280	280	10.5	18	103	131
HEB 300	300	300	11	19	117	149
HEB 320	320	300	11.5	20.5	127	161
HEB 340	340	300	12	21.5	134	171
HEB 360	360	300	12.5	22.5	142	181
HEB 400	400	300	13.5	24	155	198
HEB 450	450	300	14	26	171	218
HEB 500	500	300	14.5	28	187	239
HEB 550	550	300	15	29	199	254
HEB 600	600	300	15.5	30	212	270

Channels

UPN channels — DIN 1026-1

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
UPN 50	50	38	5	7	5.59	7.12
UPN 65	65	42	5.5	7.5	7.09	9.03
UPN 80	80	45	6	8	8.64	11
UPN 100	100	50	6	8.5	10.6	13.5
UPN 120	120	55	7	9	13.4	17
UPN 140	140	60	7	10	16	20.4
UPN 160	160	65	7.5	10.5	18.8	24
UPN 180	180	70	8	11	22	28
UPN 200	200	75	8.5	11.5	25.3	32.2
UPN 220	220	80	9	12.5	29.4	37.4
UPN 240	240	85	9.5	13	33.2	42.3
UPN 260	260	90	10	14	37.9	48.3
UPN 280	280	95	10	15	41.8	53.3
UPN 300	300	100	10	16	46.2	58.8
UPN 320	320	100	14	17.5	59.5	75.8
UPN 350	350	100	14	16	60.6	77.3
UPN 400	400	110	14	18	71.8	91.5

UPE channels — DIN 1026-2

Section	h, mm	b, mm	s, mm	t, mm	Mass, kg/m	A, cm²
UPE 80	80	50	4	7	7.9	10
UPE 100	100	55	4.5	7.5	9.82	12.5
UPE 120	120	60	5	8	12.1	15.4
UPE 140	140	65	5	9	14.5	18.4
UPE 160	160	70	5.5	9.5	17	21.7
UPE 180	180	75	5.5	10.5	19.7	25.1
UPE 200	200	80	6	11	22.8	29
UPE 220	220	85	6.5	12	26.6	33.9
UPE 240	240	90	7	12.5	30.2	38.5
UPE 270	270	95	7.5	13.5	35.2	44.8
UPE 300	300	100	9.5	15	44.4	56.6
UPE 330	330	105	11	16	53.2	67.8
UPE 360	360	110	12	17	61.2	78
UPE 400	400	115	13.5	18	72.2	92

Angles

Equal angles — EN 10056-1

Section	a, mm	b, mm	t, mm	Mass, kg/m	A, cm²
L 20×20×3	20	20	3	0.88	1.12
L 25×25×3	25	25	3	1.12	1.42
L 25×25×4	25	25	4	1.45	1.85
L 30×30×3	30	30	3	1.36	1.74
L 30×30×4	30	30	4	1.78	2.27
L 35×35×4	35	35	4	2.09	2.67
L 40×40×4	40	40	4	2.42	3.08
L 40×40×5	40	40	5	2.97	3.79
L 45×45×5	45	45	5	3.38	4.3
L 50×50×5	50	50	5	3.77	4.8
L 50×50×6	50	50	6	4.47	5.69
L 60×60×6	60	60	6	5.42	6.91
L 60×60×8	60	60	8	7.09	9.03
L 70×70×7	70	70	7	7.38	9.4
L 80×80×8	80	80	8	9.63	12.3
L 90×90×9	90	90	9	12.2	15.5
L 100×100×10	100	100	10	15	19.2
L 100×100×12	100	100	12	17.8	22.7
L 120×120×12	120	120	12	21.6	27.5
L 150×150×15	150	150	15	33.8	43
L 200×200×20	200	200	20	59.9	76.3

Unequal angles — EN 10056-1

Section	a, mm	b, mm	t, mm	Mass, kg/m	A, cm²
L 40×20×4	40	20	4	1.77	2.26
L 50×30×5	50	30	5	2.96	3.78
L 60×40×5	60	40	5	3.79	4.79
L 60×40×6	60	40	6	4.46	5.68
L 65×50×5	65	50	5	4.35	5.54
L 70×50×6	70	50	6	5.41	6.89
L 75×50×7	75	50	7	6.48	8.3
L 80×40×6	80	40	6	5.41	6.89
L 80×60×7	80	60	7	7.36	9.38
L 100×50×8	100	50	8	8.97	11.4
L 100×65×8	100	65	8	9.94	12.7
L 100×75×8	100	75	8	10.6	13.5
L 120×80×8	120	80	8	12.2	15.5
L 150×90×10	150	90	10	18.2	23.2
L 150×100×10	150	100	10	19	24.2
L 200×100×10	200	100	10	23	29.2

Symbols in the tables

h — section depth, b — flange width, s — web thickness, t — flange thickness (on an angle simply the leg thickness), A — cross-sectional area. All dimensions in millimetres, mass in kilograms per metre, area in square centimetres.

This is the European range

IPE, INP, HEA, HEB, UPN and UPE are the sections held in stock across the EU and the UK. American W, S, C and L shapes to ASTM A6 form a separate series with different proportions, and matching numbers in a designation do not make two sections interchangeable — for those, use the AISC tables.

How to read this table

The section number is almost always its depth in millimetres — but there are exceptions that catch people out. HEA 200 is 190 mm deep and HEA 300 is 290 mm; only HEB has a depth equal to its number. On an angle the number is the leg length, not a depth, and it is always quoted with the thickness: "50 angle" without the third figure specifies nothing, because 50×50×5 weighs 3.77 kg/m and 50×50×6 weighs 4.47.

Cross-sectional area A earns its keep in two places: checking stresses, and estimating how much weld it takes for a joint to carry what the member itself carries. Rule of thumb: the total throat area of the fillet welds at a node should be of the order of the area of the member being joined.

Where section mass comes from

Mass per metre is the cross-sectional area times the density: m = A · ρ, and with A in cm² and ρ = 7.85 g/cm³ that becomes m = A · 0.785 kilograms per metre. Check it on IPE 200: 28.5 × 0.785 = 22.4 kg/m — which is what the table says.

It does not work the other way round. Working the area out "from the dimensions", as the sum of the web and flange rectangles, comes out several per cent low, because it misses the root radii where the web meets the flange, and on INP and UPN the flange taper as well. That is why the mass of a rolled section is read rather than calculated — and why the calculators in this section take their values from here.

Table row for IPE 200 — h 200, b 100, s 5.6, t 8.5 mm, mass 22.4 kg/m, A 28.5 cm² — next to a scaled section with these dimensions; A × 0.785 gives the weight per metre, a 6 m length weighs 134.4 kg — The IPE 200 row laid out on the section: four dimensions in millimetres, the area A in cm² and the weight per metre that follows from it.

Worked example: the weight of a whole structure from the table

A 6 × 4 m canopy: four HEA 140 columns of 2.8 m, two IPE 200 beams of 6 m, five UPN 100 purlins of 4 m and eight 50×50×5 angle knee braces of 1.5 m. Every line is worked out the same way — metres times mass per metre from the table — and the allowance goes on at the end:

columns — HEA 140: 4 × 2.8 m = 11.2 m × 24.7 = 276.6 kg
beams — IPE 200: 2 × 6 m = 12 m × 22.4 = 268.8 kg
purlins — UPN 100: 5 × 4 m = 20 m × 10.6 = 212 kg
knee braces — L 50×50×5: 8 × 1.5 m = 12 m × 3.77 = 45.2 kg
Total: 802.7 kg; with 3 % added for gussets, welds and offcuts — 826.8 kg

That comes to 33.4 kg of structural steel per square metre of roof before the allowance (34.4 kg with it), without the sheeting — a figure worth having before any talk about foundations, transport and price. With many small connections the allowance can be more than 3 %. The bill of materials builds the same list with prices and bar breakdown, and typical layouts of such structures are covered under canopies.

Sketch of a 6 × 4 m canopy: four HEA 140 columns of 2.8 m, two IPE 200 beams of 6 m, five UPN 100 purlins of 4 m and eight 50×50×5 angle knee braces of 1.5 m; the sum 276.6 + 268.8 + 212 + 45.2 = 802.7 kg, 826.8 kg with a 3 % allowance — Four items, one sum: metres from the drawing times kg/m from the table, with the 3 % allowance added only at the end.

Why the invoice weight does not match the table

The table gives nominal weight, the invoice gives chargeable weight. They differ for a few reasons, and each one can be foreseen:

Rolling tolerances. Section dimensions and weight sit within the limits of the standards (EN 10034 for beams, EN 10279 for channels, EN 10056-2 for angles). A real batch can be 1–4 % lighter or heavier than the table figure.
How it is charged. The stockholder charges either on theoretical weight (table times length) or on weighed weight. On theoretical weight the invoice matches the table to the kilogram; on weighed weight it does not. Ask before ordering.
Whole bars and offcuts. You buy 6 m or 12 m bars, not the metres in the design. The offcuts are on the invoice even though they are not in the structure.
Coatings. Primer and zinc add weight that the black-steel table does not show; on thin angles it is noticeable.

The working rule: the table is for design, the first estimate and choosing transport and lifting gear. Charge the client on the invoice or certificate weight, and note the difference from the table so the next estimate can allow for it.

Conversions: kilograms, metres, bars

Three formulas cover any conversation with a stockholder. Metres from kilograms: L = M / G. Number of bars: n = L / 6 (or / 12), rounded up. Weight bought: M = n · 6 · G. Example: 500 kg of UPN 100 is 47.2 m, which is 8 bars of 6 m or 4 of 12 m.

Steel cost follows the same weight: K = Σ (L · G) · C, where C is the price per kilogram (with a price per tonne, T / 1000). That gives a simple check when comparing options: a metre of UPN 100 costs 2.8 times a metre of 50×50×5 angle, because it weighs that many times more. Cutting, drilling and delivery are added separately — per piece, per hole and per trip, not per kilogram.

Calculators built on these tables

Frequently asked questions

How do I get a structure mass out of the table quickly?

Add up the metres of each section and multiply by its mass per metre. Example: a frame of 24 m of 50×50×5 angle (3.77 kg/m) and 18 m of UPN 100 channel (10.6 kg/m) weighs 24 × 3.77 + 18 × 10.6 = 281 kg. Add 2–3 % for welds, gussets and offcuts.

What is the difference between nominal mass and certified mass?

Nominal follows from the dimensions given in the standard. The actual value sits within the rolling tolerances (EN 10034 for beams, EN 10279 for channels, EN 10056-2 for angles) and usually differs by 1–4 %. The stockholder invoices by the certified mass or by the weighed batch — the table is for design and a first estimate.

Where do I get the mass of a section that is not in the table?

For products with a regular cross-section — sheet, flat bar, round bar, tube, hollow section — mass follows from a formula, and the metal weight calculator gives it. For rolled sections outside the European standard, such as American W and S shapes or older GOST profiles, you need the producer's catalogue: converting "by the dimensions" is out by a few per cent.

What do HEB 240 and HEA 280 weigh?

HEB 240 is 83.2 kg/m, 499.2 kg per 6 m bar. HEA 280 is 76.4 kg/m, 458.4 kg per 6 m bar. Note that HEA 280 is actually 270 mm deep, while HEB 240 is exactly 240 mm.

How do I convert tonnes of a section into metres?

Divide the mass by the mass per metre from the table: L = M / G. A tonne of UPN 200 (25.3 kg/m) is 39.5 m, a tonne of IPE 200 (22.4 kg/m) 44.6 m, a tonne of 50×50×5 angle (3.77 kg/m) 265 m. Round the bar count up.

What does a UPN 300 channel weigh?

46.2 kg/m: a 6 m bar is 277.2 kg, a 12 m bar 554.4 kg. UPE 300 of the same depth weighs 44.4 kg/m.

Author: Dmitry Frolov, welder and metal fabricator Updated: 28 September 2026

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