Standard conversion factors
INCH = 25.4 MILLIMETRE
FOOT = 0.3048 METRE
YARD = 0.9144 METRE
MILE = 1.6093 KILOMETER
ACRE = 0.4047 HECTARE
POUND = 0.4536 KILOGRAM
DEGREE FARENHEIT * 5/9 – 32 = DEGREE CELSIUS
MILLIMETRE= 0.394 INCH
METRE = 3.2808FOOT
METRE = 1.0936YARD

1) MILD STEEL (MS)
SHEET
WEIGHT (KGS) = LENGTH (MM) * WIDTH (MM) * 0. 00000785 * THICKNESS
example – The weight of MS Sheet of 1mm thickness and size 1250 MM * 2500 MM shall be
2500MM * 1250 MM * 0.00000785 * 1 = 24.53 KGS/ SHEET
—————————————————
ROLLED STEEL CHANNELS

MS SQUARE
WEIGHT (KGS ) = WIDTH * WIDTH * 0.00000785 * LENGTH.
Example : A Square of size 25mm and length 1 metre then the weight shall be.
25 * 25 * .00000785 * 1000mm = 4.90 kgs / metre

MS ROUND
WEIGHT (KGS ) = 3.14 * 0.00000785 * ((diameter / 2)*( diameter / 2)) * LENGTH.
Example : A Round of 20mm diameter and length 1 metre then the weight shall be.
3.14 * 0.00000785 * ((20/2) * ( 20/2)) * 1000 mm = 2.46 kgs / metre
SS ROUND
DIA (mm) * DIA (mm) * 0.00623 = WEIGHT PER METRE
SS / MS Pipe
OD ( mm) – W.Tthick(mm) * W.Thick (mm) * 0.0248 = Weight Per Metre
OD ( mm) – W.Tthick(mm) * W.Thick (mm) * 0.00756 = Weight Per Foot

SS / MS CIRCLE
DIA(mm) * DIA (mm) * THICK(mm) * 0.0000063 = Kg Per Piece

SS sheet
Length (Mtr) * Width (Mtr) * Thick(mm) * 8 = Weight Per Piece
Length (ft) * Width (ft) * Thick(inch) * 3 /4 = Weight Per Piece

S.S HEXAGONAL BAR
DIA (mm) * DIA (mm) * 0.00680 = WT. PER Mtr
Dia (mm) * Dia (mm) * 0.002072 = Wt. Per foot.

BRASS SHEET
WEIGHT (KGS) = LENGTH (MM) * BREADTH (MM) * 0. 0000085 * THICKNESS
EXAMPLE = THE WEIGHT OF BRASS SHEET OF THICKNESS 1 MM , LENGTH 1220 MM AND BREADTH 355 MM SHALL BE
1220 * 355 * 0.0000085 * 1 = 3.68 Kgs / Sheet

COPPER SHEET
WEIGHT (KGS) = LENGTH (MM) * BREADTH (MM) * 0. 0000087 * THICKNESS
EXAMPLE = THE WEIGHT OF BRASS SHEET OF THICKNESS 1 MM , LENGTH 1220 MM AND BREADTH 355 MM SHALL BE
1220 * 355 * 0.0000087 * 1 = 3.76 Kgs / Sheet
BRASS / COPPER PIPE
OD (mm) – THICK (mm) * THICK(mm) * 0.0260 = WEIGHT PER METRE

ALUMINIUM SHEET
WEIGHT (KGS) = LENGTH (MM) * BREADTH (MM) * 0. 00000026 * THICKNESS
EXAMPLE = THE WEIGHT OF ALUMINIUM SHEET OF THICKNESS 1 MM , LENGTH 2500 MM AND BREADTH 1250 MM SHALL BE
2500 * 1250 * 0.0000026 * 1 = 8.12 Kgs / Sheet

ALUMINIUM PIPE
OD (mm) – THICK(mm) * THICK(mm) *0.0083 = WEIGHT PER METRE

We are extremely thankful to Er. Harpal Aujla for sharing this on our site and thus helping civil engineering students.

The E indicates an exponent, as in scientific notation, followed by a positive or negative number, representing the power of 10 by which the given conversion factor is to be multiplied before use.

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Typical Conversion Table ^*

Civil engineers throughout the world accept both the United States Customary System (USCS) and the System International (SI) units of measure for both applied and theoretical calculations. However, the SI units are much more widely used than those of the USCS. Hence, both the USCS and the SI units are presented for essentially every formula in this website.

To permit even wider use of this text, this website contains
the conversion factors needed to switch from one system to the other.

Commonly Used USCS and SI Units ^*

^* These are the most common units which everyone should know.This website deals with a detailed discussion in next pages.