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    Table of Contents

    Steel C-Channels are known for their unique shape – the C-shaped cross section, that provides exceptional strength and makes them ideal for use in building frameworks, floor supports and vehicle manufacturing. Different C channel sizes, varying in depth between 50mm to 400mm, are also used for wiring and plumbing. When it comes to using steel channels in construction and engineering projects, it’s recommended to refer to a standard C channel weight chart or use an online C Channel Weight calculator for better estimation and project planning.

    Today, we take a look at the multifaceted uses and specifications of steel C-channels, and learn how to calculate their weight for professionals to optimise their applications, ensuring cost-efficiency and project soundness.

    Disclaimer: The focus of this article is to enable readers understand the process of C-channel weight calculations and how one can build a weight chart based on different dimensions and sizes. For actual C Channel Weight per meter and sizes as per accepted standards, please check with your steel manufacturer.

    C channel weight chart

    Let’s take a look at how weight of c-channels varies based on their sizes and dimensions. The chart will enable you to understand how carbon steel/ mild steel and other steel c channel weight varies.

    C channel size (mm) C channel weight per meter (kg) C channel weight per foot (kg/ft)
    50x25x5 3.86 1.18
    75x40x5 6.92 2.11
    100x50x5 9.37 2.86
    120x60x6 12.61 3.85
    150x75x6.5 17.90 5.46
    180x75x7 20.59 6.28
    200x75x8 22.37 6.82
    200x75x9 25.89 7.59
    250x90x9 30.59 9.33
    300x90x9 34.49 10.52

    *This is for reference only and not a standard C-channel weight chart. For an authentic weight chart based on C Channel standard sizes please consult your steel seller/manufacturer.

    50x25x5 – What it means:

    Height: The first number (50 mm) represents the height or the vertical measurement, also known as depth

    Width (Flange width): The next number (25 mm) refers to the horizontal measurement across the open face from one flange to another

    Thickness: The final number (5 mm) is the thickness of the channel

    Height and Width determine the load bearing capabilities and strength of the c-channel, while thickness can impact the durability and stiffness.

    Also read: I beam weight chart

    C channel weight calculator

    How to calculate C channel weight?

    Let us now understand how to calculate the weight of a C-channel without using a C Channel Weight calculator. This will enable professionals in structural planning in construction and manufacturing and logistics.

    Formula for C-channel weight calculator:

    Weight per meter = Width (mm) x Height (mm) x Thickness (mm) x Density of steel


    Density of steel (standard) = 7850 kg/m³ or 0.007850

    Now let’s understand this with an example.

    Steps to calculate C Channel weight per meter:

    Step 1: Take the measurement

    For our example, let’s consider the following C Channel sizes:

    Width = 100 mm

    Height = 50 mm

    Thickness = 5 mm

    Step 2: Calculate C channel weight

    Using formula, we get:

    Weight = 100 mm x 50 mm x 5 mm x 0.007850

    = 19.625 kg/m

    For a C-channel of 50 mm height, C Channel Weight per meter is 19.625 kg/m.

    Weight of C-channel calculation (with total volume)

    The next method to calculate C-channel weight is a more detailed one that considers the dimensions of the Web and Flanges. It is calculated using the standard formula:

    Weight = Volume x Density


    Volume = A + 2B

    Density of steel (standard) = 7850 kg/m³ or 0.007850

    Going with our previous example, the measurements are:

    Width = 100 mm

    Height = 50 mm

    Thickness = 5 mm

    Thickness of Web (TW) = 5 mm

    Thickness of Flanges (TF) = 10 mm

    Length = 1 m or 1000 mm


    Total Flange Volume B (thickness of Flange) = 2 (l x w x h)

    = 2 (1 x 0.095 x 0.01)

    = 2 (0.00095)

    = 0.0019 m³

    Total Web Volume A (thickness of Web) = (l x w x h)

    = (1 x 0.005 x 0.05)

    = 0.00025 m³

    Total volume of C-channel weight = A + 2B

    = 0.0019 m³ + 0.00025 m³

    = 0.00215 m³

    Total weight of C channel = Volume x Density

    = 0.00215 m³ x 7850 kg/m³

    = 16.8775 kg

    Also read: MS flat weight chart

    Alternative ways to calculate C channel weight

    There are other ways to calculate the weight of C-channels. Another popular and precise formula for C-channel weight calculation is:

    Weight = {2 (Height + Width) – 2 (Thickness) mm} x Length (m) x Thickness (mm) x Steel Density

    C channel weight

    What are the sizes of C channels?

    When it comes to C Channel standard sizes, 75 x 40 mm to 200 x 75 mm are the most common sizes.

    C-channels come in a variety of sizes, each suited for specific structural applications, from light, to medium and heavy weights. Here’s a sample for your understanding of C Channel standard sizes.

    C Channel standard sizes Weight/meter Application
    50x25x5 mm 3.86 kg Light – used for framing and mounting structures (e.g., door and window framing, interior partitions) in both residential and commercial structures
    150x75x6.5 mm 17.90 kg Medium – used for construction of bridges and platforms, heavy machinery support, framework in construction projects, etc.
    300x90x9 mm 34.49 kg Large – for heavy industrial use, high rise building construction, frameworks for heavy load bearing capabilities, structural support in large architectural project

    Also read: Steel bar weight chart

    What is the maximum size of C channel?

    A C channel can be tailor made to suit specific business needs. However, in most cases, the maximum size of a c channel is: 400 x 100 x 8.8 mm with 50.1 as weight per kg.

    A length of 6 to 12 meters is an accepted length for best results.

    In general, the longer the channel, the deeper it will have to go inside the ground. Hence, the height or depth of the channel also matter.

    What is the length of a C-channel?

    There are standard steel c-channel sizes readily available, which is usually 6 to 12 meters. Else, some manufacturers can also customise channels as per requirements.

    C-channel standard length size:

    • 6 meters (approximately 20 feet): Used in construction work and structural applications
    • 12 meters (approximately 40 feet): Used in construction projects requiring longer channels to reduce the number of joints and give higher structural integrity

    C channel size

    What size is a 100mm channel?

    A 100mm channel generally refers to the height or depth of the channel – which is 100 mm in this case. This means the vertical measurement from the base of the channel to the top.

    A C channel standard size for a 100mm channel can be: 100 x 50 x 5 mm


    100 mm is the height/depth

    50 mm represents the width of the Flanges

    5 mm is the thickness

    This is a common size used in medium scale construction work, where moderate strength and load bearing capabilities are required.

    Also read: How to calculate rectangular hollow section of steel

    What size is a 125 C channel?

    When we look at a 125 C channel, it refers to its height or depth of 125 mm.

    However, other details like width, thickness, and length are also required if one want to calculate C channel weight. For 125 c channel standard size is: 125 x 65 x 5.3 and weight approximately 13.10 kg/meter.

    For instance, a typical 125 C channel can measure as: 125 x 65 x 6 mm


    125 mm is the depth or height

    65 mm is the horizontal breadth of the channel

    6 mm is the thickness

    This is a heavy C channel and used in structures that require more strength and stability.

    Buying steel channels the smart way

    When you buy C channels in India, it’s smart to have a c channel weight chart and size guide handy to ensure you get the right quantity for your projects. Here are some tips for you to follow:

    • Verify weight specifications and confirm that the channels meet the structural requirements for your project. Reliable sellers should be able to provide ISMC weight charts for you to refer to.
    • Focus on quality and get channels that come from reliable manufacturers and have been certified by relevant Indian Standards for longevity and safety. (Also read: List of IS code for steel)
    • Negotiate for best prices on bulk orders. Calculate c channel weight in kg and volumes for the best deals from suppliers. Also, check market rates and offers from different sellers.

    At Tata nexarc we can help you buy steel at the best prices. You can get credit option, door step delivery, and buy steel across multiple brands. To know more, get in touch now.

    *This article is for information only and to help readers understand basic details of C channel weight calculations. Readers are requested to check with their steel sellers for exact weight charts and sizes.

    Sohini Banerjee

    Sohini is a seasoned content writer with 12 years’ experience in developing marketing and business content across multiple formats. At Tata nexarc, she leverages her skills in crafting curated content on the Indian MSME sector, steel procurement, and logistics. In her personal time, she enjoys reading fiction and being up-to-date on trends in digital marketing and the Indian business ecosystem.