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PVC rod weight calculator

Enter the dimensions of a PVC rod and this works out its volume and weight. Rigid unplasticised PVC. Flexible PVC runs 1150-1350 depending on plasticiser.

Total weight
0.687 223kg
≈ Rounded PVC rod weight
Weight of one rod
0.687 223
Volume of one piece
490.874
Weight per metre of length
0.687 223 kg/m
Density used
1400 kg/m3
Show the working
  1. Diameter = 25
  2. Length = 1000
  3. Number of pieces = 1
  4. volume_mm3 = pi * (25/2)^2 * 1000 = 490 874
  5. Volume of one piece = 490 874 / 1000 = 490.874
  6. Density used = 1400 = 1400
  7. Weight of one rod = 490 874 * 1400 / 1e9 = 0.687 223
  8. Total weight = 0.687 223 * 1 = 0.687 223
  9. Weight per metre of length = 490 874 / 1000 * 1000 * 1400 / 1e9 = 0.687 223

Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.

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    The formula

    • Volume = pi x (diameter / 2)^2 x length
    • Weight = volume x density, with density = 1400 kg/m3
    • One cubic millimetre of a material at 1000 kg/m3 weighs exactly one milligram, so the millimetre-to-kilogram step is a shift of the decimal point rather than a rounded factor.

    Rigid unplasticised PVC. Flexible PVC runs 1150-1350 depending on plasticiser.

    Dimensions are nominal. Mill tolerances on thickness, and the corner radii on formed sections, both move the real weight by a percent or two.

    Every field takes inches or feet as readily as millimetres: change the unit next to it and the conversion is done exactly before the arithmetic starts.

    Frequently asked

    What is the density of PVC?

    1400 kg/m3, which is 1.400 g/cm3. Rigid unplasticised PVC. Flexible PVC runs 1150-1350 depending on plasticiser.

    How do you calculate the weight of a PVC rod?

    Volume = pi x (diameter / 2)^2 x length. Multiply the volume by the density of PVC, 1400 kg/m3, taking care that both are in the same unit system.

    Can I enter dimensions in inches?

    Yes. Each dimension field has its own unit selector, and inch, foot, millimetre, centimetre and metre entries are all converted exactly before anything is multiplied.

    Where the numbers come from

    • Densities are nominal room-temperature values for the grade named, drawn from the usual mill and handbook figures.

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