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PVC block weight calculator

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

Total weight
28kg
= Exact PVC block weight
Weight of one block
28
Volume of one piece
20 000
Density used
1400 kg/m3
Show the working
  1. Length = 1000
  2. Width = 200
  3. Height = 100
  4. Number of pieces = 1
  5. volume_mm3 = 1000 * 200 * 100 = 20 000 000
  6. Volume of one piece = 20 000 000 / 1000 = 20 000
  7. Density used = 1400 = 1400
  8. Weight of one block = 20 000 000 * 1400 / 1e9 = 28
  9. Total weight = 28 * 1 = 28

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 = length x width x height
    • 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 block?

    Volume = length x width x height. 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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