Cornice Length Calculator | How Much Coving Do I Need?

Use our free cornice and coving calculator to work out how many lengths of plaster cornice you need for your room. Simply enter the room dimensions and we will calculate the total length required, including allowance for corners.

How to Use the Calculator

  • Enter the length and width of your room in metres
  • The calculator adds the perimeter and accounts for corner cuts
  • Kayvic plaster cornice is supplied in standard 3-metre lengths
  • We recommend adding one extra length for waste

For help choosing the right cornice profile, browse our plaster cornice range or contact us for advice. Family-run from Ammanford, South Wales since 1976.