Gardiners’ Decking Calculator Tool

Use our decking calculator to work out the estimated requirements to build the size of decking you require. Get the decking boards, timber, fascias and screws to make the perfect decking in your garden. If you need any help, do not hesitate to get in touch.

Select Decking Area

Please enter your project area below. If your project is not rectangular, then please either:

  • Contact us for additional help at 01782 334 532.
  • Use an estimated area for the calculation.


Please note that the inputs below are in meters, but can take up to 2 decimal places for more precise measurements.