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How to calculate how much decking you need

Creating an inviting outdoor space with floor decking that clicks together is easy when you’ve worked out how much flooring to buy. Check out our simple guide below to find out how much flooring you need.

An outdoor space where RUNNEN floor decking in artificial grass and wood form different zones for eating and relaxing.
An outdoor space where RUNNEN floor decking in artificial grass and wood form different zones for eating and relaxing.

1. Find the surface area

Start by measuring the length and width of your outdoor space. To find the total area, multiply the length by the width. You can then calculate any areas to be subtracted from the total, such as pillars or corners, using the same method.

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Wooden flooring that fits the outdoor space perfectly, with a potted plant in a metal plant pot and a white wall behind.
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2. Calculate how many packages you need

Look for the total area included in each pack of floor decking, and divide that number by your surface area. For example, square tiles come in packs that cover 9 square feet, so you need to divide the surface area you found by 9. Don’t forget to round up the number so you have enough tiles.

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Hands installing a section of floor decking in artificial grass next to dark grey decking.
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A spacious outdoor terrace with gray decking and a hammock hanging in one corner with striped cushions on top.

Get going with ready-made calculations for UTLÄNGAN decking

Want to buy UTLÄNGAN decking but confused by all the math? To help you out we’ve listed some of the most common surface areas with the number of packages you’ll need below.*

  • 25 ft2 needs 3 packages
  • 50 ft2 needs 6 packages
  • 75 ft2 needs 8 packages
  • 100 ft2 needs 11 packages
  • 150 ft2 needs 17 packages
  • 200 ft2 needs 21 packages
  • 250 ft2 needs 27 packages
  • 300 ft2 needs 32 packages

*The exact number of packages you need may differ depending on the shape of your area, some areas may need an extra pack or two.

Get going with ready-made calculations for MÄLLSTEN, RUNNEN and ALTAPPEN decking

Want to buy MÄLLSTEN, RUNNEN or ALTAPPEN decking but still not sure how much you’ll need? We’ve listed some of the most common surface areas with the number of packages you’ll need below.*

  • 25 ft2 needs 3 packages
  • 50 ft2 needs 6 packages
  • 75 ft2 needs 9 packages
  • 100 ft2 needs 12 packages
  • 150 ft2 needs 18 packages
  • 200 ft2 needs 23 packages
  • 250 ft2 needs 29 packages
  • 300 ft2 needs 35 packages
  • 350 ft2 needs 41 packages

*The exact number of packages you need may differ depending on the shape of your area, some areas may need an extra pack or two.

A balcony with patterned MÄLLSTEN decking, a lemon tree in a pot and a white plastic chair.