Add up planters, wet soil, furniture and people to see how close you are to a typical balcony load limit.
How this works
Wet potting mix weighs about 1.2 kg per litre, plus about 15% for the pot. Allow 80 kg per person. Most residential balconies are designed for 2 to 3 kN/m² (about 200 to 300 kg per m²) spread evenly. We show your average load against the limit you pick.
Questions people ask
How do I use the Balcony Weight Check tool?
Fill in the fields, starting with “Balcony length”, “Balcony depth” and “Large planters”, and change any other options that match your home. The answer, a drawing and practical tips update as you type, and the Copy link button saves your numbers in a link you can share.
Is the Balcony Weight Check tool free?
Yes. The Balcony Weight Check tool is free, with no sign-up, and works on phones, tablets and computers. The results are estimates to help you plan, so check with a qualified professional before structural, electrical, gas or plumbing work.