๐ฑ Gardening
Greenhouse Size Calculator
The practical limit on a greenhouse is bench space rather than floor area: a 6 by 8 foot greenhouse with benches on both sides gives about 24 square feet of growing surface. Allow roughly one and a half square feet per potted plant on the bench.
How it works
Number of plants to grow
Bench space per plant
Bench layout
Path width
Eave height
Bench space required
Minimum greenhouse width
Minimum greenhouse length
Floor area
Internal volume
Note
Frequently asked questions
How do I use the Greenhouse Size Calculator?
Fill in the fields above โ the result recalculates instantly as you type. Everything runs in your browser, so the values you enter are never collected or stored.
Is this calculator free?
Yes. It is completely free, requires no account, and works on phones, tablets and desktops.