Gutter Calculator
Gutter length and a downpipe estimate.
One downpipe is allowed for every 8 metres of gutter.
Gutter
22 m
Downpipes
3
Worked example
22 metres of gutter, with a downpipe every 8 metres, needs 3 downpipes. The gutter length is the length you type.
FAQ
- Why one downpipe per 8 metres?
- It is a rough spacing guide. Local rules and rainfall can ask for closer spacing.
- Are corners and stop ends included?
- No. Count corners, outlets, and stop ends from the plan.
- What length should I enter?
- The total run of gutter, in metres, including each side of the building you are guttering.