Questions, corrections or an idea for a new calculator? Email homeandyardcalc@gmail.com. I aim to reply within a few days.
Reporting a mistake
If a result looks wrong, please include:
- the link to the calculator
- the numbers you entered
- the result you expected, and where that figure came from
That makes it quick to check and fix.
What I can’t help with
I can’t give engineering advice for a specific site, price quotes, or approval for building work. For those, talk to a local contractor, engineer or your building department.