๐ Household
Smoke Detector Placement Calculator
Standards call for a smoke alarm inside every bedroom, outside each sleeping area and on every level of the home including the basement. Interconnecting them means a fire in the basement triggers the alarm outside the upstairs bedrooms.
How it works
Number of bedrooms
Number of levels
Separate sleeping area hallways
Basement or finished cellar
Total floor area
Minimum detectors required
Recommended number
Where to place them
Additional CO detectors
Frequently asked questions
How do I use the Smoke Detector Placement 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.