About
Circuit Mapper is built by one person who got tired of the card inside the panel door being wrong and was sick of logging everything in spreadsheets. It does one job: help you figure out which breaker controls what in your house, record it properly, and print a breaker list you can trust.
Circuit Mapper is in public beta and may have rough edges. Issues or ideas? Email hello@circuit-mapper.com.
What’s free
The whole mapping workflow is free: rooms, devices, breakers, mapping sessions, and your saved map. So is downloading your data. There is nothing to buy on this site.
Your data is yours
Your map is saved to your account. A browser can clear everything a site has stored after a week or two without a visit; the copy in your account survives that. Syncing between your phone and your computer comes with it. You can download the whole thing as a plain JSON file at any time and take it anywhere. There is no lock-in, and you will never have to pay to get your own data back.
What this app is not
Circuit Mapper helps you work out which breaker controls what. It walks you through turning breakers off one at a time, keeps track of what went dark as you go, and can direct a helper at the panel while you do it. Then it keeps what you found: a map you can search by room or by breaker, and a clean breaker list to print for the panel door. It does not make electrical work safe, it does not replace a licensed electrician, and it does not inspect, approve, or certify anything. If something at your panel looks wrong, stop and call an electrician.
Questions, or something broken
Email hello@circuit-mapper.com and a person will answer.