AmpSizerJob planners
One circuit is a calculation. A job is a project — the whole panel on one sheet, a load worksheet for the service, and a takeoff for the van.
Backup Power Load Plan
Every load you intend to back up, with its running watts and starting surge, totalled into the generator size that covers both.
Dwelling Load Worksheet
The standard-method load calculation for a house, line by line, totalled into the service size — the sheet a permit application asks for.
Electrical Test Schedule
Set the interval once and get the next twelve dates for GFCI tests, panel checks and thermal scans, with an email before each one.
Electrician Quote Comparison
Materials, labour, permit and making good for each quote in one table — the total that decides, not the number on the front page.
Panel Circuit Schedule
Every circuit in the panel on one sheet — load, breaker and conductor per row, totalled against the service, saved and shareable.
Wire and Conduit Takeoff
Every run with its length, conductor count and price per foot, totalled into a material cost — the sheet that becomes the quote.
Free to use, Pro to keep
Every tool on this page works straight away, with no account and no limit on how often you use it. Put your numbers in and you get the answer, the same as on the rest of the site.
What Pro adds is memory and reach. It saves a setup to your account so it is there on your phone as well as the machine you built it on. It turns a result into a page you can send to somebody. It emails you when a date you set is coming, instead of leaving that to your own memory. And it takes the ads off — here and on every other site we run, on one subscription.
These exist because sizing one circuit is a question and wiring a building is a list. A panel schedule, a load worksheet and a material takeoff are all the same arithmetic as the calculators on this site, kept in rows instead of thrown away when the tab closes.
See what is included on the Free and Pro page.