Jobsite calculators

Marks on the pipe, not just numbers.

StubCalc builds calculators for electricians and the trades. Every result tells you where to mark, which way to face the tool and what to do first.

The apps

One family, one way of working. Each app covers one trade and shares the same keypad, units and result layout.

Conduit bending: offsets, saddles, 90s, kicks and more, with every mark measured from the pipe end.

Pipefitting calculators.

Later

Stairs and rafters for carpenters.

Later

The everyday calcs are free and complete, with no time limit and no ads.

Pro is a one-time purchase. No subscription and no account.

Basements, crawl spaces, new builds without signal. Everything runs on the phone.

Every number has its method, constants and source one tap away.

Both languages from day one, reviewed by people in the trade.

Big keys, big numbers and high contrast for sunlight.