The five calculators from the iOS app, running here so the numbers can be checked without an iPhone. Same formulas, same refusals, same rounding — and a verification panel that holds this page to the values the app's own tests are held to.
The iOS app is on the App Store, offline in your pocket. The manual explains what each screen is asking for, and every screen in it links back to this page. Feedback or a feature request — get in touch.
This page is a step ahead of the App Store: on Beam, working the throw out from a trim and a mark on the deck, and the pool's length front to back, arrive in the app with 2.3.