Aviation Tools for Pilots

Most pilots already have a calculator app on their phone and a stack of bookmarks for tail number lookups. We built these because we needed them ourselves while shipping Sky Duty's flight management app — so we put them online for anyone to use. No account, no email gate, no popup asking for your phone number.

Sky Duty is a flight department operations platform: pilots, owners, and small charter teams use it to schedule flights, log hours, and keep maintenance current. The tools on this page are utilities the same operators reach for. Use them, bookmark them, share them — they're free.

While building Sky Duty's logbook and maintenance and expense tracking features, we kept opening browser tabs to do the same conversions and lookups: tach-to-Hobbs differences, fuel weight from gallons, an N-number registration check before adding a tail to a fleet. The math is straightforward, but the existing free tools all wanted an email address first or buried the answer behind three banner ads.

So we built clean versions for ourselves and shipped them publicly. They're cheap to host, useful to pilots outside our customer base, and they're a fair representation of how the rest of the product is designed: practical, fast, no friction. If you want to go deeper, the guides and tutorials walk through the app side of the house.

The list of utilities we'd like to publish here is longer than the list we've shipped. On our short list: a weight and balance check for common GA aircraft, a Hobbs-versus-tach delta calculator for owners reconciling rental records, a fuel cost estimator that pulls a recent average per gallon, a flight time calculator for trip planning, and a density altitude calculator for hot-and-high operators.

We're not promising any of these by a specific date — we ship them when they're solid. Same rules apply when they land: free, no account, no popup. If there's a tool you'd use weekly that we haven't mentioned, the contact form is the right place to send it.

The free tools on this page each cover one job. Sky Duty itself is the operations platform: a single offline-first iOS app for scheduling, logbook, maintenance, expenses, fleet, and crew. Everything stays in sync between your iPhone and iPad, even when you're out of cell range. Receipts get scanned, Hobbs and tach times follow each tail, and the next trip drops onto a Gantt timeline you can read at a glance.

If you want the full picture of what's in the box, see all features. When you're ready, download Sky Duty and you'll be looking at your own fleet within a few minutes of opening it.