# No-Fly Calculator

> Work out the latest time a diver can surface before their flight.

https://docs.seascape.bz/check-in/no-fly-calculator

The **No-Fly Calculator** works out the latest time a diver should finish diving before a flight.

Enter the **Flight date**, the **Flight time** and the **Dive profile**: a single dive, repeat or multi-day diving, or decompression diving. It shows the surface deadline and how long is left.

It uses the DAN guidance of 12 hours after a single dive, 18 hours after repeat or multi-day diving, and 24 hours after decompression diving. It is guidance, not a guarantee, so divers should still follow their computer.

Customers can use the same calculator at seascape.bz/no-fly.