Home › 737 FMC
A free online 737 FMC for flight simulators
Practise with a Boeing 737-style CDU in your browser: scratchpad, line select keys, route and legs pages, performance and takeoff reference.
What you can do
- Set origin, destination and runways, then build the route on the RTE and LEGS pages.
- Add, remove or direct-to waypoints and enter altitude and speed constraints.
- Import your SimBrief flight plan with every waypoint.
- Enter weights on PERF INIT and read V1, VR, V2, trim and flex on TAKEOFF REF.
- Read Vref for each flap setting on APPROACH REF.
Navigation data
All airports and runways are built in, along with VOR and NDB stations from the OurAirports public-domain database. For airways and waypoints you can import your SimBrief plan or load the data files that come with your own simulator, which stay on your device.
Works on your phone
The keys are sized for touch, and the whole unit scales to your screen. Nothing needs installing, and you can add it to your home screen.
Questions
Is this a copy of the real Boeing FMC?
No. It is an independent, simplified CDU for simulation. It follows the layout and logic enough to practise procedures, but it is not certified avionics.
Does it connect to my simulator?
Not yet. You enter data by hand or import it from SimBrief.
Does it include SIDs and STARs?
Not yet. Routes use waypoints from SimBrief or your own data files.
More tools and guides
- Takeoff speedsV1, VR, V2, trim, flex
- Landing speedsVref, Vapp, distance
- Runway visualizerWatch the roll
- 737 FMCRoute, legs, performance
- Route plannerDistance, TOD, fuel
- AirportsRunways for 6,000+ airports
For flight simulation use only. The results come from a simplified physics model, not from manufacturer data, and must never be used for real-world flight planning.