theres a button in the top right to switch from miles to kilometers, that does it globally and handles the calculation gracefully!
Edit: I've had my coffee now, and see what you mean. the API exposes it at /api/systems/{system}/lines/{line}, as well as aggregate for the system at /api/systems/{system}, working on supplying distance unit in api response now.
Edit: I've had my coffee now, and see what you mean. the API exposes it at /api/systems/{system}/lines/{line}, as well as aggregate for the system at /api/systems/{system}, working on supplying distance unit in api response now.