This calculator allows you to convert from Fathom (US survey) to Nautical league (UK) and in a reverse direction. To convert from Fathom (US survey) to Nautical league (UK), enter the amount of Fathom (US survey) into the first input and to convert from Nautical league (UK) to Fathom (US survey), enter the amount of Nautical league (UK) into the second input.