Northshore Harbormasters Association









Distance and Chart Scale Calculators

Convert Nautical Miles to Statute Miles:

Enter Nautical Miles:
Statute Miles:

Convert Statute Miles to Nautical Miles:

Enter Statute Miles:
Nautical Miles:

Enter the Scale, Compute Nautical Miles, Statute Miles and Feet
For example, if the scale of the chart is 1:20,000 enter 20000

Enter Scale:
Nautical Miles Per Inch:
Statute Miles Per Inch:
Inches Per Nautical Mile:
Inches Per Statute Mile:
Feet Per Inch:




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