Secondary Port Tide Offset
Published offsets are given as a time difference and a height difference against a standard port. This page applies both, then reports the result as a window so the rounding is visible.
Result
Values update as you type. Nothing is sent anywhere.
Worked example
More calculatorsMove a standard-port high water time and height to a secondary port. The page computes in the browser and does not store inputs. For a printed version, use the matching card in the tools directory.