Enter the hight tide level and low tide level into the calculator to determine the tidal range. This calculator can also determine any of the variables given the others are known.

Tidal Range Formula

The following formula is used to calculate the tidal range.

TR = HT - LT


  • TR is the tidal range (meters) HT is the high tide level (meters) LT is the low tide level (meters)

To calculate the tidal range, subtract the low tide level from the high tide level. The result is the tidal range, which represents the vertical difference between the high tide and the low tide.

What is a Tidal Range?

A tidal range is the difference in water level between high tide and low tide. It is the vertical distance measured in feet or meters. The tidal range varies in different parts of the world and is influenced by the position of the moon, sun, and the specific geographical features of a particular coastline. The largest tidal range occurs during the full moon and new moon when the gravitational forces of the sun and moon align, creating what is known as a spring tide.

How to Calculate Tidal Range?

The following steps outline how to calculate the Tidal Range.

  1. First, determine the high tide level (HT) in meters.
  2. Next, determine the low tide level (LT) in meters.
  3. Next, gather the formula from above = TR = HT – LT.
  4. Finally, calculate the Tidal Range.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

high tide level (HT) = 5 meters

low tide level (LT) = 2 meters