Tide Time Calculator

Estimate upcoming high and low tides from a known high tide time.

Known high tide
time

Enter the time of a known high tide.

Tide cycle
(hours)

Typical lunar tide cycle is about 12.42 hours.

Tide range
(meters)

Difference between high and low water level.

Main result
view

Choose the main output.

Main result

Next low tide

Approx. halfway between high tides

Educational estimate only. Real tides depend on coastline shape, wind, pressure, storms, local geography, and official tide tables.