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Calcimator

Tsunami Travel Time Calculator

Calculate tsunami propagation speed and arrival time from ocean depth and distance using shallow water wave theory (v = √(g·d)).

Inputs

m
km

Results

Tsunami Speed

713.1 km/h

Travel Time

1.4 hours

Speed385 knots
Travel Time84.1 minutes
Estimated Wavelength237.7 km
Shoaling Amplification4.47×
Est. Shore Height (from 0.5 m deep)2.24 m
How to Use This Calculator
  1. Enter Average Ocean Depth and Distance to Coast.
  2. Review Tsunami Speed (km/h) and Travel Time (hours).
  3. Use Speed (knots) and Travel Time (minutes) to inform your decision.
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