波の高さのコンバーター
異なる波高さ測定(顔の高さ、ハワイアンスケール、オーシャンズウェル)間で変換します.
Wave Height Converter
Face height is measured from trough to crest. Hawaiian scale is about half. Use these conversions when reading forecasts.
Convert wave measurements between face height, Hawaiian scale, and swell height. Understand the difference between how surfers measure waves and how meteorologists forecast them, ensuring accurate reading of wave reports.
Características Principales
Face height to Hawaiian scale conversion (50% reduction)
Face height to swell height conversion (60% reduction)
Instant dual-result output for both measurement systems
Industry-standard conversion ratios used by professionals
No registration or subscriptions required
Works offline in your browser
How to Use Wave Height Converter
Input Face Height
Enter the wave face height in feet. This is the measurement from the trough (bottom) to the crest (top) of the wave.
Click Convert
Press the Convert button to instantly calculate both Hawaiian scale and swell height equivalents.
Review Both Scales
See the Hawaiian Scale result (approximately 50% of face height) and swell height (approximately 60% of face height).
Compare to Forecasts
Use the converted measurements to match forecast reports when checking wave predictions for your session.
Casos de Uso
Surfers comparing local wave reports with international forecast scales
Understanding forecast discrepancies between Hawaiian and swell measurements
New surfers learning industry terminology and measurement conventions
Trip planning to unfamiliar breaks where local reporting uses different scales
Preguntas Frecuentes
Why do surfers and meteorologists measure differently?
Surfers measure face height (trough to crest), while meteorologists measure swell height (energy from the ocean). Face height is always larger, which is why 8-foot swell equals about 15-foot waves to surfers.
What is Hawaiian scale?
Hawaiian scale is one system for describing wave size, roughly half the face height. When Hawaiians say 6-foot, it means about 12-foot face height to California surfers.
How do I know which scale my forecast uses?
Check your forecast source details. US mainland usually lists face height, Hawaii uses Hawaiian scale, and NOAA uses swell height. This converter helps translate between all three.
Is this tool free with no ads?
Yes, free with no registration, ads, or data tracking. Runs entirely in your browser.
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