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Rule Of Twelfths Tide Height Calculator
Estimate tide height during the rise or fall.
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Estimate tide height during the rise or fall.
Rule Of Twelfths Tide Height Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: Use whole hours.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Rule Quick Guide
Typical values for reference.
| Hour | Twelfths | Height of 4.8 | Notes |
|---|---|---|---|
| 1 | 1/12 | 0.40 | Slow |
| 2 | 3/12 | 1.20 | Rising |
| 3 | 6/12 | 2.40 | Mid |
| 4 | 9/12 | 3.60 | Fast |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Rule Of Twelfths Calculator FAQ
Answers to common questions about this calculator.
Approximation.
It gives a quick estimate of rule of twelfths tide height from the values you enter.
No. It is a planning estimate, so check important figures with a professional or official source.
Yes. Edit any field and the result updates when you calculate.