Cloud Base Calculator
Estimate the cloud base altitude from temperature and dew point.
How it works
Fill in the 2 fields above and Cloud Base Calculator calculates the result instantly, recalculating as you change any value. It applies the formula base(m) ≈ 125 × (T − Td). The math runs locally in your browser — nothing is sent to a server.
Formula
base(m) ≈ 125 × (T − Td)Examples
- Temperature 25 °C, Dew point 15 °C → Cloud base: 1,250 m
Frequently asked questions
How do I use the Cloud Base Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Cloud Base Calculator use?
It uses base(m) ≈ 125 × (T − Td). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Cloud Base Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Cloud Base Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on weather & nature and the rest of the platform, you can use it as often as you like.
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