Density Altitude Calculator
Density altitude from pressure altitude and temperature — affects engine/prop performance.
How to Use
- Enter the field elevation and the current altimeter setting (inHg) — pressure altitude is computed for you.
- Enter the outside air temperature (OAT) in °C.
- Read the density altitude on the hero and the live performance gauge.
- Check the verdict pill for the takeoff / climb performance impact.
- Cross-check altitudes with the Altitude Converter.
| Standard day, sea level | 0 ft DA |
| Denver, hot summer afternoon | ≈ 8.6k ft DA |
| Leadville CO — highest US airport | ≈ 10k ft DA |
| Hot lowland field, 38 °C | ≈ 3.4k ft DA |
| High & very hot — danger zone | ≈ 6.5k ft DA |
Show Work
Formulas
About the Density Altitude Calculator
Working on flight planning and aircraft performance? The Density Altitude Calculator is a free browser tool that gives you the answer in seconds. Density altitude from pressure altitude and temperature — affects engine/prop performance.
How it works
Put each value in its box and read the answer as you go. Because it recalculates live, you can play with the inputs to see how each one moves the result — handy for checking your own working or planning ahead. Everything happens on your device, so it is fast and private.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
How do I use the Density Altitude Calculator?
Simply type your numbers and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.
Do I need to install or sign up for anything?
Not at all — it runs in the browser with nothing to install and no account. After it loads once, it even works without an internet connection.
Is my information private?
Yes. Everything happens in your browser. Nothing you type is sent to a server or saved anywhere.
Common Use Cases
Get an answer fast
Type what you have and get the answer in seconds — on a phone, tablet, or computer.
Try different numbers
Change one thing and watch the answer change. It is an easy way to compare your choices.
Nothing to set up
Open the page and start. There is nothing to install, and no account to make.
No data leaves your browser
The tool runs locally, so whatever you enter stays with you and only you.
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