Altitude Converter
Convert between feet, meters, and flight levels — with a live altitude ladder and ICAO standard pressure at altitude.
How to Use
- Enter any altitude — the others convert instantly, and the ladder marks where you are.
| Sea level | 0 ft |
| Traffic pattern (AGL) | 1,000 ft |
| Class B top | 10,000 ft |
| FL180 / transition (US) | 18,000 ft |
| Mt. Everest summit | 29,032 ft |
| Airliner cruise (FL350) | 35,000 ft |
| Bizjet ceiling (FL450) | 45,000 ft |
Show Work
Notes
About the Altitude Converter
The Altitude Converter is a free tool for flight planning and aircraft performance. It runs right in your web browser, so there is nothing to download. Convert between feet, meters, and flight levels — with a live altitude ladder and ICAO standard pressure at altitude.
How it works
Enter a number and choose your units — the converted value shows instantly. Everything runs locally, so nothing you type leaves your device. Double-check the direction of the conversion and you are set.
Want the deeper story? The Knowledge Base explains the ideas behind the tools in more detail.
Frequently Asked Questions
How do I use the Altitude Converter?
Simply type or paste your value and read the result, which refreshes the instant you change something. There is nothing to submit and nothing to wait for.
Is it free? Does it work without internet?
Yes to both. It is free with no sign-up, and once the page has loaded it keeps working even with no internet.
Where does my data go?
Nowhere — every calculation runs on your own device. Nothing you enter is uploaded, logged, or stored.
Common Use Cases
Learn while you do it
Seeing what you put in and what comes out helps you understand how they fit together.
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.
Safe and private
Everything you type stays on your device. Nothing is sent to a server or saved.
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