Service Ceiling Estimator
Estimate service ceiling from sea-level climb rate and climb-rate lapse with altitude.
Service ceiling
10,447.27 m
34,276 ft at threshold climb rate
Absolute ceiling
10,909.09 m
35,791 ft at zero climb rate
Climb margin
461.82 m
between service and absolute ceiling
Ceiling profile
Service ceiling is the altitude where the climb-rate margin reaches the selected minimum.
100 ft/min threshold
Climb-rate lapse
The chart uses the same linear lapse model as the result.
Open Source and Easy to Use Elsewhere
This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.
Open source: review the implementation and see how the results are produced.
Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.