Performance Takeoff & Climb
Your takeoff performance, in seconds.
Free on web · Paid on iOS and Android
Takeoff distance, climb rate, density altitude — corrected for today's conditions and compared against your standard performance. Green, orange, red: you instantly know if the margin is safe.
A short runway. A hot afternoon. A high elevation field.
Put them together and your takeoff distance can double while your climb rate is halved. Performance Takeoff & Climb applies the corrections, compares to your aircraft card, and gives you a visual verdict before you'd finished reaching for your pencil.
Three results, one decision.
Enter your parameters on the left, read the three result cards on the right. No ambiguity: each card carries a colored status and a percentage delta.
Takeoff
- ›Calculated distance, corrected for altitude + temperature
- ›Delta vs aircraft card (% vs standard)
- ›Runway usage with visual gauge
- ›"Exceeded" alert if the runway is too short
Climb
- ›Actual climb rate (ft/min)
- ›Performance level shown as a percentage
- ›Status: Excellent, Normal, Poor, Dangerous
- ›Degraded climb warning past a critical threshold
Density altitude
- ›Altitude felt by the aircraft
- ›Computed from field elevation and OAT
- ›Instant readout: better than standard, normal, degraded
- ›The number pilots forget to look at
Green, orange, red. No interpretation needed.
The same parameters tell two very different stories depending on the field and the weather. Performance surfaces them instantly.
Low field, cool air, long runway: 19 % runway usage, +8 % climb rate vs standard, density altitude below field elevation. Comfortable takeoff.
High field, hot air, short runway: takeoff distance exceeded, –71 % climb rate, density altitude at 9,580 ft. You're not flying today.
Built for safety
Takeoff distance
Corrected for today's conditions, with an alert the moment available runway falls short.
Actual climb rate
Not a brochure number: your real rate, given today's density altitude.
Density altitude
Computed from elevation and temperature — the number that actually governs performance.
Visual status
Excellent, Normal, Poor, Exceeded — legible in full sunlight on the tarmac.
Airfield database
Pick your departure field: elevation and runways fill in automatically.
Your aircraft card
Enter your standard distance and climb rate once: Performance corrects off your POH figures.
Instant
Results recalculate on every parameter change — no button to press.
Web, iOS, Android
Free in the browser, paid native app on iOS and Android for quick offline access.
Available everywhere
Try it free in the browser, then carry it into the cockpit on iOS or Android.
Calculate before you take off.
Less than a minute to enter your parameters. One color to decide. The reflex that can save a flight.
Try it on web