Flight calculators
Quick utilities for descent planning, climb planning, runway winds, and high-altitude performance.
Top of Descent
When to start descending. A typical jet descent uses about 3nm per 1000ft to lose.
Start descent at154.0 nm out
Time to descend22.0 min
Rule of thumb4.67 nm per 1,000 ft
Descent angle2.0°
Top of Climb
Distance and time to reach cruise altitude. Useful for VFR climbs and short-leg planning.
Reach cruise at84.3 nm
Time to climb18.1 min
Climb gradient2.59 nm per 1,000 ft
Crosswind component
Crosswind and head/tailwind for a given runway. Runway heading is the magnetic heading in degrees (e.g., 280 for runway 28).
Crosswind2.6 kt (from left)
Head/tailwind14.8 kt headwind
Wind angle10° off runway
Density altitude
Altitude the aircraft 'feels' it's at. High DA means thinner air, reduced engine power, and longer takeoff rolls.
Density altitude7,769 ft ⚠
Pressure altitude5,008 ft
ISA temperature5.0 °C
Deviation from ISA+23.0 °C
DA is more than 2,000 ft above field elevation - expect noticeably reduced performance.
Calculators use standard simplified formulas. For real-world flight, always cross-check with your aircraft's performance charts.