Density Altitude
No current METAR available. Enter expected conditions manually.
Auto-Fill from METAR

ISA Std Temp

15.0°C

Actual OAT

15°C

Deviation

0.0°C

Density Altitude0′
-2,000′2,000′5,000′8,000′12,000′
Pressure Altitude0′
Low — Minimal Impact
  • •Standard performance expected
  • •Normal operations
Tip

Density altitude is the altitude at which the aircraft "thinks" it's flying based on air density. Higher DA means thinner air → less lift, less engine power, longer takeoff rolls. The three H's that increase DA: Hot, High, Humid.

When a METAR is loaded, this uses the NWS virtual-temperature method — the same humidity-aware calculation ForeFlight uses, so the number matches what you read there. Without weather data it falls back to the dry-air E6B / PHAK formula (DA = PA + 120 × ΔT).

Read the full density altitude guide →
Next: Weight & Balance →

Training aid only — verify all data against your POH and current FAA publications.