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Aviation Pressure Altitude Calculator
x402
Aviation Pressure Altitude Calculator is a paid API for AI agents from aviation-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-30).
Calculates pressure altitude from field elevation and altimeter setting (inHg or hPa), returning both the exact ISA result and the 1000 ft/inHg rule-of-thumb approximation.
Price / call$0.02
Success—
StatusUnknown
How this service works
Pressure altitude from field elevation and altimeter setting (inHg or hPa), exact ISA result and the 1000 ft per inHg rule.
Output
Returns the computed pressure altitude in feet using the exact ISA formula, along with the rule-of-thumb approximation (1000 ft per inHg deviation from 29.92), the difference between pressure altitude and field elevation, and the altimeter setting expressed in both inHg and hPa units. Also includes station pressure in both units.
Example use cases
Pre-flight takeoff performance check
“Before my departure, can you calculate the pressure altitude at my home field? It's at 2800 feet elevation and the current altimeter setting is 30.05 inHg — I need it for my aircraft's takeoff distance chart.”
High-altitude airport density check
“I'm flying into Leadville, Colorado, which sits at about 9927 feet elevation. The altimeter is reading 29.45 inHg. What's the pressure altitude there, and how far off is the simple rule-of-thumb from the exact answer?”
Flight instructor scenario teaching
“My student is learning about pressure altitude corrections. Can you show what happens to pressure altitude at a 1500-foot elevation airport when the altimeter setting drops from standard 29.92 to 29.20 inHg — give me the exact ISA figure and the rule-of-thumb side by side?”
Technical details
Endpoint
GEThttps://aviation-calc.x402tookit.com/pressure-altitude?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, accurate pressure altitude computation for aviation pre-flight planning, aircraft performance charts, or student pilot instruction — especially when you want both the precise ISA-formula result and the 1000 ft/inHg rule-of-thumb in a single call. It is ideal for automation pipelines that ingest live METAR altimeter settings and field elevations to feed into downstream performance calculations.
Side effects
- Missing required query parameters (elevationFt or altimeter) returns an error
- Elevation outside the valid range (-1500 to 30000 ft) may produce an error or unexpected result
- Invalid unit string (not 'inhg' or 'hpa') may default to inHg or return an error
- Altimeter value inconsistent with the specified unit (e.g. passing 1013 when unit is inhg) will yield a nonsensical result
- Network or payment authorization failure returns a 402 or 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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