# Aviation Glide Ratio Calculator

> Aviation Glide Ratio 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 2026-10-29).

Calculates glide distance, time, and sink rate from altitude above ground, glide ratio, and optional airspeed and wind components.

## Facts

- Endpoint: GET https://aviation-calc.x402tookit.com/glide-ratio?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aviation-glide-ratio-calculator-2ca0dfcd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ae40uT2I91EL985UoHDcp

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability aviation-glide-ratio-calculator-2ca0dfcd
```

Example prompt: I'm at 9,500 feet AGL with a glide ratio of 10 to 1 and my best-glide speed is 65 knots with a 15-knot headwind — how far can I glide, how long will it take, and what's my sink rate?

## When to prefer this

Use this endpoint when you need precise, multi-unit glide performance calculations for real aviation scenarios — engine-out emergencies, cross-country glide planning, or training exercises. It uniquely supports wind adjustment (headwind/tailwind) and returns comprehensive outputs including sink rate, glide time, and both still-air and wind-corrected distances. Prefer it over generic physics calculators because it uses aviation-standard units and covers the full range of aircraft from light singles (glide ratio ~9) to sailplanes (30-60).

## Known failure modes

- Missing required altitudeAglFt or glideRatio parameters returns a validation error
- Providing headwindKt without glideSpeedKt may result in wind-adjusted outputs being null or omitted
- Out-of-range values (e.g. altitude below 100 ft or above 60000 ft, speed outside 20-300 kt) may trigger rejection or clamping
- Non-numeric parameter values return a parse error

## How this service works

Glide distance, time and sink rate from altitude above ground, glide ratio and best-glide speed, with headwind or tailwind.

## Output

Returns glide distance in multiple units (nautical miles, kilometers, feet, statute miles) for still air and with wind adjustment, glide time in minutes, sink rate in feet per minute, groundspeed in knots, and effective ground glide ratio, along with echoed inputs and any advisory notes.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "altitudeAglFt",
      "glideRatio"
     ],
     "properties": {
      "glideRatio": {
       "type": "number",
       "description": "Lift-to-drag glide ratio, for example 9 for 9 to 1 (a light single is about 9, a sailplane 30 to 60)"
      },
      "headwindKt": {
       "type": "number",
       "description": "Headwind in knots, negative for a tailwind, -100 to 100 (needs glideSpeedKt)"
      },
      "glideSpeedKt": {
       "type": "number",
       "description": "True airspeed at best glide in knots, 20 to 300, for time, sink rate and wind"
      },
      "altitudeAglFt": {
       "type": "number",
       "description": "Height above the ground in feet, 100 to 60000"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
       ]
      },
      "reasons": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "summary": {
       "type": [
        "null",
        "string"
       ]
      },
      "verdict": {
       "type": [
        "null",
        "string"
       ]
      },
      "degraded": {
       "type": [
        "boolean",
        "null"
       ]
      },
      "disclaimer": {
       "type": [
        "null",
        "string"
       ]
      },
      "glideRatio": {
       "type": [
        "null",
        "number"
       ]
      },
      "headwindKt": {
       "type": [
        "null",
        "number"
       ]
      },
      "notChecked": {
       "type": [
        "array",
        "null"
       ],
       "items": {
        "type": "string"
       }
      },
      "sinkRateFpm": {
       "type": [
        "null",
        "number"
       ]
      },
      "glideSpeedKt": {
       "type": [
  
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aviation-glide-ratio-calculator-2ca0dfcd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aviation-calc.x402tookit.com](https://www.zero.xyz/host/aviation-calc.x402tookit.com/llms.txt)