Leg fuel required API

Computes trip fuel from distance, ground speed and burn rate, adding reserve and taxi/takeoff allowances for total required fuel. Answers 'How much fuel for 300 nm at 150 kt burning 10/hr?', 'What is my total block fuel with a 45-minute reserve?'.

Price$0.04per request

MethodPOST

Route/v1/nav/fuel-required

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

aviationfuelfuel-planningreserveburn-rateflight-planningendurancerange

API URLhttps://x402.hexl.dev/v1/nav/fuel-required

Integration docs

Example request

{
  "distanceNm": 300,
  "groundSpeedKt": 150,
  "burnRatePerHour": 10,
  "reserveMinutes": 45
}

Example response

{
  "timeEnRouteHr": 2,
  "timeEnRouteMin": 120,
  "tripFuelUnits": 20,
  "reserveFuelUnits": 7.5,
  "taxiTakeoffUnits": 0,
  "totalFuelRequiredUnits": 27.5,
  "interpretation": "120 min en route -> 20 units trip fuel; 27.5 units total incl. 45 min reserve."
}

Input schema

{
  "type": "object",
  "required": [
    "distanceNm",
    "groundSpeedKt",
    "burnRatePerHour"
  ],
  "properties": {
    "distanceNm": {
      "type": "number",
      "examples": [
        300
      ]
    },
    "groundSpeedKt": {
      "type": "number",
      "examples": [
        150
      ]
    },
    "burnRatePerHour": {
      "type": "number",
      "examples": [
        10
      ]
    },
    "reserveMinutes": {
      "type": "number",
      "examples": [
        45
      ]
    },
    "taxiTakeoffUnits": {
      "type": "number",
      "examples": [
        0
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}