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Aviation Calculators – Fuel, Time & Distance (E6B)
x402
Aviation Calculators – Fuel, Time & Distance (E6B) 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).
Solves E6B flight computer arithmetic for any two of distance, groundspeed, and time, plus fuel burn, reserve fuel, and range calculations.
Price / call$0.02
Success—
StatusUnknown
How this service works
E6B arithmetic: give any two of distance, groundspeed and time for the third, plus fuel burn, reserve and range.
Output
Returns a JSON object with the computed unknowns filled in (timeMin, timeHhMm, distanceNm, groundspeedKt), plus tripFuel, reserveFuel, enduranceHours, enduranceHhMm, enduranceToReserveHhMm, rangeNmToReserve, maxRangeNmNoReserve, a human-readable summary, a verdict (e.g. pass/fail on fuel check), a list of reasons, and a disclaimer. Fields not computable from the inputs provided are returned as null.
Example use cases
Pre-flight fuel check for VFR night flight
“I'm flying 220 nm tonight at 118 knots groundspeed, burning 9 gallons per hour, and I have 38 gallons usable. Apply a 45-minute night VFR reserve and tell me my trip fuel, reserve fuel, endurance, and whether I have enough to make it safely.”
Back-solve groundspeed from ATC time and distance
“ATC just told me I covered 95 nm in 52 minutes — can you calculate my groundspeed from that?”
IFR range planning with 45-minute alternate reserve
“I need to know my range to reserve and max range with no reserve: I'm burning 11.2 gallons per hour at 140 knots, I have 60 gallons usable, and I need a 45-minute IFR reserve.”
Technical details
Endpoint
GEThttps://aviation-calc.x402tookit.com/fuel-time-distance?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need quick E6B-style arithmetic for a single flight leg — especially when checking fuel reserves, computing flight time, or back-solving groundspeed. It is purpose-built for aviation calculations with correct unit handling (knots, nautical miles, minutes) and built-in VFR/IFR reserve logic, making it preferable to a generic calculator for any pilot-facing agent or flight-planning workflow.
Side effects
- Missing required combination of inputs — at least two of distance, groundspeed, or time must be provided for the triangle solve
- Out-of-range reserveMin value (must be 0–240 minutes)
- Negative or zero values for speed, distance, or fuel causing nonsensical results
- Insufficient inputs to compute fuel outputs if fuelFlowPerHour or fuelOnBoard are omitted
- HTTP 402 if the x402 payment header is missing or the USDC balance is insufficient
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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