{"uid":"cap_Ae40uT2I91EL985UoHDcp","slug":"aviation-glide-ratio-calculator-2ca0dfcd","name":"Aviation Glide Ratio Calculator","description":"Glide distance, time and sink rate from altitude above ground, glide ratio and best-glide speed, with headwind or tailwind.","url":"https://aviation-calc.x402tookit.com/glide-ratio?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"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 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glide distance, time, and sink rate from altitude above ground, glide ratio, and optional airspeed and wind components.","exampleAgentPrompt":"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?","exampleUseCases":[{"title":"Engine-out emergency range planning","prompt":"My engine just quit and I'm at 6,000 feet AGL — with a glide ratio of 9 and a best-glide speed of 70 knots, how far can I glide and how many minutes do I have to find a landing spot?"},{"title":"Sailplane cross-country glide planning","prompt":"I'm flying a sailplane with a glide ratio of 45 at 80 knots true airspeed and I'm at 4,000 feet AGL with a 20-knot tailwind — what's my glide distance in nautical miles and what's my effective ground glide ratio?"},{"title":"Pilot training sink rate calculation","prompt":"For a training scenario: aircraft at 3,000 feet AGL, glide ratio of 10, best-glide speed 60 knots, no wind — what is the sink rate in feet per minute and total glide time?"}],"resultDescription":"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.","failureModes":["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"],"whenToPreferThis":"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).","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:11:21.247Z","isFirstParty":false,"canonicalSlug":"aviation-glide-ratio-calculator-2ca0dfcd"}