{"uid":"cap_VGTATpKemZGsOB4_OhNM7","slug":"automotive-acceleration-performance-estimator-3511e43b","name":"Automotive Acceleration & Performance Estimator","description":"Estimate quarter-mile time and trap speed from weight and horsepower (Hale), plus a power-limited lower bound for 0-60 mph.","url":"https://automotive-calc.x402tookit.com/acceleration-estimate?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":["weightLb","horsepower"],"properties":{"powerAt":{"type":"string","description":"crank (default) or wheel: where the horsepower figure was measured"},"weightLb":{"type":"number","description":"Weight with driver in pounds, 500 to 20000"},"horsepower":{"type":"number","description":"Engine power in horsepower, 10 to 5000"},"drivetrainLossPercent":{"type":"number","description":"Loss between crank and wheels in % (default 15), used for the 0-60 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quarter-mile time and trap speed from vehicle weight and horsepower using the Hale formula, plus a power-limited lower bound for 0-60 mph.","exampleAgentPrompt":"My car weighs 3,200 pounds with me in it and makes 450 horsepower at the crank — what quarter-mile time and trap speed should I expect, and what's my power-limited 0-60 lower bound?","exampleUseCases":[{"title":"Drag strip ET prediction for a build","prompt":"I'm building a muscle car that will weigh about 3,600 lbs with driver and put down 520 wheel horsepower — estimate my quarter-mile elapsed time and trap speed before I head to the track."},{"title":"Stock car performance benchmarking","prompt":"A stock Honda Civic Type R weighs around 3,100 lbs with driver and has 315 crank horsepower — what quarter-mile time and trap speed does the Hale formula predict for it?"},{"title":"Power upgrade impact analysis","prompt":"My truck weighs 5,400 lbs with me in it and currently makes 400 crank hp, but I'm adding a supercharger to get to 600 hp — calculate the quarter-mile time and trap speed for both power levels so I can see how much the blower helps."}],"resultDescription":"Returns a JSON object containing the quarter-mile elapsed time in seconds, trap speed in mph, a power-limited lower bound for 0-60 mph, crank and wheel horsepower figures, pounds-per-horsepower ratio, power-to-weight in hp/ton, plus a disclaimer, summary, and optional degraded/source metadata fields.","failureModes":["Missing required weightLb or horsepower query parameters returns an error","Weight outside 500–20000 lb range or horsepower outside 10–5000 range may be rejected or return invalid results","Invalid powerAt value (not 'crank' or 'wheel') may cause misinterpretation","Payment failure (x402 protocol) returns 402 with payment details before results can be retrieved","Extreme or physically implausible combinations may produce disclaimer-flagged or degraded outputs"],"whenToPreferThis":"Choose this endpoint when you need a quick, formula-based estimate of quarter-mile ET, trap speed, and 0-60 lower bound from weight and horsepower alone, without requiring dyno data or simulation. It is ideal for pre-track planning, build comparisons, or educating users on power-to-weight relationships. Prefer it over simulation tools when speed and simplicity matter more than high-fidelity modeling of aero, traction, or gearing.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:14:28.250Z","isFirstParty":false,"canonicalSlug":"automotive-acceleration-performance-estimator-3511e43b"}