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GET /v1/horsepower

Estimate horsepower from a trap speed

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10 free calls per day — no sign-up, no API key. Goes through the oanor gateway.

Custom headers (optional)
api.oanor.com/quartermile-api

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Code snippets

curl "https://api.oanor.com/quartermile-api/v1/horsepower" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/quartermile-api/v1/horsepower", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/quartermile-api/v1/horsepower");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);
import requests
requests.get(
    "https://api.oanor.com/quartermile-api/v1/horsepower",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "note": "Trap speed reflects power far better than ET does, because it is set by power-to-weight and barely by the launch — so hp ≈ weight × (trap ÷ 234)³ is a popular way to estimate flywheel power from a timeslip. It is an estimate: aero, altitude and the exact weight all shift it, but two runs at very different traps with the same weight really do differ in power.",
        "inputs": {
            "weight_lb": 3000,
            "trap_speed_mph": 108.6
        },
        "estimated_horsepower_hp": 300
    },
    "meta": {
        "timestamp": "2026-06-06T23:53:55.177Z",
        "request_id": "491aedb9-422c-4f40-820c-5108f4e58361"
    },
    "status": "ok",
    "message": "Horsepower estimate",
    "success": true
}