Skip to content
GET /v1/ratio

Single-pair gear ratio

Try it live

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

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

It works. Grab an API key and use it in your project.

Get an API key

Code snippets

curl "https://api.oanor.com/gearratio-api/v1/ratio" \
  -H "x-oanor-key: oanor_test_..."
await fetch("https://api.oanor.com/gearratio-api/v1/ratio", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
$ch = curl_init("https://api.oanor.com/gearratio-api/v1/ratio");
curl_setopt($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/gearratio-api/v1/ratio",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

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

{
    "data": {
        "note": "ratio = driven/driver. Output speed = input/ratio; output torque = input·ratio·efficiency.",
        "type": "reduction (torque up, speed down)",
        "inputs": {
            "driven_teeth": 60,
            "driver_teeth": 20
        },
        "gear_ratio": 3,
        "output_torque": 30,
        "output_speed_rpm": 500
    },
    "meta": {
        "timestamp": "2026-06-04T18:38:22.477Z",
        "request_id": "0cdb3c8b-2dd4-4253-abe2-d84f91e14b4d"
    },
    "status": "ok",
    "message": "Gear ratio",
    "success": true
}