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GET /v1/navy

US Navy body fat

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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/bodyfat-api

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Code snippets

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

Example response

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

{
    "data": {
        "note": "US Navy circumference method. Measure neck below the larynx, waist at the navel (men) / narrowest point (women), and hips at the widest point (women). A man at height 178, neck 40, waist 90 cm reads ≈18.7 %.",
        "inputs": {
            "sex": "male",
            "neck_cm": 40,
            "waist_cm": 90,
            "height_cm": 178
        },
        "method": "US Navy circumference",
        "category": "acceptable",
        "body_fat_percent": 18.7
    },
    "meta": {
        "timestamp": "2026-06-05T19:50:24.775Z",
        "request_id": "c66147c3-38bb-4c82-9d1c-5971b3b725cb"
    },
    "status": "ok",
    "message": "Navy body fat",
    "success": true
}