妊娠体重増加計算器
妊娠前のBMIに基づく 妊娠１週間の推奨体重増加範囲
結果はタイプすると更新されます。
この計算機の情報
A pregnancy weight-gain calculator shows the healthy amount to gain by any week of pregnancy, using the Institute of Medicine (IOM) guidelines that scale the target to your pre-pregnancy body mass index. Underweight women are advised to gain the most and obese women the least. First-trimester gain is small (about 0.5–2 kg); the bulk accrues in the second and third trimesters at a steady weekly rate, tracked here in a week-by-week schedule.
It first works out your pre-pregnancy BMI. A 165 cm, 60 kg woman has a BMI of 60 ÷ 1.65² ≈ 22, which is normal weight, so her full-term target is 11.5–16 kg. By week 20 the recommended gain is the small first-trimester amount plus about 0.35–0.5 kg per week for the seven weeks since week 13 — roughly 3–5.5 kg so far. The schedule lists the target for every fortnight of pregnancy.
Enter your height, pre-pregnancy weight and current week, and note whether you are carrying twins, which raises the recommended range substantially. Because these are population guidelines, individual advice may differ — your midwife or obstetrician accounts for your health, starting weight and how the pregnancy is progressing. This tool is for information, not medical advice.
よくある質問
妊娠中にどれだけ体重を増やすべきですか。
The IOM guidelines depend on pre-pregnancy BMI: about 12.5–18 kg (28–40 lb) if underweight, 11.5–16 kg (25–35 lb) if normal weight, 7–11.5 kg (15–25 lb) if overweight, and 5–9 kg (11–20 lb) if obese, for a single baby.
週間目標はどうやって決められますか。
First-trimester gain is small — roughly 0.5–2 kg total. After week 13 a steady weekly rate applies (about 0.45 kg/week for normal weight, less if overweight), so the cumulative target at any week is the first-trimester gain plus the rate times the weeks since 13.
双子の指導は異なるのか？
Yes. Carrying twins raises the recommended total substantially — roughly 17–25 kg (37–54 lb) for a normal-weight mother — because there are two babies plus extra placenta and fluid. This tool shows the higher twin range when selected.
２０週目までに 体重はどれくらい増えたらいいの？
For a normal-weight woman the IOM target by week 20 is roughly 3–5.5 kg (about 7–12 lb): the small first-trimester gain plus about 0.35–0.5 kg per week after week 13. The pregnancy weight gain calculator tailors this to your pre-pregnancy BMI.
妊娠初期に体重が減少するのは正常なことですか。
Some women lose a little early on from nausea, which is often fine. The IOM plan expects only a small first-trimester gain of about 0.5–2 kg, with most weight added later; discuss significant loss with your provider.
妊娠中に肥満になったら？
推奨総重量は正常体重の11.5～16kgに対して、過重の場合は7～11.5kg、肥満の場合は5～9kgと低い。
API — コードからこの計算機を使う
この計算機を自由な JSON エンドポイントとして呼び出します。鍵は必要ありません。下のフィールド値をクエリパラメータまたは JSON として送信してください。 省略したものは、このページに既に入力されているデフォルトと同じ値を使用します。未知のパラメータは 400 で、サイレンスゼロはありません。 API ドキュメントを読む →
エンドポイント
GET https://calculator.free/api/v1/pregnancy-weight-gain/curl
curl "https://calculator.free/api/v1/pregnancy-weight-gain/?units=metric&height=165&weight=60&week=20"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/pregnancy-weight-gain/?" + new URLSearchParams({
"units": "metric",
"height": "165",
"weight": "60",
"week": "20"
}));
const data = await r.json();
console.log(data.results);結果は一般的な指導のための推定であり，財務的，医療的または税務的な助言ではない。