年齢計算機
正確な年齢、星座、次の誕生日までの日数を確認しましょう！
生年月日を選択してください
年齢計算ツールとは？
The Age Calculator computes your exact age in years, months, days, hours, and even minutes from your date of birth. Beyond simple age calculation, it provides fun statistics and milestones related to your time alive. Knowing your precise age is useful for official documents, insurance applications, retirement planning, and satisfying curiosity. This calculator handles leap years, varying month lengths, and timezone considerations for accurate results down to the day. Enter your birth date and optionally a target date to calculate your exact age or the time between any two dates. The tool also shows interesting facts like how many heartbeats, breaths, and meals you've had, and upcoming milestone birthdays.
- ✓ 年・月・日単位で正確な年齢を計算
- ✓ 任意の日付を基準とした年齢計算にも対応
- ✓ 干支・西洋星座・次の誕生日までの日数も表示
- ✓ Handles leap years and varying month lengths with precision
- ✓ Fun life statistics including heartbeats, breaths, and meals consumed
よくある質問
▶正確な年齢はどのように計算しますか？
生年月日と今日の日付を比較し、月ごとの日数の違いやうるう年を考慮して正確に計算します。
▶韓国式年齢とは何ですか？
韓国式年齢では、生まれた時点で1歳で、毎年1月1日に実際の誕生日に関係なく1歳加算されます。
▶星座はどのように決まりますか？
西洋の星座は生まれた月と日に基づき、干支は生まれた年に基づく12年周期で決まります。
▶How does the calculator handle leap years?
The calculator accounts for all leap years (every 4 years, except century years not divisible by 400) when computing exact days lived. February 29 birthdays are handled correctly with age advancing on March 1 in non-leap years.
▶Can I calculate age between two arbitrary dates?
Yes. While the default calculates from your birth date to today, you can set any target date to find the exact duration between any two dates — useful for project timelines, anniversary countdowns, or historical calculations.
▶How accurate are the life statistics?
Statistics like heartbeats (average 72 per minute) and breaths (average 15 per minute) are based on medical averages and are estimates. Actual numbers vary by individual health, activity level, and age.
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