年齢計算機
年・月・日単位で正確な年齢を計算。次の誕生日までの日数と総日数も表示します。
🎂
请输入出生日期
基于公历计算，时区为本地时间
関連キーワード
How to Use Age Calculator
Our Age Calculator computes your exact age in years, months, and days based on your date of birth and a comparison date (defaulting to today). It also shows how many days remain until your next birthday and the total number of days you've been alive. This is useful for verifying ages for legal documents, calculating experience durations, or simply satisfying curiosity. The calculation accounts for leap years and the varying lengths of calendar months, ensuring precise results every time.
- 1
Enter your birth date
Use the date picker to select your date of birth.
- 2
Set comparison date
The comparison date defaults to today, but you can change it to calculate age at any point in time.
- 3
View results
Your exact age in years, months, and days is displayed along with days until your next birthday.
Frequently Asked Questions
Does it account for leap years?
Yes. The calculator correctly handles leap years (February 29) when computing exact ages and remaining days.
Can I calculate someone else's age?
Absolutely. Just enter any birth date and comparison date to calculate the age for any person or date range.
What is the total days count used for?
The total days lived is a fun statistic and can be useful for milestone calculations or actuarial estimations.