電卓 日付と時刻

Date & Time Calculator is the complete and reliable app for date, time, and number calculations, ideal for work, study, and everyday life. It combines a standard calculator, time management, and advanced tools into one simple, fast, and intuitive app.

Easily perform calculations between dates and times, find the difference between two dates, calculate age, convert time units, and keep track of time wherever you are.

You can also add an elegant analog clock widget to your home screen (second hand available on Android 12+). The app supports both 12-hour (AM/PM) and 24-hour formats.

Main Features

🔲 CALCULATOR

Fast and reliable standard calculator for all everyday calculations.

🕔 TIME CALCULATOR

Add, subtract, multiply, and divide time values easily and accurately.

🗓 DATE & TIME DIFFERENCE

Quickly calculate the duration between two dates or times and instantly find age from a birth date.

➕ ADD OR SUBTRACT

Add or subtract days, hours, minutes, and seconds from any date or time.

🔄 CONVERTER

Convert between years, months, weeks, days, hours, minutes, seconds, and milliseconds with one tap.

🌐 WORLD CLOCK

View the exact time in any time zone around the world, always up to date.

⏱️ STOPWATCH

Time activities, sports, and events with precision.

Download Date & Time Calculator now and simplify time management with one powerful, fast, and easy-to-use app.