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Accurately calculate the number of business days by automatically excluding weekends and custom holidays.
Lunar and Solar Calendar Converter
A tool for converting dates between the lunar and solar calendars. It supports lunar leap months and is ideal for looking up holidays, birthdays, or historical dates.
Expiration Date Calculator
Calculate the expiration date based on the production date and shelf life, or check the near-expiry and expired status based on the expiration date.
Bazi to Gregorian Calendar Converter
A two-way Bazi and Gregorian calendar converter with Late Rat Hour (Zi Shi) rule options, designed for Chinese astrology and calendar calculations.
Baby 100 Days Calculator
Calculate the exact Gregorian and Lunar dates, along with the day of the week, for your baby's 1-month, 100-day, and 1-year milestones based on their birth date.
Lunar and Solar Calendar Converter
A tool for converting dates between the lunar and solar calendars. It supports lunar leap months and is ideal for looking up holidays, birthdays, or historical dates.
Expiration Date Calculator
Calculate the expiration date based on the production date and shelf life, or check the near-expiry and expired status based on the expiration date.
Bazi to Gregorian Calendar Converter
A two-way Bazi and Gregorian calendar converter with Late Rat Hour (Zi Shi) rule options, designed for Chinese astrology and calendar calculations.
Baby 100 Days Calculator
Calculate the exact Gregorian and Lunar dates, along with the day of the week, for your baby's 1-month, 100-day, and 1-year milestones based on their birth date.
Age Calculator
Enter your birth date to instantly calculate your exact age, traditional Chinese age, and total days alive, plus find your Chinese zodiac, horoscope, and lunar birthday.
Still counting working days manually? This tool automatically calculates the number of business days between two dates, accurately excluding weekends and custom holidays to output an exact working day count. It is ideal for project scheduling, payroll tracking, and attendance management.
Date inputs must follow the YYYY-MM-DD format. A maximum of 30 custom holiday dates is supported. Results are for reference only and are not legally or contractually binding. All calculations are performed locally in your browser, ensuring no data upload risks.
For cross-timezone projects, we recommend using UTC dates to avoid time difference errors. Common use cases include calculating project durations (e.g., 2023-09-01 to 2023-09-30, excluding the Mid-Autumn Festival, results in 21 business days) and tracking monthly attendance. Holiday data should be updated regularly to ensure accuracy.
