Calculate days between dates, add or subtract days, or count business days accurately with LiteCalc’s Date Calculator. Whether you’re scheduling events, managing deadlines, or planning projects, this tool makes time tracking simple and precise.
Between the selected dates
Pick your start and end dates using the intuitive calendar tool. You can calculate durations for personal milestones, project timelines, or event countdowns.
Select whether to find the days between two dates or to add or subtract a set number of days. This helps forecast future dates or review time between key events.
Your results appear instantly, showing total calendar days or business days. Adjust your inputs anytime for real-time updates or scenario planning.
Add/subtract time from dates.
Find deadlines and project due dates.
Add days, weeks, or months.
Add or subtract hours and minutes.
Compare times worldwide.
Measure elapsed time between two dates.
LiteCalc’s date and time tools simplify time tracking for any purpose. Whether you’re managing deadlines, event planning, or calculating durations, our calculators give you quick, accurate results that factor in every detail.
They support both U.S. and international date formats, ensuring compatibility for users worldwide. The system also accounts for leap years automatically, guaranteeing precise outcomes across all date ranges.
Use this calculator to determine project durations, payment cycles, delivery estimates, or academic term lengths. It’s trusted by professionals, educators, and planners for its speed, clarity, and reliability.
Our modern calendar—known as the Gregorian calendar—is the international standard for tracking days and years. Introduced in 1582 by Pope Gregory XIII, it replaced the Julian calendar to better align with the solar year, minimizing seasonal drift.
A standard Gregorian year has 365 days, while leap years add an extra day in February to keep the calendar in sync with Earth’s orbit. This correction ensures that annual events like equinoxes and holidays occur at consistent times each year.
Most of the world now uses the Gregorian calendar for civil, business, and scientific purposes. It’s the foundation for LiteCalc’s date calculations, ensuring your results reflect today’s universally accepted timekeeping system.
In the United States, federal holidays influence how business days are calculated. Days like New Year’s Day, Independence Day, and Thanksgiving are recognized nationwide, often excluded from work schedules and official business calendars.
Our business-day calculator feature helps you plan around weekends and public holidays automatically. This is ideal for payroll, project deadlines, and delivery planning where workdays—not total days—matter most.
Federal holidays in the U.S. typically include New Year’s Day (January 1), Memorial Day (last Monday in May), Independence Day (July 4), Labor Day (first Monday in September), Thanksgiving (fourth Thursday in November), and Christmas (December 25). Using LiteCalc, you can account for these automatically or adjust custom holidays as needed.
The LiteCalc Date Calculator quickly finds the number of days between two dates or lets you add or subtract days from a specific date. It automatically adjusts for leap years and supports both calendar and business-day calculations.
Yes. Check the “Calculate business days only” box to exclude weekends. This feature is ideal for project schedules, payroll planning, or estimating delivery dates that skip non-working days.
Absolutely. The LiteCalc Date Calculator follows the Gregorian calendar system, automatically adjusting for leap years so your results are always accurate—even across multiple years.
LiteCalc uses the modern Gregorian calendar, which is the global standard for date and timekeeping. It was introduced in 1582 and includes leap years to keep seasons and calendar dates properly aligned.
Yes. Enter your start date, then choose to add or subtract any number of days. The calculator will instantly display the resulting date, perfect for setting deadlines or calculating future events.
Calendar days count every day, including weekends and holidays. Business days include only weekdays (Monday through Friday), excluding weekends and, optionally, U.S. public holidays.
Yes. The calculator provides total days between two dates, which you can easily convert to weeks or months. For detailed breakdowns, use the LiteCalc Time Duration Calculator for full year, month, and week conversions.
The business-day mode automatically skips weekends and allows manual adjustment for U.S. federal holidays like Thanksgiving, Christmas, and Independence Day, ensuring accurate workday counts.
The Gregorian calendar is the most accurate and widely accepted global system, correcting the drift found in older calendars like the Julian calendar. It ensures precise date alignment with the solar year for modern civil use.
Yes. All LiteCalc tools, including the Date Calculator, Business Day Calculator, and Time Duration Calculator, are free to use online. No registration or download is required.