Time Calculator
Calculate time differences, add or subtract time, convert between time zones, and find the number of days between 2 dates with our easy-to-use time calculators
Frequently Asked Questions
How do I calculate the exact duration between two dates?
To calculate the duration between two dates: 1. Enter the start date and time 2. Enter the end date and time 3. The calculator will show the precise duration in years, months, days, hours, minutes, and seconds For example, from January 15, 2023 to March 20, 2023 is 2 months and 5 days, or approximately 64 days. This is useful for calculating age, employment duration, project timelines, or any other time-based measurements.
How are leap years handled in duration calculations?
Our duration calculator automatically accounts for leap years when calculating the time between dates. Leap years (which have 366 days instead of 365) occur every 4 years, with some exceptions for century years. The calculator correctly handles these variations when determining the exact number of days between dates. For example, the duration from February 28, 2020 to March 1, 2020 is 2 days (because 2020 was a leap year), while the same dates in 2021 would yield a duration of 1 day.
How do I calculate business days between two dates?
While our standard duration calculator shows the total number of calendar days between dates, you can interpret the results to find business days: 1. Calculate the total duration between your dates 2. Note the number of complete weeks (each representing 5 business days) 3. Add any remaining business days for partial weeks For more precise business day calculations that account for holidays and regional work schedules, consider using a specialized business day calculator.
What is UTC and why is it important for time calculations?
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time. It's crucial for: 1. International time coordination - UTC provides a consistent reference point for all time zones 2. Avoiding daylight saving time confusion - UTC doesn't change with seasons 3. Scientific and technical applications that require precise time synchronization All time zones are defined as offsets from UTC (e.g., Eastern Standard Time is UTC-5, meaning 5 hours behind UTC). Our calculators use UTC behind the scenes to ensure accurate time conversions and calculations regardless of daylight saving time or other regional time variations.