Time & Date Calculators Calculators
Four free tools for everyday date and time math — from calculating exact age to converting across world time zones.
Date and time calculations look simple until leap years, month lengths, and time zone offsets get involved. These four tools handle the edge cases automatically so you get a reliable answer every time.
🕐 All Time & Date Calculators
🧭 Which Time & Date Calculator Should You Use?
Finding your exact age
The Age Calculator breaks your age down into years, months, days, and even days until your next birthday.
Scheduling across countries
The Time Zone Converter handles all 24 world time zones, including daylight saving time.
Counting days between two dates
The Date Calculator finds the exact number of days, weeks, or business days between any two dates.
Working out a weighted grade
The Grade Calculator factors in different assignment weights to show your current or target grade.
❓ Frequently Asked Questions
❓ Does the Time Zone Converter account for daylight saving?
Yes — it adjusts for DST automatically for regions that observe it.
❓ Can the Date Calculator count only business days?
Yes, it has a dedicated business-day mode that excludes weekends.