Time & Date Calculators & Converters
Save to PinterestSix tools for the time and date calculations people reach for every day: converting between time zones, finding the number of days between two dates, calculating an exact age, counting business days, converting decimal hours to hours and minutes, and translating Unix timestamps to human-readable dates. All tools run entirely in your browser using the built-in Intl API and standard date arithmetic — no server calls, no sign-up, and no external libraries. Time zone data comes from the IANA Time Zone Database, which tracks every historical and current daylight saving time rule worldwide.
All Time & Date Tools
Time Zone Converter — Convert Time Between Time Zones
Convert time between any two IANA time zones instantly. Works in your browser — no sign-up needed.
Date Difference Calculator — Days, Weeks, and Months Between Dates
Calculate the exact number of days, weeks, and months between any two dates. Works instantly in your browser.
Age Calculator — Exact Age in Years, Months, and Days
Calculate your exact age in years, months, and days from any birth date. Works in your browser with no sign-up.
Business Days Calculator — Add or Subtract Working Days
Add or subtract business days from any date. Counts Monday–Friday only. Fast, browser-based, no sign-up.
Decimal Hours Converter — Hours and Minutes to Decimal
Convert decimal hours to hours and minutes or vice versa. Instantly convert 7.5 hours to 7h 30m and back.
Unix Timestamp Converter — Epoch to Human-Readable Date
Convert Unix timestamps to readable dates or any date to a Unix epoch timestamp. Works in your browser instantly.