Date & Time Calculators
Select a calculator below to perform fast, accurate calculations.
Time Conversion Table Generator
Generate multi-timezone comparison tables across 10 global zones.
Date & TimeSGT to NZST Calculator
Convert Singapore Time (SGT) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to SGT Calculator
Convert New Zealand Time (NZST/NZDT) to Singapore Time (SGT).
Date & TimeCST to NZST Calculator
Convert US Central Time (CST/CDT) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to CST Calculator
Convert New Zealand Time (NZST/NZDT) to US Central Time (CST/CDT).
Date & TimeJST to NZST Calculator
Convert Japan Standard Time (JST) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to JST Calculator
Convert New Zealand Time (NZST/NZDT) to Japan Standard Time (JST).
Date & TimeAEST to NZST Calculator
Convert Australian Eastern Time (AEST/AEDT) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to AEST Calculator
Convert New Zealand Time (NZST/NZDT) to Australian Eastern Time (AEST/AEDT).
Date & TimeGMT to NZST Calculator
Convert Greenwich Mean Time (GMT/UTC) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to GMT Calculator
Convert New Zealand Time (NZST/NZDT) to Greenwich Mean Time (GMT/UTC).
Date & TimePST to NZST Calculator
Convert US Pacific Time (PST/PDT) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to PST Calculator
Convert New Zealand Time (NZST/NZDT) to US Pacific Time (PST/PDT).
Date & TimeEST to NZST Calculator
Convert US Eastern Time (EST/EDT) to New Zealand Time (NZST/NZDT).
Date & TimeNZST to EST Calculator
Convert New Zealand Time (NZST/NZDT) to US Eastern Time (EST/EDT).
Date & TimeAEST to SGT Calculator
Convert Australian Eastern Time (AEST/AEDT) to Singapore Time (SGT).
Date & TimeSGT to AEST Calculator
Convert Singapore Time (SGT) to Australian Eastern Time (AEST/AEDT).
Date & TimeGMT to SGT Calculator
Convert Greenwich Mean Time (GMT/UTC) to Singapore Time (SGT).
Date & TimeSGT to GMT Calculator
Convert Singapore Time (SGT) to Greenwich Mean Time (GMT/UTC).
Date & TimePST to SGT Calculator
Convert US Pacific Time (PST/PDT) to Singapore Time (SGT).
Date & TimeSGT to PST Calculator
Convert Singapore Time (SGT) to US Pacific Time (PST/PDT).
Date & TimeEST to SGT Calculator
Convert US Eastern Time (EST/EDT) to Singapore Time (SGT).
Date & TimeSGT to EST Calculator
Convert Singapore Time (SGT) to US Eastern Time (EST/EDT).
Date & TimeCST to AEST Calculator
Convert US Central Time (CST/CDT) to Australian Eastern Time (AEST/AEDT).
Date & TimeAEST to CST Calculator
Convert Australian Eastern Time (AEST/AEDT) to US Central Time (CST/CDT).
Date & TimeJST to AEST Calculator
Convert Japan Standard Time (JST) to Australian Eastern Time (AEST/AEDT).
Date & TimeAEST to JST Calculator
Convert Australian Eastern Time (AEST/AEDT) to Japan Standard Time (JST).
Date & TimeGMT to JST Calculator
Convert Greenwich Mean Time (GMT/UTC) to Japan Standard Time (JST).
Date & TimeJST to GMT Calculator
Convert Japan Standard Time (JST) to Greenwich Mean Time (GMT/UTC).
Date & TimeGMT to AEST Calculator
Convert Greenwich Mean Time (GMT/UTC) to Australian Eastern Time (AEST/AEDT).
Date & TimeAEST to GMT Calculator
Convert Australian Eastern Time (AEST/AEDT) to Greenwich Mean Time (GMT/UTC).
Date & TimePST to AEST Calculator
Convert US Pacific Time (PST/PDT) to Australian Eastern Time (AEST/AEDT).
Date & TimeAEST to PST Calculator
Convert Australian Eastern Time (AEST/AEDT) to US Pacific Time (PST/PDT).
Date & TimeEST to AEST Calculator
Convert US Eastern Time (EST/EDT) to Australian Eastern Time (AEST/AEDT).
Date & TimeAEST to EST Calculator
Convert Australian Eastern Time (AEST/AEDT) to US Eastern Time (EST/EDT).
Date & TimePST to JST Calculator
Convert US Pacific Time (PST/PDT) to Japan Standard Time (JST).
Date & TimeJST to PST Calculator
Convert Japan Standard Time (JST) to US Pacific Time (PST/PDT).
Date & TimeEST to JST Calculator
Convert US Eastern Time (EST/EDT) to Japan Standard Time (JST).
Date & TimeJST to EST Calculator
Convert Japan Standard Time (JST) to US Eastern Time (EST/EDT).
Date & TimePST to CET Calculator
Convert US Pacific Time (PST/PDT) to Central European Time (CET/CEST).
Date & TimeCET to PST Calculator
Convert Central European Time (CET/CEST) to US Pacific Time (PST/PDT).
Date & TimeEST to CET Calculator
Convert US Eastern Time (EST/EDT) to Central European Time (CET/CEST).
Date & TimeCET to EST Calculator
Convert Central European Time (CET/CEST) to US Eastern Time (EST/EDT).
Date & TimeGMT to IST Calculator
Convert Greenwich Mean Time (GMT/BST) to Indian Standard Time (IST).
Date & TimeIST to GMT Calculator
Convert Indian Standard Time (IST) to Greenwich Mean Time (GMT/BST).
Date & TimeCST to IST Calculator
Convert US Central Time (CST/CDT) to Indian Standard Time (IST).
Date & TimeIST to CST Calculator
Convert Indian Standard Time (IST) to US Central Time (CST/CDT).
Date & TimePST to IST Calculator
Convert US Pacific Time (PST/PDT) to Indian Standard Time (IST).
Date & TimeIST to PST Calculator
Convert Indian Standard Time (IST) to US Pacific Time (PST/PDT).
Date & TimeEST to IST Calculator
Convert US Eastern Time (EST/EDT) to Indian Standard Time (IST).
Date & TimeIST to EST Calculator
Convert Indian Standard Time (IST) to US Eastern Time (EST/EDT).
Date & TimeCST to GMT Calculator
Convert US Central Time (CST/CDT) to Greenwich Mean Time (GMT/BST).
Date & TimeGMT to CST Calculator
Convert Greenwich Mean Time (GMT/BST) to US Central Time (CST/CDT).
Date & TimePST to GMT Calculator
Convert US Pacific Time (PST/PDT) to Greenwich Mean Time (GMT/BST).
Date & TimeGMT to PST Calculator
Convert Greenwich Mean Time (GMT/BST) to US Pacific Time (PST/PDT).
Date & TimeEST to GMT Calculator
Convert US Eastern Time (EST/EDT) to Greenwich Mean Time (GMT/BST).
Date & TimeGMT to EST Calculator
Convert Greenwich Mean Time (GMT/BST) to US Eastern Time (EST/EDT).
Date & TimeCST to PST Calculator
Convert US Central Time (CST/CDT) to US Pacific Time (PST/PDT).
Date & TimePST to CST Calculator
Convert US Pacific Time (PST/PDT) to US Central Time (CST/CDT).
Date & TimeEST to CST Calculator
Convert US Eastern Time (EST/EDT) to US Central Time (CST/CDT).
Date & TimeCST to EST Calculator
Convert US Central Time (CST/CDT) to US Eastern Time (EST/EDT).
Date & TimePST to EST Calculator
Convert US Pacific Time (PST/PDT) to US Eastern Time (EST/EDT).
Date & TimeEST to PST Calculator
Convert US Eastern Time (EST/EDT) to US Pacific Time (PST/PDT).
Date & TimeUTC Time Calculator
Convert local time to UTC, Zulu military time, and Unix epoch timestamps.
Date & TimeWorld Clock Calculator
Calculate and display synchronized local times across major global cities.
Date & TimeTime Zone Converter
Convert any local time into EST, PST, UTC, GMT, IST, and JST simultaneously.
Date & TimeTime Zone Calculator
Calculate local time difference and meeting times between global time zones.
Date & Time24-Hour Time Calculator
Add or subtract hours and minutes directly in 24-hour clock format with day rollovers.
Date & TimeMilitary Time Calculator
Convert between standard 12-hour AM/PM time and 4-digit military time format.
Date & TimeElapsed Time Calculator
Measure exact elapsed time between two timestamps in hours, minutes, and decimal hours.
Date & TimeTime Duration Calculator
Calculate exact time duration spanning multiple dates and times in days, hours, and minutes.
Date & TimeTime Card Calculator
7-day weekly employee timesheet calculator with meal breaks and 40h overtime pay.
Date & TimeHours Calculator
Calculate daily work shift hours, deduct lunch breaks, and estimate gross pay.
Date & TimeTime Difference Calculator
Calculate exact time difference between two times with midnight rollover support.
Date & TimeTime Calculator
Add or subtract hours, minutes, and seconds to calculate total time duration.
Date & TimeDay of the Week Calculator
Find the exact day of the week for any date in history or the future.
Date & TimeLeap Year Calculator
Check if any year is a leap year (366 days) or standard year (365 days).
Date & TimeExact Age Calculator
Calculate exact age down to seconds, minutes, hours, and total days.
Date & TimeChronological Age Calculator
Calculate exact age for clinical, psychological, and educational testing.
Date & TimeNext Birthday Calculator
Find upcoming birthday date, weekday, age turning, and milestone alerts.
Date & TimeHalf Birthday Calculator
Calculate exact half birthday date (6 months from DOB) and countdown.
Date & TimeBirthday Countdown Calculator
Count down days, weeks, hours, and sleeping nights until your next birthday.
Date & TimeBirthday Calculator
Calculate exact age, day of week born, next birthday countdown, and zodiac sign.
Date & TimeAge Difference Calculator
Calculate exact age gap between two people in years, months, days, and total days.
Date & TimeAdd Years to Date Calculator
Add N years to any start date to find the future date, weekday, and total days.
Date & TimeAdd Months to Date Calculator
Add N months to any start date with automatic month-end boundary handling.
Date & TimeAdd Weeks to Date Calculator
Add N weeks to any start date to find the target future date and day of week.
Date & TimeSubtract Days from Date Calculator
Subtract N calendar days from any start date to find the past date and day of week.
Date & TimeAdd Days to Date Calculator
Add N calendar days to any start date to find the future date and day of week.
Date & TimeDate Calculator
Add or subtract days, weeks, months, or years to/from any calendar date.
Date & TimeWorking Days Calculator
Calculate working days excluding weekends, public holidays, and shift hours.
Date & TimeBusiness Days Calculator
Calculate net business working days excluding weekends and public holidays.
Date & TimeYears Between Dates Calculator
Calculate full years, months, days, and exact decimal solar years between two dates.
Date & TimeMonths Between Dates Calculator
Calculate full months, remaining days, and decimal months between two dates.
Date & TimeWeeks Between Dates Calculator
Calculate full weeks, remaining days, and decimal weeks between two dates.
Date & TimeDays Between Dates Calculator
Calculate exact days between two dates, total weeks, hours, and minutes.
Date & TimeDate Difference Calculator
Calculate total days, weeks, months, years, and hours difference between two dates.
Date & TimeDate Duration Calculator
Calculate exact days, weeks, and months between two selected dates.
Date & TimeAge Calculator
Calculate exact age in years, months, days, hours, and total days lived.
Date & TimeWork Days Calculator
Compute working business days excluding weekends and public holidays.