Time Duration/Add Calculator vs Anywhen

It is an application that can easily calculate the elapsed time from the time and the time from the elapsed time. You can also display the time between the start date and time and the end date and time in terms of hours, minutes, seconds, etc. ・Calculate from start time and end time Enter the start time and end time to calculate the elapsed time. Elapsed time can be checked in terms of hours, minutes, and seconds, and the current time can be easily entered. ・Calculated from start time + elapsed time Calculate the end time with the start time and elapsed time. You can also ask for the time before the elapsed time. ・Calculate from the start date and time and the end date and time Enter a start date and time and an end date and time to calculate the elapsed time. Elapsed time can also be checked in terms of hours, minutes, and seconds. ・Calculated from start date and time + elapsed time Enter the start date and time and elapsed time to calculate the end date and time. ・Time conversion The entered time is displayed in day/hour/minute/second, converted to days, converted to hours, converted to minutes, or converted to seconds. You can also convert 1000 seconds into minutes and seconds, or convert hours into days.

Anywhen is the all-in-one time calculator — every calculation that revolves around time, done properly, on a phone that never needs a connection. WHAT IT DOES • Duration between two dates or times — with daylight-saving handled correctly, not approximated • Add or subtract time — days, weeks, months, years, or exact hours and minutes • Age calculator — exact age, next birthday, age on a given date • Business days — count or add working days, with custom workweeks and holiday calendars • Time-zone converter — one moment, many zones, historically accurate • World clock — your favourite cities at a glance • Meeting planner — find a slot that works across up to 8 people and their working hours • Timers and stopwatch — timers survive a restart or reboot • Countdowns and streaks — days until, days since • Calendar info — ISO week, day of year, quarter, leap years • Duration arithmetic — add up hours and minutes like an adding machine • Unit converter — every time unit at once • Timestamp tools — Unix epoch, ISO 8601, RFC 3339, RFC 2822, HTTP date • Recurrence calculator — work out repeating schedules • Sunrise and sunset — for any city, fully offline HOME-SCREEN WIDGETS Six widgets that actually earn their place: a world-clock strip, an event countdown, a days-since counter, a two-zone comparison, today's calendar facts, and your next timer. CORRECTNESS IS THE POINT Most time calculators quietly get the hard cases wrong. Anywhen is built on the IANA time-zone database, uses exact integer arithmetic with no floating-point date math, and is tested against thousands of property-based cases covering daylight-saving transitions, leap years, and the awkward zones with 30- and 45-minute offsets. When a result depends on a convention — what "one month later" means from January 31st, or which instant to use when a clock jumps — Anywhen tells you which rule it applied instead of hiding it. PRIVATE BY DESIGN No account. No sign-up. No ads. Every calculation works with no connection — your dates, timers and events stay on your device and are never uploaded. Anywhen does record anonymous statistics about which tools get used, so we know what to improve next; that never includes what you type, and you can switch it off in Settings. We never sell or share your data. ACCESSIBLE Full dark and light themes, dynamic type support, and right-to-left layout.