# Date & Time Calculator(9 in 1) — Best tool to work with time > A versatile calculator for date, time, and time zone calculations. (iPhone/iPad app by Thomas Tsopanakis.) - Source: https://appshunter.io/ios/app/date-and-time-calculator9-in-1/id536930649 (this page in markdown: same URL + `.md`) - Developer: [Thomas Tsopanakis](https://appshunter.io/developer/471022214) - Category: Business, Utilities - Price: $0.99 - Rating: 4.70/5 from 1,911 App Store ratings · 404 written reviews indexed - Age rating: 4+ - Requires: iOS 10.0 · 3 MB - Languages: American English - Released: 2012-06-28 - Data updated: 2026-08-27 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/date-and-time-calculator9-in-1/id536930649/reviews.md ## What is Date & Time Calculator(9 in 1)? Date & Time Calculator (9 in 1) is the perfect tool to work with time. It is by far the best and most accurate date and time calculator available for iOS! • TIME DIFFERENCE The Time Difference Calculator works out the difference between two periods of time. How long have you been at work today? - So type in: "17:30 - 7:45 =" and you get: 09:45 (9 hours and 45 minutes). • WORK DAYS Calculate work days between two calendar days. Exclude weekends and find out how many week days are left. • ADD/SUBTRACT TIME You can add or subtract time expressions defined in years, months, days, hours, minutes AND seconds • MULTIPLY/DIVIDE TIME You can multiply/divide time expressions defined in years, months, days, hours, minutes AND seconds • TIME CONVERTER Use this time converter to convert instantly between seconds, minutes, hours, days and years. • DATE RANGER What date is 10 days from now, or 5 weeks from now? With Date Ranger you can quickly determine the new date given a start date, and a date range in days, weeks, months, or years to add or subtract. • TIME ZONES Provides time zone conversions taking into account local time zone and accepts present, past or future dates. • AGE CALCULATOR Age Calculator simply shows your age (years old, months and days). • TIME TRAVEL Time Travel calculates the time left on your trip given total distance remaining and current average speed. ## Key features - Time difference calculation - Workday calculation (excluding weekends) - Add/subtract time (years to seconds) - Multiply/divide time - Time unit conversion - Date ranging - Time zone conversion - Age calculation ## Chart rankings - #162 in Top Paid · Business (US App Store) ## Recent user reviews (10 of 404) All indexed reviews: https://appshunter.io/ios/app/date-and-time-calculator9-in-1/id536930649/reviews.md ### 5/5 — Useful *2024-07-16, version 3.0.2* I have had this app for awhile. It continues to be quite useful for a variety of time related tasks and it’s easy to use. ### 5/5 — Great App *2023-08-31, version 3.0.2* Multi functional, converts to military time, time in another country, and age other features I have yet to explore. The cities in countries could be improved but over all useful. ie United States instead of America ### 5/5 — Nice *2023-08-14, version 3.0.2* Awesome ### 5/5 — Bravo! *2023-05-09, version 3.0.2* A nice app that works well and fills a very useful niche. Keep up the good work! ### 5/5 — Time *2023-05-09, version 3.0.2* Great time saver( no pun intended) works great for my monthly reports. This is an awesome program for time calculating. ### 5/5 — Excellent *2023-05-08* Good app. Works perfect. Good luck ### 5/5 — Perfect Fish Quarantine App *2023-02-19, version 3.0.2* Perfect app for quarantining fish…. The tank transfer method requires times by the hour. This easily calculates the next time and even lets you add it to your calendar. ### 5/5 — Très pratique et utilisé régulièrement *2022-12-09* Voic un convertisseur très pratique que j’utilise régulièrement pour convertir des données de temps. Bravo! ### 5/5 — Truck Driver *2022-11-16, version 3.0.2* I use this app every day figuring out my hours for the day and for the week. Very easy to use. Great job! ### 5/5 — Well done! *2022-11-08, version 3.0.2* I am a big fan of time based apps and this one is right on. Thanks! ## Frequently asked questions about Date & Time Calculator(9 in 1) ### What does the Date & Time Calculator do? The Date & Time Calculator is a utility app designed to perform various calculations involving dates and times. It can compute the difference between two time periods, calculate the number of workdays between dates, add or subtract time intervals, convert between different time units, and determine future or past dates. ### What are the key features of this app? Key features include calculating time differences, determining workdays by excluding weekends, adding or subtracting time in various units (years to seconds), multiplying and dividing time expressions, converting between seconds, minutes, hours, days, and years, and a date ranger to find future or past dates. It also offers time zone conversions, an age calculator, and a time travel feature. ### Is this app free to use? Yes, the application is available for free. Based on the provided information, there are no associated costs for downloading or using its features, and it does not contain in-app purchases or advertisements. ### What kind of calculations can I perform with time? You can perform a wide range of time calculations. This includes finding the exact difference between two times, adding or subtracting durations defined in years, months, days, hours, minutes, and seconds, and multiplying or dividing time expressions. The app also converts time between different units like seconds, minutes, hours, days, and years. ### Can this app help with travel planning or time zone differences? Yes, the app includes a dedicated Time Zones feature that provides time zone conversions, taking into account local time and supporting present, past, or future dates. Additionally, the Time Travel feature can calculate remaining trip time based on distance and speed, which could be useful for travel planning. ## Version history (last 5 releases) ### 3.2 — 2026-05-27 Minor bugs fixed ### 3.1 — 2026-05-04 minor bugs fixed :) ### 3.0.2 — 2018-09-30 iOS 12 support is here!! Thanks for using Date & Time Calculator. You are awesome :) ### 3.0.1 — 2018-05-22 - iPhone X support - Ability to search time zones Thanks for using Date & Time Calculator. You are awesome :) ### 3.0 — 2018-02-19 - iPhone X support - Ability to search time zones Thanks for using Date & Time Calculator. You are awesome :) ## Apps similar to Date & Time Calculator(9 in 1) | App | Rating | Price | Category | | --- | --- | --- | --- | | [Work Hour Tracker・EmployeeLink](https://appshunter.io/ios/app/work-hour-trackeremployeelink/id1397280601) | 4.8 (1,794) | Free | Business | | [Hours Tracker: Time Tracking](https://appshunter.io/ios/app/hours-tracker-time-tracking/id336456412) | 4.8 (55,501) | Free | Business | | [Clock In & Out Hours Tracker](https://appshunter.io/ios/app/clock-in-and-out-hours-tracker/id1442066318) | 4.5 (1,314) | Free | Business | | [iTimePunch Plus Time Sheet App](https://appshunter.io/ios/app/itimepunch-plus-time-sheet-app/id1012241357) | 4.6 (336) | Free | Business | | [Clocket: Time Clock Work Hours](https://appshunter.io/ios/app/clocket-time-clock-work-hours/id534278133) | 4.6 (6,505) | Free | Business | | [Hours Keeper: Time Tracker](https://appshunter.io/ios/app/hours-keeper-time-tracker/id563155321) | 4.1 (1,405) | Free | Business | ## More apps by Thomas Tsopanakis - [Recipes for Filters & Presets](https://appshunter.io/ios/app/recipes-for-filters-and-presets/id474003191) - [Countdown to Big Events](https://appshunter.io/ios/app/countdown-to-big-events/id482358013) - [Percentages Calculator](https://appshunter.io/ios/app/percentages-calculator/id528727630) - [InSquarer - No Crop for Instagram](https://appshunter.io/ios/app/insquarer-no-crop-for-instagram/id531705691) - [Sticky Notes HD](https://appshunter.io/ios/app/sticky-notes-hd/id543932220) All apps by Thomas Tsopanakis: https://appshunter.io/developer/471022214 ## Related topics [adding time](https://appshunter.io/ios/topics/adding-time) · [time calculator driving](https://appshunter.io/ios/topics/time-calculator-driving) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*