Best Julian Date Converter Apps

205+ iOS apps curated and reviewed

4.7 avg rating
15 free apps
Updated June 2026

With an average user rating of 4.7★, the julian date converter category is one of the App Store's strongest. Browse all 205+ apps we track, sorted so the most loved ones surface first.

Top Picks for Julian Date Converter

Julian - Quick Dates#1

Julian - Quick Dates by Juan Carlos Perez

Julian dates at a glance
Editor's Choice
🔧 Utilities
4.8😊(4K ratings)
FreeIn-App Purchases
Julian - Quick Dates screenshot 1
Julian - Quick Dates screenshot 2
Julian - Quick Dates screenshot 3
Julian - Quick Dates screenshot 4

This app provides a quick and efficient way to view and convert between 11 different types of dates, including standard Julian dates, Mars Sol dates, and Unix time. It features a calendar for easy navigation and allows copying dates to the clipboard. The current date can be displayed on the app icon and Apple Watch complications.

What We Love

  • 🚀 Excellent for work/professional use
  • 👍 Simple and easy to use
  • 👍 Helpful for daily tasks
  • 👍 Convenient complication on Apple Watch

Room to Improve

  • 🐛 Complication issues on Apple Watch (not updating, getting stuck)
  • 🐛 Date discrepancies between app and complication
  • 🐛 App not functioning properly after updates
Julian Date#2

Julian Date by Jevon Charles

Strong Contender
📊 Productivity
4.8😊(2.7K ratings)
FreeIn-App Purchases
Julian Date screenshot 1
Julian Date screenshot 2
Julian Date screenshot 3

Convert between standard calendar dates and Julian dates. Supports 5-digit and full Julian date formats, including time. Also allows conversion from Julian dates back to calendar dates.

What We Love

  • 🚀 Best Julian Date App
  • 👍 Great
  • 👍 Love this APP
  • 👍 Military

Room to Improve

  • 🤔 Could be improved
  • 🤔 Good but...
  • 🤔 Good app
Unit Converter - Best Unit App#3

Unit Converter - Best Unit App by Alan Mrvica

Convert All Units and Currency
Worth Considering
✈️ Travel
4.8😊(172K ratings)
FreeAdsIn-App Purchases
Unit Converter - Best Unit App screenshot 1
Unit Converter - Best Unit App screenshot 2
Unit Converter - Best Unit App screenshot 3
Unit Converter - Best Unit App screenshot 4
Unit Converter - Best Unit App screenshot 5
Unit Converter - Best Unit App screenshot 6

Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.

What We Love

  • 🚀 Easy to use
  • 👍 Comprehensive conversions
  • 💡 Useful for travel and cooking
  • 🚀 Quick and efficient

Room to Improve

  • 🐛 Limited character input
  • 🐛 Difficulty with negative numbers
  • 💡 Lack of ability to quickly switch between conversions

More Julian Date Converter apps to explore

4
JulianCal
JulianCal
JulianCal
Julian Day & Batch Codes
Free
🔧 Utilities
(0)
5
Julianator
Julianator
Julianator
Julian Day of Year Calculator
$0.99
$1.99 | 50% OFF

Easily convert dates between the Gregorian calendar and the Julian Day of Year (ordinal date). This tool is useful for systems that use day-of-year numbering, such as mainframes, military, and food industries. It offers a clean interface, monthly views, and widgets for quick access.

Gregorian to Julian Day of Year conversionJulian Day of Year to Gregorian conversionMonthly calendar view
🔧 Utilities
(105)
free
6
Julian Calendar
Julian Calendar
Julian Calendar
Date Converter, Day Calculator
$1.99

View various Julian Calendar dates, including short, long, and reduced Julian Dates. Supports Lock Screen and Home Screen widgets for easy access to date conversions and calculations.

View Short Julian Calendar DateView Long Julian Calendar DateView Julian Date
📚 Education
(47)
paid
7
Date Converter (تبدیل تاریخ)
Date Converter (تبدیل تاریخ)
Date Converter (تبدیل تاریخ)
Gregorian, Shamsi, Qamari
Free
🔧 Utilities
(2)
8
365 Days Calendar
365 Days Calendar
365 Days Calendar
Julian & day tracker
$1.99

This utility app converts between Julian and Gregorian dates and tracks Julian Day Numbers. It's designed for users in fields like astronomy, military operations, and historical research who need precise date management for daily operations.

Julian to Gregorian date conversionGregorian to Julian date conversionJulian Day Number tracking
🔧 Utilities
(23)
paid
9
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Unit Converter: Mila's Tools
Metric Conversion Calculator +
Free

This app offers a comprehensive unit conversion tool with over 300 units across 27 categories. It supports compound units, date calculations, and conversions between various number systems, including historical units. The interface is designed for ease of use with smart keyboards and customizable display options.

27 conversion categories300+ unitsCompound unit support
🔧 Utilities
(1.4K)
free with in-app purchases
10
Julian Clock
Julian Clock
Julian Clock
by Adam Allard
$0.99

This utility app displays the current Julian Date, time with seconds, military date format, day of the week, and Zulu time (GMT). It's designed for quick access to essential timekeeping information.

Julian Date displayReal-time clock with secondsMilitary date format
🔧 Utilities
(15)
paid
11
Hijri Cal التقويم الهجري
Hijri Cal التقويم الهجري
Hijri Cal التقويم الهجري
Hijri Converter, Simplified!
Free

Easily convert between Gregorian and Hijri dates with this utility app. It offers a widget for quick conversions, time travel calculations between dates, and support for Islamic events. Users can also adjust the Hijri date and receive daily reminders.

Gregorian to Hijri converterHijri to Gregorian converterFunctional widget for on-the-go conversion
📊 Productivity
(798)
free with in-app purchases
12
Klok - Time Zone Converter
Klok - Time Zone Converter
Klok - Time Zone Converter
by Buuuk Private Limited
Free

Easily convert and track time across multiple time zones with a convenient widget. Access it from anywhere, even when your phone is locked, to quickly see and adjust to different time zones.

Time zone converter widgetSwipe down accessAdd frequently used time zones
📊 Productivity
(3K)
free
13
Date Converter: Calendars
Date Converter: Calendars
Date Converter: Calendars
Convert dates across calendars
Free

Easily convert dates between various calendar systems like Gregorian, Islamic, Coptic, and Hebrew. Features authentic month names and a modern, customizable interface for researchers, historians, and religious observers.

Convert between Gregorian, Islamic, Coptic, Um Al Qura, Hebrew, and Solar Hijri calendarsAuthentic month names for each calendar systemIntuitive, modern Material Design 3 interface
🔧 Utilities
(65)
free with in-app purchases
14
Metric Conversion tool
Metric Conversion tool
Metric Conversion tool
Unit and currency converter
Free

This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.

Offline functionalityOver 30,000 unit conversions160+ currencies with live rates
🔍 Reference
(15K)
free
15
Conversion Calculator Plus
Conversion Calculator Plus
Conversion Calculator Plus
Unit Converter
Free

This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.

Unit and currency conversionSupports 160+ currencies (real & crypto)Automatic currency exchange rate updates
📊 Productivity
(15K)
free with in-app purchases
16
Ethiopian Calendar & Converter
Ethiopian Calendar & Converter
Ethiopian Calendar & Converter
Holiday Fasting Remind Widgets
Free

This app provides a comprehensive Ethiopian calendar, including Orthodox holidays, fasting days, and national events. It features a date converter, time zone adjustments, and reminders for birthdays and significant dates. Additional utilities like a calculator, notes, and world clock enhance its functionality.

Ethiopian Orthodox holidays and fasting daysDate and time converter (Ethiopian to local/vice versa)Birthday and event reminders
📊 Productivity
(3.8K)
free
17
Time Calculator - Work Hours
Time Calculator - Work Hours
Time Calculator - Work Hours
Date, Calendar & Salary Clock
Free

An app designed to streamline work hours calculations, helping users track their time with precision. Simplify your scheduling and stay organized effortlessly with Time Calculator⁺.

🔧 Utilities
(2.7K)
18
Mila's Unit Converter PRO
Mila's Unit Converter PRO
Mila's Unit Converter PRO
Ultimate conversion calculator
$9.99
$29.99 | 67% OFF

Effortlessly convert between hundreds of units across 26 essential categories with this precision calculator. Designed for speed and simplicity, it offers accurate results in seconds for students, professionals, and travelers alike. Enjoy offline functionality and a customizable experience.

Hundreds of units across 26 categoriesMetric, imperial, and specialized unitsSmart conversions for temperature, fuel, and more
🔧 Utilities
(842)
paid
19
Conversion Calculator !
Conversion Calculator !
Conversion Calculator !
Currency, Temperature, Length
Free

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

Real-time currency conversionsExtensive unit categories (weight, temp, length, volume, etc.)Simple and intuitive interface
✈️ Travel
(13K)
free with in-app purchases
20
Convert Date
Convert Date
Convert Date
by Fahad Alrashidi
Free

Easily convert dates between various calendar systems including Islamic, Gregorian, Hebrew, and more. Calculate age and access a history of your conversions. Share results as images.

Multiple calendar conversionsAge calculationConversion history
🔧 Utilities
(12)
free with in-app purchases