Ramadan Day Calculator — Free Online Hijri Date Tool

How to Use the Ramadan Day Calculator

1. Enter the year: Type the Gregorian year you want to check in the Year field. The calculator defaults to the current year, but you can explore any year from 1900 to 2100. This is useful for planning future Ramadans or looking up historical dates to understand when Ramadan fell in past years.
2. Select the month: Choose the Gregorian month from the dropdown menu. Since Ramadan shifts by about 10 to 12 days each year relative to the Gregorian calendar, you may need to try different months to find when Ramadan occurs in a given year. The calculator instantly updates results as you change the month.
3. Enter the day: Type the specific day of the month you want to check. The calculator accepts days from 1 to 31. If you enter an invalid day for a particular month (like February 31), the conversion algorithm will still produce a result but it may not correspond to a real date, so enter valid dates for accurate results.
4. Read the results: The results panel on the right displays the full Hijri date, whether the selected date falls during Ramadan, and if so, which day of Ramadan it is along with a fasting progress bar. If the date is not during Ramadan, it shows how many days remain until the next Ramadan begins. An estimated Eid al-Fitr date is provided when the date falls within Ramadan.

All results update in real time as you change any input value. The Hijri date conversion is astronomical and may differ by one to two days from dates based on local crescent moon sighting. Always confirm important dates with your local Islamic authority or mosque.

Ramadan Date Conversion Formula

Variables Explained

• Y: The Gregorian year. If the month is January or February, the algorithm subtracts 1 from the year for calculation purposes, following the Julian Day Number convention.
• M: The Gregorian month number (1 for January through 12 for December). January and February are treated as months 13 and 14 of the preceding year in the JD formula.
• D: The day of the Gregorian month, a simple integer from 1 to 31.
• B: A correction factor for the Gregorian calendar reform, calculated as B = 2 - A + floor(A/4) where A = floor(Y/100). This accounts for the leap year differences between Julian and Gregorian calendars.
• JD: The Julian Day Number, a continuous count of days since January 1, 4713 BC. It serves as the universal intermediary for converting between any two calendar systems.
• Ramadan: The 9th month of the Hijri calendar. If the converted Hijri month equals 9, the date falls within Ramadan, and the Hijri day gives the specific Ramadan day number.

Step-by-Step Example

Convert March 1, 2026 to the Hijri calendar to check if it falls during Ramadan:

1. Calculate the Julian Day Number for March 1, 2026 using the Gregorian-to-JD formula: JD = 2,461,070.5 (approximately)
2. Apply the tabular Hijri conversion algorithm to get the Hijri date components
3. The result shows the corresponding Hijri month and day
4. If the Hijri month is 9, it is Ramadan, and the Hijri day tells you which day of fasting it is

The calculator performs this multi-step mathematical conversion instantly. The tabular Islamic calendar algorithm uses a 30-year cycle with 11 leap years to approximate the lunar calendar with high accuracy, though actual crescent moon sighting may cause a one-to-two-day difference.

Practical Examples

Example 1: Fatima Checking Today's Ramadan Day

Fatima lives in Chicago and wants to know which day of Ramadan it is today. She enters today's Gregorian date into the calculator. The results show that the Hijri date is 5 Ramadan 1447 AH, meaning it is Day 5 of Ramadan. The progress bar shows 17% of fasting completed, with 25 days remaining. The estimated Eid al-Fitr date appears as approximately March 30, 2026. Fatima uses this information to track her Ramadan goals, including completing her Quran reading plan and calculating how many days of fasting she has left to plan charitable activities.

Example 2: Ahmed Planning for Next Year

Ahmed wants to request time off work for Ramadan in 2027. He enters January 2027, February 2027, and March 2027 into the calculator one by one to find when Ramadan will begin. The calculator shows that a February date converts to approximately 14 Shaban, meaning Ramadan is about two weeks away. By entering late February dates, Ahmed narrows down that Ramadan 1448 AH will begin around mid-February 2027. He requests two weeks of flexible scheduling from his employer. Ahmed also checks the Eid al-Fitr estimate to plan a family celebration with relatives traveling from overseas.

Example 3: Sarah's School Project on Islamic Calendar

Sarah is a high school student working on a comparative calendar project. She uses the calculator to check when Ramadan fell over the past five years, noting how it shifts approximately 10 to 11 days earlier each Gregorian year. She enters the same Gregorian date for 2022 through 2026 and records that the Hijri date advances by roughly 10 or 11 days per year relative to the Gregorian calendar, confirming the 354-day lunar year cycle. Her analysis shows that Ramadan cycles through all four seasons over approximately 33 years, giving her a clear illustration of how lunar and solar calendars differ.

Example 4: Khalid Tracking Fasting Progress for His Family

Khalid manages a household fasting schedule for his family of five. He enters the current date and finds that it is Day 20 of Ramadan, with the progress bar showing 67% completion and only 10 days remaining. He uses this data to plan the family's Laylat al-Qadr worship schedule for the remaining odd nights (Days 21, 23, 25, 27, and 29). He also checks the Eid estimate to coordinate a gathering with extended family members, ordering food and decorations with enough lead time. The calculator helps Khalid stay organized throughout the final third of Ramadan, which holds special spiritual significance.

Ramadan Reference Table

Dates are approximate astronomical calculations. Actual dates may differ by 1-2 days based on local crescent moon sighting.

Tips and Complete Guide

Understanding the Islamic Lunar Calendar

The Islamic calendar is a purely lunar system where each month begins with the sighting of a new crescent moon. Unlike the Gregorian solar calendar, the Islamic year has 354 or 355 days, making it about 11 days shorter than the solar year. This means every Islamic date, including Ramadan, cycles backward through the Gregorian calendar at a rate of approximately 10 to 12 days per year. Over a complete 33-year cycle, Ramadan returns to roughly the same Gregorian dates. Understanding this cycle helps Muslims plan ahead for work schedules, school accommodations, and travel during the holy month.

Preparing for Ramadan Using the Calculator

Use this calculator weeks before Ramadan begins to know exactly when the holy month is approaching. By checking dates in advance, you can gradually adjust your sleep and eating schedule to prepare for the predawn suhoor meal and sunset iftar. Many Muslims begin increasing their worship and charity in the month of Shaban (the month preceding Ramadan) as spiritual preparation. You can use the Hijri Calendar Converter alongside this tool to track the progression of Shaban into Ramadan. Planning ahead also helps with grocery shopping for iftar ingredients, arranging community events, and coordinating family gatherings for the holy month.

Fasting Hours Across Different Locations

The number of fasting hours varies dramatically based on your geographic location and the time of year. Near the equator in cities like Kuala Lumpur or Nairobi, fasting hours remain relatively stable at about 12 to 13 hours regardless of the season. In northern locations like London, Oslo, or Toronto, summer Ramadans can mean fasting for 16 to 20 hours, while winter Ramadans may only require 8 to 10 hours of fasting. For areas near the Arctic Circle where continuous daylight occurs, Islamic scholars generally advise following the prayer times of the nearest city with a distinct sunrise and sunset, or following the times of Makkah. Use our Eid Prayer Time Calculator to check sunrise and sunset times for your location.

Common Mistakes to Avoid

• Relying solely on astronomical calculations: While this calculator provides accurate astronomical dates, the actual start and end of Ramadan in your community depends on crescent moon sighting or your local religious authority's announcement. Always verify with your mosque or national Islamic body.
• Confusing the Hijri calendar year with the Gregorian year: The Hijri year 1447 does not correspond to the Gregorian year 2026 in a one-to-one manner. Ramadan 1447 begins in Gregorian 2026, but other months of the same Hijri year may fall in 2025. Always check the specific date rather than assuming year equivalence.
• Not accounting for regional differences: Different countries and communities may begin Ramadan on different days. Saudi Arabia, Turkey, Pakistan, and local communities in Western countries may all announce different start dates depending on their moon sighting methodology. The calculator provides the astronomical date, which is one reference point.
• Ignoring the 29-day Ramadan possibility: The calculator shows progress based on a 30-day Ramadan, but some years Ramadan lasts only 29 days. The actual end depends on the sighting of the Shawwal crescent moon. If the moon is sighted on the 29th, Ramadan ends and Eid begins the next day.
• Forgetting timezone considerations: Moon sighting happens locally, and because Earth rotates, the crescent may be visible in one time zone but not another. This is a primary reason why different regions may begin Ramadan on different days.

Frequently Asked Questions