Informational Purpose Only

This calculator is designed to provide an estimate of your missed fasts. For specific religious rulings or complex situations, please consult a qualified scholar.

Missed Fast (Qaza) Calculator

Accurately estimate the number of missed fasts from your years of puberty to the present day, considering periods of regular fasting and other adjustments.

Step 1 of 5: Introduction 20%

Concept of Qaza

In Islam, Qaza refers to making up for missed religious obligations, such as Salah or Fasting. It is a debt owed to Allah (SWT) and should be fulfilled as soon as possible.

Puberty (Bulugh)

Religious obligations become mandatory from the age of puberty. If the exact date is unknown, scholars often suggest 12 for girls and 15 for boys.

Intention (Niyyah)

When making up fasts, ensure you make the intention before dawn that you are fasting for a missed day from your past.

Useful Tip

It is recommended to keep a written record or use an app to track your progress as you complete each missed fast. This tool helps you establish the starting number.

Personal Parameters

Please provide your age details to calculate the total span of obligatory fasting years.

Years
Years
Age when fasting became mandatory for you.

Fasting History

Exclude the years you fasted regularly and adjust for natural factors.

Years
Number of years from puberty until now where you kept all fasts.
Days

Women are exempt from fasting during their menstrual cycle. We will subtract these days from your missed years total.

Already Made Up

If you have already completed some Qaza fasts, enter them here.

Days

Your Qaza Summary

Missed Span 0 Years
Gross Fasts 0 Days
Adjustments -0 Days
Total Qaza Required 0 Days

Remaining Fasts

0

Days

Summary
0 Years
0 Days

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Religious Note

Fasting is one of the Five Pillars of Islam. Making up for missed fasts is a priority. If one is permanently unable to fast due to old age or chronic illness, they must pay Fidya (feeding a poor person for each day).

Disclaimer: This tool is for estimation purposes. Results may vary based on exact lunar dates and personal health.

Fasting & Qaza FAQ

What if I don't know the exact number?

Scholars recommend making a "best estimate" that satisfies your conscience. It is better to fast a few extra days than to miss any mandatory ones.

When can I keep Qaza fasts?

Qaza fasts can be kept on any day of the year except for the five prohibited days: the two Eids (Eid al-Fitr, Eid al-Adha) and the three days of Tashreeq (11th, 12th, 13th of Dhul Hijjah).

Can I combine Qaza with Sunnah fasts?

Most scholars agree that you should prioritize the Qaza fast with a primary intention for it. Some schools allow the reward of Sunnah (like 6 days of Shawwal) to be attained simultaneously, but others require separate fasts.

Does Qaza fast require a continuous chain?

No, Qaza fasts do not need to be kept consecutively. You can keep them whenever you have the health and opportunity to do so.

Important Disclaimer

This tool provides estimates based on general Islamic rulings. Rulings may vary between different schools of thought (Hanafi, Shafi'i, Maliki, Hanbali). Please consult a qualified Islamic scholar or local Imam for specific religious guidance. This tool is strictly for informational purposes.