Date Calculator - Persian Numerals
Calculate days, weeks, months, and years between dates with Persian numeral system support.
About This Numeral System
Persian numerals (۰ through ۹) are used in Iran, Afghanistan (for Dari), and in some Pakistani Urdu contexts. They share the same ancestor as Eastern Arabic numerals but have distinct glyph forms — most visibly, the Persian 4 (۴), 5 (۵), and 6 (۶) differ from their Arabic counterparts. If you work with Persian, Dari, or Urdu documents, this calculator renders results in the numeral forms you expect.
A free online date calculator for computing the time between two dates or adding and subtracting time from a given date. Count days, weeks, months, and years between any two dates, with correct handling of leap years, varying month lengths, and daylight saving time transitions. The calculator also counts business days excluding weekends — and lets you choose which days count as weekends to match your country (Saturday-Sunday, Friday-Saturday, or Thursday-Friday). Add or subtract a number of days from a date to find a future or past date. Useful for project planning, contract deadlines, pregnancy due dates, and visa duration calculations.
How This Calculator Works
Date Difference Calculation: Difference = Date2 − Date1 (in milliseconds, then converted)
The calculator converts both dates to milliseconds since the Unix epoch, subtracts them, and converts the result into days, weeks, months, and years. Leap years and varying month lengths are handled by the JavaScript Date object. Business-day calculations exclude weekends, with configurable weekend days for different countries.
Frequently Asked Questions
Why does my date calculation differ by one day from what I expected?
The most common cause is a time zone mismatch. If you count days between January 15 and January 20, the answer depends on whether you mean inclusive counting (6 days including both endpoints) or exclusive counting (5 days between them). This calculator uses exclusive counting by default. Another cause: if your dates span a DST transition, the clock shifts by one hour, which can affect hour-level calculations even though day-level calculations are unaffected.
Does it account for leap years?
Yes. The calculator correctly handles leap years, varying month lengths, and daylight saving time transitions. Leap years add February 29 to the count, and the calculator automatically detects leap years using the Gregorian calendar rule (divisible by 4, except century years which must be divisible by 400).
How do I count business days excluding weekends in different countries?
The calculator lets you choose which days of the week count as weekends. Most countries use Saturday-Sunday, but several Middle Eastern countries use Friday-Saturday, and some use Thursday-Friday. Set the weekend days in the calculator settings to match your region before counting working days.
What can the date calculator compute?
The date calculator can find the number of days, weeks, months, and years between two dates. It can also add or subtract a number of days from a given date to find a future or past date.
How do Persian numerals differ from Arabic numerals?
The most visible differences are in the digits 4, 5, and 6. Persian 4 (۴) looks like a small triangle, while Arabic 4 (٤) is more angular. Persian 5 (۵) looks like a small heart shape, while Arabic 5 (٥) is a circle. Persian 6 (۶) resembles a reversed 9, while Arabic 6 (٦) is a single dot above the line. If you are working with documents from Iran or Afghanistan, use the Persian mode. For documents from Egypt, Saudi Arabia, or the UAE, use the Arabic mode.
Worked Examples
Input: From 2026-01-01 to 2026-09-15
Result: 257 days, 36 weeks 5 days, 8 months 14 days. Business days (Mon–Fri): 184.
Key Features
- Days, weeks, months, years between dates
- Add or subtract time from any date
- Leap year and DST aware
- Business days calculation
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