Numbers and Counting in Persian

In Brief

Persian normally puts a cardinal number (a number that tells how many) before a noun: سه کتاب means “three books.” Unlike English, the counted noun normally stays singular, so not سه کتاب‌ها. Persian text commonly uses the digits ۰۱۲۳۴۵۶۷۸۹, and numbers such as 25 join the tens and units with و: ۲۵، بیست و پنج.

Overview

Numbers are among the first A1 tools you need in Persian. They appear in prices, ages, addresses, telephone numbers, dates, times, quantities, and everyday shopping. The basic system up to 100 is manageable: learn the individual forms through 20, learn the tens, and then combine a ten and a unit with و.

Persian uses an Arabic-based script, but its number words are Persian. It also commonly uses Persian forms of the Eastern Arabic digits: ۰ ۱ ۲ ۳ ۴ ۵ ۶ ۷ ۸ ۹. International digits such as 0 1 2 3 also occur, especially in mixed-language and technical material, but recognizing Persian digits is essential for reading ordinary Persian.

For an English-speaking learner, the order is reassuringly familiar: the number comes before the thing counted. The important difference is number agreement. In English, “book” becomes plural in “three books”; in standard Persian, the noun (a word naming a person, place, thing, or idea) normally remains singular after a number: سه کتاب, literally “three book.”

How It Works

Persian digits

International	Persian	Word	Romanization
0	۰	صفر	sefr
1	۱	یک	yek
2	۲	دو	do
3	۳	سه	se
4	۴	چهار	chahār
5	۵	پنج	panj
6	۶	شش	shesh
7	۷	هفت	haft
8	۸	هشت	hasht
9	۹	نه	noh

Persian script runs from right to left, but a multi-digit numeral keeps its normal place value. ۲۵ is 25 and is read بیست و پنج, not 52. Mixed left-to-right and right-to-left text can look awkward on a screen, so cursor movement is not always a reliable guide to the order.

Digit shapes vary across languages that use Arabic-derived scripts. In particular, Persian ۴، ۵، ۶ may differ from the shapes you have seen in Arabic. Learn the set used in Persian rather than treating every “Arabic numeral” font as identical.

Numbers from 0 to 20

Learn 0–10 and 20 as core forms. The words from 11 to 19 are historically built around ten, but several have contracted sounds; memorizing each complete word is easier and safer.

Number	Persian	Romanization
0	صفر	sefr
1	یک	yek
2	دو	do
3	سه	se
4	چهار	chahār
5	پنج	panj
6	شش	shesh
7	هفت	haft
8	هشت	hasht
9	نه	noh
10	ده	dah
11	یازده	yāzdah
12	دوازده	davāzdah
13	سیزده	sizdah
14	چهارده	chahārdah
15	پانزده	pānzdah
16	شانزده	shānzdah
17	هفده	hefdah
18	هجده	hejdah
19	نوزده	nuzdah
20	بیست	bist

Romanization is a learning aid, not a second Persian spelling system. Listen to native audio as well: everyday pronunciation may compress some vowels, and English spelling habits do not always predict Persian sounds accurately.

The tens up to 100

Number	Persian	Romanization
20	بیست	bist
30	سی	si
40	چهل	chehel
50	پنجاه	panjāh
60	شصت	shast
70	هفتاد	haftād
80	هشتاد	hashtād
90	نود	navad
100	صد	sad

These forms must be learned individually. Do not try to make “six tens” or “nine tens” as you might in a completely regular number system.

Building numbers between the tens

To form a number such as 21 or 68, say the ten, then و, then the unit:

tens + و + unit

• ۲۱ — بیست و یک (bist-o yek)
• ۳۴ — سی و چهار (si-o chahār)
• ۶۸ — شصت و هشت (shast-o hasht)
• ۹۹ — نود و نه (navad-o noh)

The conjunction و means “and.” Its careful standalone pronunciation is often given as va, but inside compound numbers it is normally pronounced as an unstressed -o: بیست و پنج sounds approximately bist-o panj. It is written as a separate و, even though speech links it closely to the surrounding words.

Exact tens do not need و: سی is 30 and هفتاد is 70. The number 100 is صد.

Counting nouns: number first, singular noun

The beginner pattern is:

number + singular noun

Persian pattern	Meaning
یک کتاب	one book
دو کتاب	two books
ده دانشجو	ten students
صد روز	one hundred days

Persian does have plural suffixes, especially ها, but they are normally unnecessary after an exact number. The number already shows that there is more than one item. Therefore:

• سه کتاب = three books
• سه کتاب‌ها = not the normal neutral way to say “three books”

There is no gender agreement to memorize. The same number form is used with every noun: دو مرد “two men,” دو زن “two women,” and دو خانه “two houses.”

With یک, the noun is also singular: یک ماشین “one car” or, depending on context, “a car.” The broader use of یک as an indefinite marker belongs to the topic of Persian indefiniteness.

Examples in Context

Persian	English	Note
یک، دو، سه، چهار، پنج	one, two, three, four, five	A basic counting sequence
شش، هفت، هشت، نه، ده	six, seven, eight, nine, ten	Continue the sequence
من سه کتاب دارم.	I have three books.	کتاب remains singular
او دو خواهر دارد.	He/She has two sisters.	No gender change in دو
این کلاس بیست دانشجو دارد.	This class has twenty students.	Exact ten, so no و
این کتاب چهل صفحه دارد.	This book has forty pages.	صفحه stays singular
شمارهٔ اتاق بیست و پنج است.	The room number is twenty-five.	Compound number with و
قیمتش نود و نه هزار تومان است.	Its price is ninety-nine thousand tomans.	A realistic price expression
ما هفت روز اینجا می‌مانیم.	We are staying here for seven days.	Number before a time noun
ساعت سه است.	It is three o’clock.	A number used for time
ده سیب می‌خواهم.	I want ten apples.	Useful while shopping
اتوبوس شمارهٔ سی و دو کجاست؟	Where is bus number thirty-two?	A label or route number
صد نفر آمدند.	One hundred people came.	نفر counts people
شمارهٔ من ۰۹۱۲… است.	My number is 0912…	Telephone digits are read individually

A written numeral can replace the number word without changing the grammar: ۳ کتاب and سه کتاب both mean “three books.” In polished prose, style and context determine whether words or digits are preferred.

Common Mistakes

Making the noun plural after a number

• Wrong: سه کتاب‌ها
• Right: سه کتاب
• Why: An exact number already marks plurality, so the counted noun normally remains singular.

Reversing the number and noun

• Wrong: کتاب سه when you mean “three books”
• Right: سه کتاب
• Why: The neutral counting pattern places the number before the noun. A noun followed by a number can occur in labels or special structures, but it is not the basic quantity phrase.

Leaving out و in compound numbers

• Wrong: بیست پنج
• Right: بیست و پنج
• Why: Persian joins tens and units with و, normally pronounced -o in this position.

Reading Persian digits backward

• Wrong: Reading ۲۵ as 52 because Persian runs right to left
• Right: Read ۲۵ as بیست و پنج, 25
• Why: Multi-digit numerals preserve their place-value order even inside right-to-left text.

Inventing regular forms for the tens

• Wrong: Trying to construct 60 directly from شش and ده
• Right: Learn شصت as the word for 60
• Why: The tens are established vocabulary items, not a fully predictable “unit + ten” pattern.

Pronouncing و too strongly in every number

• Less natural in ordinary counting: bist va panj
• Usual: بیست و پنج pronounced approximately bist-o panj
• Why: The written word is و, but its unstressed pronunciation in a compound number is normally -o.

Usage Notes

In handwriting, signs, news, calendars, receipts, and Persian-language interfaces, Persian digits are common. International digits may appear in technical contexts, imported data, web addresses, or bilingual material. Both sets represent the same values; this is a difference in shape, not a different arithmetic system.

Long strings such as telephone numbers, identification numbers, room numbers, and codes are often read digit by digit rather than as one large quantity. Thus a telephone prefix beginning ۰۹۱۲ can be read as the sequence صفر، نه، یک، دو. By contrast, a price written ۲۵ is normally read as the quantity بیست و پنج.

Spoken Persian often uses تا after a number as a general counting word: سه تا کتاب “three books.” It is extremely common in conversation, but plain سه کتاب is also grammatical and is the safest core pattern for a beginner. People are often counted with نفر, as in پنج نفر “five people.” These words are called classifiers—words inserted between a number and what is counted—and receive fuller treatment in the related A2 topic.

Beyond the Basics / Advanced Use

You do not need to master the following points at A1, but they explain forms you will soon encounter.

Larger compound numbers

The same linking principle continues above 100. Components are connected with و:

• ۱۰۱ — صد و یک — one hundred and one
• ۱۲۵ — صد و بیست و پنج — one hundred and twenty-five
• ۲۴۸ — دویست و چهل و هشت — two hundred and forty-eight

Hundreds introduce additional forms, so this article keeps its main inventory within 0–100. The useful general insight is that و can connect several levels of a larger number, not only tens and units.

Cardinal numbers versus ordinal numbers

The numbers taught here are cardinal numbers: they answer “how many?” Persian also has ordinal numbers, which show order—“first,” “second,” “third.” Common forms include اول “first,” دوم “second,” and سوم “third.” Do not use an ordinal when you mean a quantity: سه کتاب is “three books,” while کتاب سوم is “the third book.” Notice that the syntax is different as well.

Classifiers and style

Conversational تا can make a counted phrase sound natural and explicit: دو تا چای “two teas.” More specific classifiers occur with particular kinds of nouns, and نفر is standard for people. Formal writing may prefer a suitable classifier or a plain number-plus-noun phrase, depending on what is being counted. For now, recognize these forms without assuming that every Persian noun requires a classifier.

Why a plural may occasionally appear

The beginner rule—singular noun after a number—is the normal neutral rule. In advanced or context-heavy language, a plural-marked expression may refer to a particular set, categories, or groups rather than simply count individual items. Such marked uses do not change how you should normally produce “three books”: say سه کتاب.

Practice Tips

1. Learn in three passes. First master 0–10, then 11–20, then the tens. Once the tens are automatic, generate random compounds such as 37, 54, and 86 using و.
2. Convert in both directions. Make two columns: write ۴۷ and supply چهل و هفت, then start with هفتاد و دو and write ۷۲. This trains both reading and production.
3. Count real objects aloud. Use books, cups, messages, or days: یک کتاب، دو کتاب، سه کتاب. Keep the noun singular every time, and occasionally add conversational تا so that you can recognize both patterns.

Related Concepts

• Next step: Time Expressions and Days — use numbers to tell time and talk about days and dates.
• Next step: Quantity and Partitive Expressions — express amounts such as some, much, a little, or part of a whole.
• Next step: Classifiers and Counting Objects — learn تا, نفر, and more specific counting units in greater detail.