About

Hebrew number words follow a gendered inflection system where cardinal numerals from 1 to 19 change form depending on the grammatical gender of the counted noun. Getting this wrong produces text that reads as grammatically broken to native speakers. This converter implements the full rule set: feminine default forms, masculine alternates, the construct-state (סמיכות) for thousands and millions, and the traditional avoidance of digit combinations that spell sacred names (replacing 15 with ט״ו and 16 with ט״ז). The tool handles integers from 0 to 999,999,999,999,999 (999 trillion).

The algorithm decomposes the input by scale groups (trillions, billions, millions, thousands, units), converts each group independently using lookup tables for units, teens, tens, and hundreds, then joins them with proper Hebrew conjunctions. Note: this tool produces cardinal number words only. It does not generate ordinal forms or gematria letter-values. Fractional and negative inputs are outside scope. Pro tip: in Hebrew, the default grammatical gender for standalone counting is feminine. Use masculine only when the counted noun is grammatically masculine.

Formulas

The conversion algorithm decomposes the input number n into scale groups:

n = T × 10¹² + B × 10⁹ + M × 10⁶ + K × 10³ + U

Where T = trillions group (0 - 999), B = billions group, M = millions group, K = thousands group, U = units group. Each group G is further decomposed:

G = h × 100 + r

Where h = floor(G ÷ 100) gives the hundreds digit, and r = G mod 100 gives the remainder. If r ≤ 19, a direct lookup is used (with gender inflection). If r ≥ 20, tens and units are looked up separately and joined with the conjunction ו ("and"). The thousands group applies construct-state forms: 1000 → אלף, 2000 → אלפיים, 3000 - 10000 → masculine construct + אלפים.

Reference Data

Number	Feminine (default)	Masculine
0	אפס	אפס
1	אחת	אחד
2	שתיים	שניים
3	שלוש	שלושה
4	ארבע	ארבעה
5	חמש	חמישה
6	שש	שישה
7	שבע	שבעה
8	שמונה	שמונה
9	תשע	תשעה
10	עשר	עשרה
11	אחת עשרה	אחד עשר
12	שתים עשרה	שנים עשר
15	חמש עשרה	חמישה עשר
16	שש עשרה	שישה עשר
20	עשרים	עשרים
100	מאה	מאה
200	מאתיים	מאתיים
1,000	אלף	אלף
2,000	אלפיים	אלפיים
3,000	שלושת אלפים	שלושת אלפים
10,000	עשרת אלפים	עשרת אלפים
1,000,000	מיליון	מיליון
2,000,000	שני מיליון	שני מיליון
1,000,000,000	מיליארד	מיליארד
1,000,000,000,000	טריליון	טריליון

Frequently Asked Questions

Hebrew nouns carry grammatical gender (masculine or feminine), and cardinal numbers from 1 to 19 must agree with the gender of the noun they modify. Counter-intuitively, the "masculine" number forms end in ה (-ah) for 3-9, while "feminine" forms do not. This is a historical artifact of Semitic morphology. When counting abstractly without a noun, the convention is to use the feminine form.

The expected forms would combine yod (10) + heh (5) = י"ה and yod (10) + vav (6) = י"ו. These letter combinations spell abbreviated forms of the divine name (יה and יו). To avoid writing God's name casually, Hebrew uses ט"ו (9+6) for 15 and ט"ז (9+7) for 16. This converter applies these replacements in the word forms as well, following standard convention.

The construct state is a Hebrew grammatical structure where two nouns are linked (like English "X of Y"). For numbers 3,000-10,000, Hebrew uses the construct form of the number before אלפים (thousands): שלושת אלפים (three-of thousands), not שלושה אלפים. The converter applies masculine construct forms for the thousands multiplier regardless of the selected gender, because אלף (thousand) is grammatically masculine.

Numbers above one million use loanwords: מיליון (million), מיליארד (billion/milliard), and טריליון (trillion). The multiplier before these scale words uses masculine forms because these loanwords are treated as masculine nouns in Hebrew. For 2 million, the dual form שני מיליון is used. For 3+ million, standard masculine forms apply (e.g., שלושה מיליון).

The tool converts integers from 0 to 999,999,999,999,999 (999 trillion). This is a JavaScript-safe integer range limit. Numbers beyond this threshold lose precision in standard floating-point representation. The tool validates input and rejects values outside this range or non-integer inputs.

Yes. The conjunction ו ("and") is prefixed to the last element in a compound number within each group. For example, 325 is שלוש מאות עשרים וחמש (three hundred twenty and-five). Between scale groups (thousands, millions), no conjunction is used. The converter applies these rules automatically based on the position of each component in the decomposed number.