Numbers One to Ten

Finnish numbers 1–10 are the foundation of counting. To become proficient in using them, you need to understand the formal names and the grammatical rules they trigger.

1. The Formal List (Kirjakieli)

• 0: nolla
• 1: yksi
• 2: kaksi
• 3: kolme
• 4: neljä
• 5: viisi
• 6: kuusi
• 7: seitsemän
• 8: kahdeksan
• 9: yhdeksän
• 10: kymmenen

2. The Grammatical Rule (Nominative and Partitive)
When a number is in its basic form (the nominative), it dictates the case of the noun and any adjectives modifying it:

• Number 1: The noun and adjectives stay in the basic form. Example: yksi iso auto (one big car). Note that as a total object, the number 1 inflects into the genitive-accusative (e.g., Ostin yhden ison auton), whereas numbers 2-10 look identical to the nominative.
• Numbers 0 and 2–10+: The noun and any modifying adjectives must be in the partitive singular. Examples: nolla autoa (zero cars), kaksi isoa autoa (two big cars).

Additionally, when an indefinite numeral-noun phrase (like kaksi autoa) is the subject of a sentence, the verb takes the third-person singular form (e.g., Kaksi autoa on pihalla). However, definite subjects with numerals frequently trigger plural verbs to emphasize definiteness (e.g., Nämä kaksi autoa ovat pihalla), though singular verbs are also grammatically acceptable.

3. Case Agreement (Congruence)
It is important to note that the partitive rule only applies when the number is the subject or a basic object. If the numeral declines into a specific case (including the partitive), the noun and adjectives must match it in that same case, and they generally remain in the singular form. Example: kahdessa isossa autossa (in two big cars). An exception is plural-only nouns (pluralia tantum), which require both the numeral and the noun to be in the plural (e.g., kahdet sakset, kaksissa häissä).

4. Partitive Forms of Numerals
Because partitive objects are very common, it is essential to know the partitive forms of the numbers themselves: yhtä, kahta, kolmea, neljää, viittä, kuutta, seitsemää, kahdeksaa, yhdeksää, kymmentä.

5. Spoken Finnish (Puhekieli)
Everyday Finnish often shortens several of these numbers, with variation by speaker and setting. You will frequently hear yks, kaks, viis, kuus, and seittemän for 7. The full words kolme and neljä are also common in ordinary sentences; special rapid-counting forms belong to a separate register. The internal 'd' is routinely dropped not only in numbers 8 and 9 (kaheksan, yheksän), but also in the inflected forms of other numbers (e.g., yhden → yhen, kahden → kahen, viiden → viien).

Furthermore, numbers are often referred to using substantive nouns (e.g., 'the number one', 'the number seven'): ykkönen, kakkonen, kolmonen, nelonen, viitonen, kuutonen, seiska, kasi, ysi, kymppi. For rapid counting in games or music, you will hear the ubiquitous system: yy, kaa, koo, nee, vii, kuu, see, kasi, ysi, kymppi.

A Partitive Verb
Etsin kahta isoa autoa means “I am looking for two large cars.” Etsiä takes a partitive object here, so the numeral is kahta, the adjective is isoa, and the noun is autoa. Compare a completed purchase: Ostin kaksi isoa autoa.