Numbers and Time in Finnish

In Brief

Finnish numbers are built regularly: kaksikymmentäyksi is “twenty-one,” literally “two tens one.” After any cardinal number above one, a countable singular noun normally takes the partitive singular: yksi auto, but kaksi autoa. For time and dates, learn the recurring patterns Kello on kolme (“It is three”), maanantaina (“on Monday”), and ensimmäinen toukokuuta (“the first of May”).

Overview

Numbers, clock times, weekdays, months, and dates are core A1 Finnish. You need them to give your age, buy several items, arrange a meeting, read opening hours, and say when something happens. The basic vocabulary is manageable, but Finnish combines it with its case system: a case is a change in a word’s ending that shows its role in the sentence.

The most important difference from English appears after numbers. English normally marks the counted noun as plural—“two cars”—but Finnish normally uses a singular number followed by a noun in the partitive singular (a form often used for an amount that is not treated as one complete whole): kaksi autoa. Time expressions also use special forms that are worth learning as complete phrases rather than translating word by word.

At beginner level, concentrate on the numbers 0–100, the number-plus-partitive pattern, full hours, weekdays, months, and simple dates. Spoken shortcuts and the way numbers receive case endings belong under “Beyond the Basics”; you will recognize them early, but you do not need to produce every form immediately.

How It Works

Cardinal numbers from 0 to 10

Cardinal numbers tell how many: one, two, three, and so on.

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

Building 11–100

From 11 to 19, add -toista to the unit: yksitoista (11), kaksitoista (12), yhdeksäntoista (19). Historically, this element means “of the second ten,” but beginners can simply learn it as the ending for the teens.

Exact tens are formed with a number plus kymmentä:

Number	Finnish	Number	Finnish
20	kaksikymmentä	60	kuusikymmentä
30	kolmekymmentä	70	seitsemänkymmentä
40	neljäkymmentä	80	kahdeksankymmentä
50	viisikymmentä	90	yhdeksänkymmentä
100	sata

For a number between the tens, place the unit immediately after the tens, with no space or hyphen: kaksikymmentäyksi (21), kolmekymmentäneljä (34), yhdeksänkymmentäyhdeksän (99).

Counting nouns: one versus two or more

With yksi, the noun stays in its basic singular form, called the nominative. With cardinal numbers 2 and above, the noun is normally in the partitive singular.

Quantity	Pattern	Example	Meaning
one	yksi + nominative singular	yksi kirja	one book
two or more	number + partitive singular	kaksi kirjaa	two books
larger number	number + partitive singular	sata kirjaa	one hundred books

Partitive endings vary according to the noun: auto → autoa, kirja → kirjaa, tunti → tuntia, ihminen → ihmistä. The result may look singular to an English speaker, but the number already supplies the quantity. Compare English “three hours” with Finnish kolme tuntia, not a plural form of tunti.

The counted noun is not always partitive. If the number and noun themselves must take another case because of the larger sentence, their forms can change together. That is an advanced extension; the dependable beginner pattern is the one above for basic counting expressions.

Telling the time

Ask Paljonko kello on? or Mitä kello on? (“What time is it?”). Answer with Kello on..., literally “The clock is...”

Time	Finnish	Literal pattern
3:00	Kello on kolme.	The clock is three.
3:05	Kello on viisi yli kolme.	five past three
3:15	Kello on varttia yli kolme.	a quarter past three
3:30	Kello on puoli neljä.	half [to] four
3:45	Kello on varttia vaille neljä.	a quarter to four
3:55	Kello on viisi vaille neljä.	five to four

The crucial English–Finnish contrast is the half hour: puoli neljä means 3:30, not 4:30. Finnish looks forward to the next hour, much like “half to four.” Yli means “past,” while vaille means “to” or “short of.”

For schedules, the 24-hour clock is common: Juna lähtee kello 14.30 (“The train leaves at 14:30”). In speech, context often makes morning or evening clear. You can add aamulla (in the morning), iltapäivällä (in the afternoon), illalla (in the evening), or yöllä (at night).

Use kello before a clock time when saying when something occurs: Kokous alkaa kello kaksi (“The meeting starts at two”). It is often abbreviated klo in notices and schedules: Avoinna klo 9–17 (“Open 9–17”).

Days of the week

English	Finnish	“on ...” form
Monday	maanantai	maanantaina
Tuesday	tiistai	tiistaina
Wednesday	keskiviikko	keskiviikkona
Thursday	torstai	torstaina
Friday	perjantai	perjantaina
Saturday	lauantai	lauantaina
Sunday	sunnuntai	sunnuntaina

To say “on Monday,” Finnish commonly uses the essive case, a form ending in -na/-nä: maanantaina. Weekday names are normally lowercase, unlike English. In a schedule or heading, you may see the basic form maanantai; in a sentence meaning “on Monday,” use maanantaina.

Useful contrasts include tänään (today), huomenna (tomorrow), and eilen (yesterday). For repeated events, the plural forms maanantaisin, tiistaisin, and so on mean “on Mondays,” “on Tuesdays.”

Months and dates

English	Finnish	English	Finnish
January	tammikuu	July	heinäkuu
February	helmikuu	August	elokuu
March	maaliskuu	September	syyskuu
April	huhtikuu	October	lokakuu
May	toukokuu	November	marraskuu
June	kesäkuu	December	joulukuu

Month names are lowercase. When naming a date, Finnish uses an ordinal number—a number indicating position, such as “first” or “third”—followed by the month in the partitive:

• ensimmäinen toukokuuta — the first of May
• toinen kesäkuuta — the second of June
• kolmas joulukuuta — the third of December

In writing, ordinals are shown with a full stop: 1.5. is read ensimmäinen toukokuuta. A full numeric date such as 1.5.2026 follows day–month–year order. When answering “When?”, the ordinal also changes form: ensimmäisenä toukokuuta means “on the first of May.” For basic recognition, first learn the citation-style date ensimmäinen toukokuuta; ordinal inflection is covered more fully in the related article.

To say that something happens in a month, use -ssa/-ssä: tammikuussa (in January), kesäkuussa (in June). The ending attaches to the month’s stem, replacing the final -kuu pattern as shown: kesäkuu → kesäkuussa.

Examples in Context

Finnish	English	Note
Minulla on yksi auto.	I have one car.	yksi + basic singular noun
Pihalla on kaksi autoa.	There are two cars in the yard.	Number 2 + partitive singular
Ostamme kolme lippua.	We are buying three tickets.	lippu → lippua
Kurssi kestää kaksikymmentä tuntia.	The course lasts twenty hours.	Compound number + partitive singular
Hän on kolmekymmentäneljä vuotta vanha.	He/She is thirty-four years old.	Age expression; vuotta is partitive
Kello on kolme.	It is three o’clock.	Full hour
Kello on varttia yli kahdeksan.	It is a quarter past eight.	yli = past
Kello on puoli seitsemän.	It is half past six.	Finnish names the upcoming hour
Bussi lähtee kello 16.20.	The bus leaves at 16:20.	Written 24-hour time
Nähdään maanantaina!	See you on Monday!	Weekday in the essive
Olen Suomessa tammikuussa.	I am in Finland in January.	Month with -ssa
Tänään on ensimmäinen toukokuuta.	Today is the first of May.	Date as the subject/complement
Kokous on kolmantena kesäkuuta.	The meeting is on the third of June.	“When?” form of the ordinal
Kauppa on auki sunnuntaisin.	The shop is open on Sundays.	Repeated weekday

Common Mistakes

Making the counted noun plural

• Wrong: kaksi autot
• Right: kaksi autoa
• Why: In a basic counting phrase, numbers above one take the partitive singular, not the ordinary plural. English plural logic does not transfer directly.

Using the partitive after one

• Wrong: yksi kirjaa
• Right: yksi kirja
• Why: yksi normally takes the basic singular form. The partitive counting rule begins with two.

Reading a half hour from the wrong side

• Wrong interpretation: puoli neljä = 4:30
• Right interpretation: puoli neljä = 3:30
• Why: Finnish counts halfway toward the next hour.

Using a basic weekday after “on”

• Wrong: Nähdään maanantai.
• Right: Nähdään maanantaina.
• Why: A specific weekday used as a time expression normally ends in -na/-nä.

Capitalizing weekdays and months

• Wrong: Maanantaina Toukokuussa
• Right: maanantaina toukokuussa
• Why: Finnish weekday and month names are common nouns and normally begin with lowercase letters.

Treating the month as an unchanged English-style label in a date

• Wrong: ensimmäinen toukokuu
• Right: ensimmäinen toukokuuta
• Why: In an ordinary spoken date, the month is in the partitive form.

Usage Notes

Finnish writing joins compound number words: neljäkymmentäkaksi, not neljä kymmentä kaksi. Long numbers can therefore look intimidating, but they remain structurally transparent when split mentally into tens and units.

Digital schedules often use a point between hours and minutes, for example klo 8.30, although a colon is also encountered in digital contexts. The abbreviation klo is practical in timetables; in a full spoken sentence, say kello.

In everyday conversation, speakers often omit Kello on when the question already makes the topic obvious. Asked Paljonko kello on?, someone can simply answer Kolme or Puoli neljä. Likewise, context may allow maanantaina to stand alone as the answer to “When?”

Beyond the Basics / Advanced Use

You do not need to master the following details at A1, but you will meet them later.

Finnish numbers decline for case. In other words, their endings change along with their grammatical role: kahdessa talossa (“in two houses”), kolmesta kirjasta (“from/about three books”), viidellä eurolla (“with/for five euros”). In such phrases, both the numeral and the noun carry compatible case marking. This is why the simple kaksi autoa rule is best understood as the pattern for a basic, uninflected counting phrase—not as a rule that the noun after a number can only ever be partitive.

Spoken Finnish commonly shortens numbers. You may hear yks, kaks, kolme, neljä, and shortened compounds such as kakskyt for standard kaksikymmentä. Standard written Finnish keeps the full forms, and beginners should learn those first.

Years are normally read as full numbers. The year 2026 can be kaksituhattakaksikymmentäkuusi. Phone numbers, room numbers, prices, decimals, and large numbers introduce their own reading conventions. Decimal punctuation in Finnish is traditionally a comma: 2,5 is kaksi pilkku viisi (“two point five”).

Dates also reveal the broader ordinal system. Ordinals decline just like other Finnish words: ensimmäinen (“first”), ensimmäisenä (“on the first/as the first”), ensimmäisessä (“in the first”), and so forth. Learn date expressions as chunks now, then study the full pattern with ordinal numbers.

Practice Tips

1. Build numbers aloud. Pick five random numbers from 0 to 100 each day. Say the tens first, then the unit: 47 → neljäkymmentä + seitsemän → neljäkymmentäseitsemän.
2. Pair every number with a noun. Cycle through useful words: yksi euro, kaksi euroa; yksi tunti, kolme tuntia; yksi lippu, neljä lippua. This makes the partitive pattern automatic rather than an abstract rule.
3. Narrate your calendar. Say today’s weekday, the next appointment, and its time: Tänään on tiistai. Kokous on keskiviikkona kello puoli kolme. Check especially whether a half-hour expression points to the upcoming hour.

Related Concepts

• Prerequisite: Nominative and Partitive Cases — explains why auto becomes autoa after numbers above one.
• Next step: Ordinal Numbers — develops forms such as ensimmäinen, toinen, and kolmas, including their use and case endings.