Money and Prices (円)

Every price in Japan is counted in 円 — written 円, read えん (en), and called "yen" in English only because of a nineteenth-century romanization that stuck. Money is the counter you will use on your very first day in the country, and it turns out to be the friendliest counter in the whole system: because 円 begins with a vowel, it triggers none of the sound changes that torment counters like 本 and 分. There is nothing to geminate, nothing to voice — 円 just latches cleanly onto whatever number precedes it. The real challenge of prices isn't 円 itself; it's that everyday amounts routinely climb into the 万 (ten-thousand) range, which makes shopping the single best drill for Japanese large numbers.

円 never changes its sound

Compare 円 with the troublesome counters. 一本 becomes ippon (gemination), 三本 becomes sanbon (voicing) — but 円 does neither, because a vowel-initial counter has no consonant to double or soften. The whole one-through-ten series is boringly regular:

Notice that 六円 is a clean roku-en (not rokk-) and 八円 a clean hachi-en (not happ-): the gemination those numbers normally force simply has no consonant to act on. This is why 円 is the one counter you can produce with zero fear of a euphonic trap — see Counter Sound Changes for the counters where you do have to worry.

The one irregular reading: 四円 is yo-en

The single form worth flagging is 四円. The number 四 is a chameleon: before most counters it is よん (四百 yon-hyaku, 四本 yon-hon, 四枚 yon-mai), but before a small family of counters — 円, 時 (o'clock), 人 (people), 日 (days) — it drops to よ. So 四円 is よえん yo-en, patterning with 四時 yo-ji and 四人 yo-nin, not with 四百 yon-hyaku. You will hear yon-en from some speakers, but yo-en is the standard reading and the one to learn.

Asking the price: いくらですか

The workhorse question for money is いくら (ikura, "how much"). Prices ending amounts are almost never asked with 何円 — you reach for いくら.

The answer slots the number+円 straight into 〜です:

For the fuller family of "how much / how many" words — いくら for money, いくつ for a general count, どのくらい for time and distance — see How Much, How Many.

Hundreds and thousands: where the number's sound changes live

Because 円 itself never changes, every euphonic wrinkle in a price actually belongs to the number, not to 円. The hundreds and thousands behave exactly as they do anywhere else (learned in full on Sound Changes in Numbers):

The hidden ん: 千円 and 一万円

Here is the pronunciation trap the tables can hide. In 千円 and 一万円, the ん of 千 (sen) and 万 (man) sits directly against the え of 円 — and that ん is a full mora, a held nasal, not a sound that blends into the next syllable. English speakers routinely smear 千円 into "seh-nen" (two even syllables) when it should be せ・ん・え・ん — four beats, with a clear nasal before the vowel. Strict Hepburn writes an apostrophe exactly to block the wrong reading:

• 千円 → sen'en, never senen misread as "se-nen"
• 一万円 → ichiman'en, never ichima-nen

Say them slowly, holding the ん: se(n)-en, ichi-ma(n)-en. The apostrophe is your reminder that ん and え are separate beats.

Why prices are the best large-number practice

Japanese groups big numbers by four digits, not three (see Large Numbers), and nothing forces you to internalize that faster than a rent bill or a restaurant tab. A 10,000-yen note is 一万円 ichiman'en — "one ten-thousand" — and this is the number one place English speakers stumble, because English has no single word for "ten thousand."

Read 八万五千円 in bands: 八万 (hachi-man, 80,000) + 五千 (go-sen, 5,000) = 85,000. And 一万五千円 is 一万 + 五千 = 15,000, read ichiman-go-sen-en. Because these amounts come up over an ordinary lunch, prices are the drill that makes the 万-grouping automatic.

Coins and notes

Two handy vocabulary items: 玉 (だま, dama) for coins and 札 (さつ, satsu) for banknotes. Japan uses six coins and (in practice) four notes:

Common mistakes

The four-digit system means a 10,000-yen note is 一万 (ichi-man), never jū-sen ("ten thousands"). Whenever an amount hits 10,000, switch place-words to 万.

Key takeaways

• 円 (en) is vowel-initial, so it never geminates or voices — the friendliest counter in the language.
• Any sound change in a price belongs to the number (三百円 san-byaku-en, 六百円 roppyaku-en), not to 円.
• The one reading to memorize is 四円 = よえん yo-en (like 四時, 四人).
• 千円 is sen'en and 一万円 is ichiman'en — hold the ん as a separate beat.
• Ask prices with いくらですか; answer with number + 円 + です.
• Everyday prices reach the 万 range, so practicing money is the fastest way to master four-digit grouping.