“How long” in Japanese
Short answer
How long in Japanese is “どの位” (donokurai). Full meaning: how long, how far, how much.
Other ways to say “How long” in Japanese
どれ位
dorekurai how long, how far, how much
何時まで
itsumade how long?, till when?
何年
nanidoshi how many years, how long; what year
何時から
itsukara since when, from when, how long; from what time
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