Is there an expression in Japanese that is equivalent to "as far/long as I/you X", for example "as far as I know", "as far as I'm concerned", "as much as you want", "as long as he is still alive" etc? Or perhaps are all those English expressions expressed differently in Japanese?

Some example sentences:

  1. As far as I know, it only takes 15 minutes to travel from Kyoto to Osaka by bullet train.

  2. As far as I'm concerned, that kind of questions is not suitable to be asked here.

  3. Please take as much as you want.

  4. He is working hard to achieve that golden dream of his as long as he is alive.

EDIT: One more expression: "as soon as possible"

  • Is example 4 really “as long he is alive,” or is it an error for “as long as he is alive”? Aug 9, 2011 at 13:22
  • @Tsuyoshi: Fixed. It was a typo.
    – Lukman
    Aug 9, 2011 at 13:24

2 Answers 2


Usually that construction is achieved by using 「限り」.

  • 知る限り (as far as one knows)
  • できる限り (as far as possible)
  • 生きている限り (as long as one lives)
  • 私に関する限り (as far as I'm concerned, i.e. "for my part [but I won't speak for others, because they disagree with me]")

The construction in your second sentence ("as far as I'm concerned") is usually expressed with other expressions like 「私にとっては」or 「自分としては」.

Edit: "As much as one wants" is usually expressed as 「好きなだけ」. That だけ can be used in other phrases, like 「必要なだけ」 (as much as one needs)

  • I knew 限り is used in set-phrase できる限り but I didn't know I could attach it to any verbs. Thanks! Owh one more thing, can I attach it to adjective, for example 早い限り to say "as soon as possible"?
    – Lukman
    Aug 9, 2011 at 7:07
  • No,「早い限り」would mean "as long as it's early." You can think of 「限り」as "extent." 知る限り means "to the extent of my knowledge," and 早い限り means "to the extent that it's early." But I almost never see 限り attached to adjectives, for what it's worth.
    – Amanda S
    Aug 9, 2011 at 7:26
  • How do we say "as soon as possible" then? 早められる限り = to the extent of you are able to hasten?
    – Lukman
    Aug 9, 2011 at 7:55
  • 3
    @Lukman: できるだけ早く。
    – Axioplase
    Aug 9, 2011 at 9:40
  • 3
    @Lukman: なるべく早く is another option. (The difference was addressed here.) Aug 9, 2011 at 12:40

As far as I know,


As far as I'm concerned


Please take as much as you want.


as long he is alive.


as soon as possible


  • Is using multiple constructs as you suggested better than Tsuyoshi's suggestion of using 限り?
    – Lukman
    Aug 9, 2011 at 7:11
  • Tsuyoshi did not suggest anything. Amanda did. And I'm using several constructs, because there is no reason for one construct in language A to be mapped to one construct in langage B…
    – Axioplase
    Aug 9, 2011 at 9:40
  • Oops .. got confused between two browser tabs :P .. anyway thanks.
    – Lukman
    Aug 9, 2011 at 9:47

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .