これまで

こ

れ

ま

で

Meanings

1

expression, noun which may take the genitive case particle 'no'

usually written using kana alone

Refers to the period from the past up to the present moment. Often used as an adverbial phrase.

けん

を

し

た

。

I had an experience like never before.

これまでのところ、問もん題だいは起おきていない。

So far, no problems have occurred.

2

usually written using kana alone

Used to declare that something is finished or sufficient, often in a conclusive or dismissive tone. Common in spoken Japanese.

今いままでN1sense 1
今まで and これまで both mean 'until now', but 今まで tends to emphasize the immediate present while これまで can cover a longer span leading up to now.
従じゅう来らいN2
これまで is a colloquial, everyday way to say 'up to now', while 従来 is formal and typical of written or technical Japanese.

これからN5sense 1
これまで looks back at the period up to now, while これから points forward to what will happen from now on.
今こん後ごN3sense 1
これまで refers to the past up to the present, whereas 今後 is a more formal word for 'from now on, in the future'.

Applies to each form listed below

rarely-used kanji form

Compound of これ (this) and まで (until). The phrase has been used since classical Japanese to indicate a temporal or situational limit.