〜けど / 〜が: How to Say 'But' and 'Although' in Japanese

The contrast it draws

けど and が are conjunctions that link two clauses with a sense of opposition — English "but" or "although." The first clause sets something up, and the second clause pushes back against it. The two words mean the same thing; what separates them is register (more on that below). Drop one at the join and the contrast takes care of itself:

Tone, register, and how it attaches

The choice between them is purely a matter of politeness. が feels formal and written; けど is what you say in everyday conversation; けれど and けれども sit in between. A quick ladder, most casual to most formal: けど → けれど → けれども → が. Pick the one that matches how polite the rest of your sentence is.

Whichever you pick, it clips straight onto the end of clause 1 — a plain form, a polite form, an い-adjective, or a な-adjective/noun + だ/です — and then clause 2 follows:

Notice how the register of the clause it attaches to sets the tone of the whole sentence:

When what follows isn't a contrast at all

Here's what trips learners up: けど and が don't need a contrast behind them. Both are equally at home gently leading into a request, a question, or a comment. What comes after the connector is the real message; the clause before it just cushions the approach, like English "Excuse me, but…". This is extremely common and very polite.

You can even let the sentence stop right after けど / が and leave the rest unsaid — Japanese loves this. ちょっと聞きたいことがあるんですけど… ("There's something I'd like to ask, but…") hands the floor to the listener to respond.

Watch-outs

1. Confusing が-but with が-subject. This が is a conjunction meaning "but." It is a totally different word from the subject-marker が in 〜が (subject) (e.g. 雨が降る, "rain falls"). Context and position tell them apart: subject-が follows a noun; but-が ends a clause.
2. Mixing politeness levels. Don't pair casual 〜けど with stiff 〜が in the same breath. Keep clause 1 and the overall tone consistent: 高いけど買う (casual) or 高いですが買います (polite).
3. Forgetting だ before けど on nouns. A plain noun needs だ: 学生だけど ("(I'm) a student, but…"), not 学生けど.
4. Using けど/が for a reason. "But" contrasts; it doesn't explain why. For a reason ("because"), use 〜から instead: 高いから買わない ("I won't buy it because it's expensive").

The short version

• けど and が = "but / although," placed between two clauses.
• Register: が formal/written, けど casual; けれど・けれども sit in between.
• Both attach to plain or polite forms; nouns/な-adjectives need だ/です first.
• They also work as a polite softener (すみませんが…) with no real contrast.
• Don't mix up but-が with subject-が — different words.

Practice it