Conditional 〜なら: How to Say 'If That's the Case' (Meaning + Examples)
What it means
なら sets up a condition based on context — "if it's true that…" or "if we're talking about X, then…". Unlike the other conditionals, it doesn't say one event leads to another in time. Instead it picks up a topic or premise — often something the other person just mentioned or something you're assuming for the sake of the reply.
Think of it as: "If that's the situation, then here's my take." That's why なら is the natural choice for giving advice and reacting to what you just heard.
日本に行くなら、京都がいいよ。
にほんに いくなら、きょうとが いいよ。
If you're going to Japan, Kyoto is good.
Picks up the listener's plan ('going to Japan') and responds with advice.
安いなら、ヤッタンは買う。
やすいなら、ヤッタンは かう。
If it's cheap, Yattan will buy it.
モチが行くなら、私も行く。
モチが いくなら、わたしも いく。
If Mochi is going, I'll go too.
Reacting to the premise 'Mochi is going.'
How to form it
Just add なら directly to the plain (dictionary) form of the word — no extra particle, no です:
| Word type | How to attach | Example |
|---|---|---|
| Verb | plain form + なら | 行く → 行くなら (if you're going) |
| い-adjective | plain form + なら | 安い → 安いなら (if it's cheap) |
| な-adjective | drop な + なら | 静か → 静かなら (if it's quiet) |
| Noun | noun + なら | 寿司 → 寿司なら (if it's sushi) |
The negative and past plain forms work the same way: 行かないなら ("if you're not going"), 行ったなら ("if you went"). You'll also hear のなら / んなら in speech, which softens the tone but means the same thing.
Reacting to what someone said
This is なら's home turf. Someone gives you information, and you reply with なら to mean "in that case…":
「頭が痛い。」「痛いなら、薬を飲んだほうがいいよ。」
「あたまが いたい。」「いたいなら、くすりを のんだ ほうが いいよ。」
'My head hurts.' 'If it hurts, you should take some medicine.'
なら responds directly to the other person's statement.
先生なら、その漢字を知っているはずだ。
せんせいなら、その かんじを しって いる はずだ。
If it's the teacher, she should know that kanji.
Noun + なら: 'if we're talking about the teacher…'
Because it leans on context, you often can't swap in ば・たら・と here. Those conditionals describe a real cause-and-effect or sequence; なら is about taking up a premise and giving your response to it.
The main clause can come first
Here's the feature that sets なら apart. With たら, the なら-style "if" event usually happens first and the result follows. But with なら, the action in the main clause can happen before the action in the なら clause:
チケットを買うなら、早いほうがいいよ。
チケットを かうなら、はやい ほうが いいよ。
If you're going to buy tickets, sooner is better.
The buying (なら clause) happens AFTER the advice — order is flexible.
お酒を飲むなら、車を運転しないで。
おさけを のむなら、くるまを うんてんしないで。
If you're going to drink, don't drive.
The 'don't drive' applies before and around the drinking, not after it.
In チケットを買うなら、早いほうがいい, the "being early" (advice) comes before the actual buying. Use たら instead — チケットを買ったら — and it would mean "after you buy the tickets, [something happens]", which is not the point. This timing freedom is unique to なら.
How it compares to ば・たら・と
Japanese has four big conditionals, and なら is the odd one out. ば is for general or hypothetical conditions, たら is the all-purpose "if/when (after)", and と is for natural, automatic results. なら alone responds to a stated topic or premise and lets the clauses come in either order.
For the full side-by-side breakdown, see the comparison guide: 〜と・〜ば・〜たら・〜なら. For giving advice inside a なら sentence, 〜ほうがいい pairs with it constantly.
Common mistakes
- Adding です/だ before なら. Attach なら straight to a noun or plain form: 学生なら (✓), not 学生だなら. (Past だった is fine: 学生だったなら.)
- Leaving な on a な-adjective. Drop it: 静かなら (✓), not 静かななら.
- Using なら for a simple time sequence. "When spring comes, it gets warm" is a natural result — use と or たら (春になると暖かくなる), not なら.
- Forcing なら where cause-and-effect is meant. "If you press this button, it turns on" is automatic — use と (押すとつく), since なら implies "if we're talking about pressing it…".
Quick recap
- なら = the contextual "if" — picks up a topic or premise and gives your response.
- Attach it directly to a plain form or noun; drop な on な-adjectives.
- It's the natural choice for reacting to what someone just said and for advice.
- Unique trick: the main clause can come before the なら clause's action.
- For real sequence or cause-and-effect, reach for ば・たら・と instead.
Your turn
Choose when 〜なら is the right conditional (and when ば・たら・と fit better).
Start the 5-question drill →Frequently asked questions
What's the difference between なら and たら?
たら describes one event happening after another (買ったら = 'after you buy'). なら picks up a premise and responds to it (買うなら = 'if you're going to buy…'), and its main clause can come before the なら action. They are not interchangeable when timing matters.
Do I need です or だ before なら?
No. Attach なら directly: 学生なら, 静かなら, 安いなら, 行くなら. The only だ-like form you keep is the past だった (学生だったなら).
Why does なら feel like it's 'replying' to something?
Because it works on context. なら supposes a topic or premise — usually something the other person just said or that you're assuming — and gives your take on it. That's why it's so common in advice and conversation.
Can the main clause really happen before the なら clause?
Yes — this is なら's signature. In チケットを買うなら早いほうがいい ('if you're going to buy tickets, sooner is better'), the advice applies before the buying. With たら the order would be forced the other way.