Japanese Conditionals: たら vs ば vs と vs なら Complete Guide
Master all 4 Japanese conditional forms - たら, ば, と, and なら. Complete comparison with examples, usage rules, and practice exercises for JLPT N4-N3.
Read time: 8 min readSearches: 3,200+ monthlyUpdated: February 14, 2026
Understanding the difference between たら (tara),ば (ba), and と (to) is one of the most important distinctions in Japanese grammar. This comprehensive guide will help you master when and how to use each one correctly.
Grammar Point A
たら (tara)
If/When (completed action trigger)
Used when the result happens AFTER the condition is completed. Most versatile conditional.
Used when result ALWAYS follows automatically. Natural consequences, machine operations, instructions.
Formation: Plain form + と
Quick Comparison Table
Aspect
たら
ば
と
Meaning
If/When (completed action trigger)
If (hypothetical condition)
When/If (automatic result)
Usage
Used when the result happens AFTER the condition is completed. Most versatile conditional.
Used for hypothetical situations, general truths, and giving advice. More formal/literary.
Used when result ALWAYS follows automatically. Natural consequences, machine operations, instructions.
Formation
Verb た形 + ら / Adjective かった + ら / Noun だった + ら
Verb stem + ば / い-adj → ければ / な-adj/Noun + であれば
Plain form + と
JLPT Level
N4
N4
N4
Key Differences
1
Time relationship: たら: Result AFTER condition completes. と: Result IMMEDIATELY/automatically follows. ば: Hypothetical. なら: No specific time relationship.
Correction: 雨が降ったら、傘を持っていく (or 雨なら if responding to someone)
なら works best when responding to someone's statement, not for general conditions.
Practice Exercises
Test your understanding with these practice questions. Click on your answer to see if you are correct.
0 / 6 answered
Q1
このボタンを押す___、電気がつきます。
When you press this button, the light turns on.
Q2
東京に行く___、秋葉原に寄ってください。
If you're going to Tokyo, please stop by Akihabara.
Q3
もっと早く起き___、電車に間に合ったのに。
If I had woken up earlier, I would have made it to the train.
Q4
仕事が終わっ___、飲みに行きましょう。
When work is finished, let's go drinking.
Q5
冬になる___、雪が降ります。
When winter comes, snow falls.
Q6
安___買います。
If it's cheap, I'll buy it.
Frequently Asked Questions
たら is the most versatile and commonly used in everyday conversation. It works in almost any situation, which is why many textbooks recommend mastering it first. However, each conditional has situations where it's the best or only choice.
Almost, but not quite. たら won't sound natural for automatic/natural phenomena (と is better) or when you're responding to what someone just said (なら is better). For giving advice in formal situations, ば might be preferred.
と implies an automatic, predictable result. Commands and requests involve human will and choice, which contradicts the 'automatic' nature of と. That's why sentences like 「時間があると、来てください」sound ungrammatical.
In many cases, they're interchangeable. The main differences: 1) たら emphasizes sequence (condition completes, then result), while ば is more hypothetical. 2) たら is more conversational, ば is more formal/literary. 3) たら allows any follow-up action, while ば has restrictions on commands/requests.
Use なら when: 1) Responding to what someone said ('If that's the case...'), 2) Introducing a topic for advice ('Speaking of X, I recommend Y'), 3) Making recommendations based on someone's stated plan. If you're not responding to something, another conditional is probably better.
Summary
Use たら when...
Used when the result happens AFTER the condition is completed. Most versatile conditional.
Use ば when...
Used for hypothetical situations, general truths, and giving advice. More formal/literary.
Pro Tip: The best way to master the difference is through reading and listening practice. Pay attention to how native speakers use these grammar points in context.
