We have to go vs We must go

When to use each in English, with meaning, register, and examples.

We have to go

High-frequency chunk

We must go

Top 2,000 (common)
Most common: We have to go
 We have to goWe must go
Pronunciation🇬🇧 //wiː hæv tuː ɡoʊ//🇺🇸 //wi hæv tə ɡoʊ//🇬🇧 //wiː mʌst ɡoʊ//🇺🇸 //wi mʌst ɡoʊ//
MeaningWe need to leave or move somewhere.We need to leave.
ExampleWe have to go if we want to catch the train.We must go if we want to catch the bus.
RegisterNeutralNeutral
How commonHigh-frequency chunkTop 2,000 (common)
Collocationshave to go quickly, have to go now, have to go homemust go home, must go now, must go to school, must go out, must go away
Common mistakesLearners sometimes say 'We must go' for urgency, but 'have to' is more common., Confused with 'We should go', which suggests a recommendation instead of a necessity., Omitting 'to' can sound awkward ('We have go').Saying 'We have to go' instead of 'We must go' when urgency is needed., Overusing this phrase; it may seem like you are rushing people., Forgetting the context where it's appropriate to suggest leaving.
Usage notesUsed to indicate the necessity to leave. Appropriate in casual and formal contexts, but may sound abrupt in sensitive situations.Use this phrase to indicate a need to leave a place. It's suitable for most situations but can sound abrupt in very formal contexts.

See it in real clips

We have to go
We must go

Frequently asked questions: We have to go vs We must go

What's the difference between We have to go and We must go?

We have to go: We need to leave or move somewhere. We must go: We need to leave.

Which is more common: We have to go and We must go?

We have to go is the most common in everyday English.

Can you show an example of each?

We have to go: We have to go if we want to catch the train. We must go: We must go if we want to catch the bus.

Can I use We have to go and We must go interchangeably?

Not always. We have to go and We must go are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.