Is that all vs Is that it

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

Is that all

Top 2,000 (common)

Is that it

Informal Beyond 10,000 (less common)

Most formal: Is that all Most common: Is that all

	Is that all	Is that it
Pronunciation	🇬🇧 //ɪz ðæt ɔːl// 🇺🇸 //ɪz ðæt ɔl//	🇬🇧 //ɪz ðæt ɪt// 🇺🇸 //ɪz ðæt ɪt//
Meaning	Are you finished? Is there more?	A phrase that asks if something is complete or if there is more.
Example	After the presentation, I asked, 'Is that all?' to ensure we covered everything.	After waiting for an hour, I finally asked, 'Is that it?'
Register	Neutral	Informal
How common	Top 2,000 (common)	Beyond 10,000 (less common)
Collocations	finish up, check details, ask for more, seek confirmation, confirm completion	is that really it, is that all there is, is that it for now
Common mistakes	Using it in formal situations where a more elaborate question is preferred., Confusing with 'Is that everything?' which can sound more demanding., Omitting it when asking for details, making the inquiry unclear.	Using in formal situations where a more polite phrase is better., Confusing with 'Is that all?' which may imply more disappointment., Not using appropriate intonation to express the right emotion.
Usage notes	Use in casual conversation, often when seeking confirmation. Suitable in most informal contexts, but might need rephrasing in formal settings.	Commonly used in casual conversations to check if something is finished or to express disappointment. Avoid in formal contexts.

See it in real clips

Sherlock › S1 E1

Is that it?

Is that it

Frequently asked questions: Is that all vs Is that it

What's the difference between Is that all and Is that it?

Is that all: Are you finished? Is there more? Is that it: A phrase that asks if something is complete or if there is more.

Which is more formal: Is that all and Is that it?

Is that all is the most formal of these.

Which is more common: Is that all and Is that it?

Is that all is the most common in everyday English.

Can you show an example of each?

Is that all: After the presentation, I asked, 'Is that all?' to ensure we covered everything. Is that it: After waiting for an hour, I finally asked, 'Is that it?'

Can I use Is that all and Is that it interchangeably?

Not always. Is that all and Is that it 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.