Me too vs So am i

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

Me too

Informal Top 1,000 (very common)

So am i

Top 2,000 (common)

Most formal: So am i Most common: Me too

	Me too	So am i
Pronunciation	🇬🇧 //miː tuː// 🇺🇸 //miː tu//	🇬🇧 //səʊ əm aɪ// 🇺🇸 //soʊ əm aɪ//
Meaning	I feel the same way.	I feel the same way.
Example	I love chocolate! Me too!	I love chocolate ice cream. So am I!
Register	Informal	Neutral
How common	Top 1,000 (very common)	Top 2,000 (common)
Collocations	me too moment, say me too, feel me too, sign me too	agree with someone, feel the same, share the sentiment
Common mistakes	Confused with 'me neither' - 'me too' is for agreement, 'me neither' is for disagreement., Using in inappropriate contexts, like formal speeches., Assuming it's appropriate for all situations - it's generally informal.	Using it in response to negative statements., Confusing it with 'so do I', Omitting the context, making it unclear.
Usage notes	Used primarily in casual conversations to express agreement or shared feelings. Avoid in formal settings.	Used in conversations to agree with someone's statement or feeling. Appropriate in casual and formal contexts, but avoid in written formal documents.

See it in real clips

Sherlock › S1 E1

- So you can kill me too? - I don't want to kill you, Mr Holmes.

Breaking Bad › S1 E3

Me too.

House Of Cards › S1 E1

Me too, me too.

Sherlock › S1 E1

- So you can kill me too? - I don't want to kill you, Mr Holmes.

Breaking Bad › S1 E3

Me too.

Me too

The Lord Of The Rings › The Fellowship Of The Ring

So am I.

Chernobyl › S1 E1

Sitnikov, you're a nuclear engineer, so am I.

The Lord Of The Rings › The Fellowship Of The Ring

So am I.

Chernobyl › S1 E1

Sitnikov, you're a nuclear engineer, so am I.

So am i

Frequently asked questions: Me too vs So am i

What's the difference between Me too and So am i?

Me too: I feel the same way. So am i: I feel the same way.

Which is more formal: Me too and So am i?

So am i is the most formal of these.

Which is more common: Me too and So am i?

Me too is the most common in everyday English.

Can you show an example of each?

Me too: I love chocolate! Me too! So am i: I love chocolate ice cream. So am I!

Can I use Me too and So am i interchangeably?

Not always. Me too and So am i 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.