To vs. Too vs. Two

Overview

To, too, and two are pronounced identically in standard speech, which means the ear provides no help when writing. The choice depends entirely on what role the word plays in the sentence.

Two is the number 2. To is a preposition or infinitive marker. Too is an adverb meaning also or excessively. Keeping those three roles distinct resolves every case of confusion.

Two

Two is the written form of the number 2. It works as a numeral adjective when it modifies a noun, and it can stand alone when the thing being counted is understood from context.

Whenever the word refers to a quantity equal to 2, the correct spelling is two.

To

To serves two main grammatical roles: as a preposition indicating direction, destination, or relationship, and as the marker of the infinitive form of a verb.

To as a Preposition

To as Part of the Infinitive

When to appears immediately before the base form of a verb, it forms the infinitive. This construction can function as a noun, adjective, or adverb depending on its role in the sentence.

If the word following to is a verb in its base form, the correct spelling is to, not too.

Too

Too is an adverb with two distinct meanings.

Too Meaning Also or As Well

Too adds the idea that something applies in addition to what has already been stated. It usually appears at the end of a clause or sentence.

Too Meaning Excessively or More Than Enough

Too intensifies an adjective or adverb and signals that something exceeds an acceptable or desirable level. This use differs from very, which intensifies without implying a problem.

Very hot describes an extreme temperature. Too hot implies the temperature prevents or complicates something. The word too in this sense almost always pairs with a consequence.

All Three Compared

Common Mistakes

Practice Exercises

Exercise 1: Choose the Correct Word

Choose to, too, or two to complete each sentence.

1. The journey takes _______ hours by bus.
2. She was _______ nervous to speak in front of the crowd.
3. They decided _______ postpone the launch.
4. He finished his work early, and she finished early _______.
5. There are _______ possible answers to this question.
6. The deadline was _______ soon for the team to prepare properly.
7. Please send the report _______ the director by Friday.
8. Both of the _______ proposals were rejected.

Exercise 2: Identify the Error

Each sentence contains one error. Rewrite the sentence correctly.

1. She was to tired to continue after the long shift.
2. The manager reviewed the file and asked his assistant too.
3. There are two options: accept the offer or apply too another company.
4. He moved too Paris after finishing his degree.
5. The package was to heavy for one person to carry.

Exercise 3: Fill in the Blank

Complete each sentence with to, too, or two. Some sentences have more than one blank.

1. The _______ delegates flew _______ Geneva for the summit.
2. She was _______ exhausted _______ finish the report.
3. He wanted _______ attend, and his colleague did _______.
4. _______ of the applicants were _______ inexperienced for the role.
5. They agreed _______ meet at _______ o'clock.

Summary

When choosing between the three, check function first. Two replaces with the numeral 2. Too replaces with also or signals excess before an adjective. To introduces a destination or a base verb.