During vs. For – Which is Correct?

Both “during” and “for” are correct, but they express different time ideas. Use “during” for something happening within a particular period or event, and use “for” to show the length of time. For example, “during the meeting” identifies when; “for two hours” identifies duration. Choose based on meaning, not spelling.

During or For – Which is Correct?

During and for are both correct English prepositions, but they are not interchangeable. Use during to identify the period or event when something happens. Use for to identify how long something continues.

Use during before a noun referring to a period, event, or activity: “during the summer,” “during the concert,” or “during the discussion.” Use for before a length of time: “for three days,” “for ten minutes,” or “for several years.”

The Best Trick to Remember the Difference

Ask yourself whether you are naming a time window or measuring a length of time. If you are saying when something happened, choose during. If you are saying how long it happened, choose for.

A useful swap test is this: if you can replace the phrase with “within” or “in the course of,” use during. If you can replace it with “for the length of,” use for.

Word	Part of Speech	Meaning	Example
during	Preposition	At some point within a period or event	She took notes during the lecture.
for	Preposition	Over a specified length of time	She studied for two hours.

How to Use During

During introduces a period, event, or activity in which something takes place. It answers the question when? rather than how long? The noun after during usually names a recognizable time period or occasion, such as “the afternoon,” “the ceremony,” “the winter,” or “the interview.”

During is common in casual, academic, professional, and formal writing. It can refer to a brief event or a long period, but it does not normally state the exact duration of an action.

Example 1: The lights went out during the performance.

Example 2: Many people travel during the holiday season.

Example 3: Please keep your phone silent during the examination.

Common Uses of During

• During an event: The speaker answered questions during the presentation.
• During a period: Prices increased during the summer.
• During an activity: He listened to music during his commute.
• During a historical era: The city expanded rapidly during the industrial revolution.

During Versus While

During is followed by a noun phrase, while while is usually followed by a clause containing a subject and verb. Compare “during the meeting” with “while the meeting was taking place.” The meanings are similar, but their grammatical structures differ.

How to Use For

For introduces a period that measures the length of an action or situation. It answers the question how long? Common expressions include “for five minutes,” “for a week,” “for several months,” and “for a long time.”

For is used with both completed and continuing actions. With perfect or continuous verb forms, it often describes an action that began in the past and continues to the present or continued until another past point.

Example 1: We waited for thirty minutes.

Example 2: She has lived in Chicago for six years.

Example 3: They talked for most of the evening.

Common Uses of For

• Exact duration: The machine ran for ten hours.
• Approximate duration: He stayed there for a long time.
• Duration with perfect tenses: I have worked here for three years.
• Planned duration: The conference will last for two days.

For Versus Since

For identifies a length of time, while since identifies the starting point of an action or situation. Say “I have been waiting for an hour” when naming the duration, but “I have been waiting since noon” when naming the starting time.

During or For in the Same Sentence

Sometimes both words can appear in one sentence because they provide different information. During identifies the time window, while for measures the duration within that window.

• She slept during the flight for three hours.
• He worked during the afternoon for approximately four hours.
• We stayed indoors during the storm for most of the day.

In these examples, the phrase with during answers when?, and the phrase with for answers how long?

Related Concepts

Understanding time expressions and prepositions makes the difference between during and for easier to recognize.

• Prepositions of time: Words such as during, for, since, until, and by connect actions with points, periods, or lengths of time.
• Time period: A time period is a window or occasion, such as “the meeting,” “the night,” or “the summer.” The preposition during commonly introduces it.
• Duration: Duration is the amount of time something lasts, such as “two hours” or “several weeks.” The preposition for commonly introduces it.
• Since: Since marks the beginning of a continuing situation, as in “since Monday” or “since 2020,” rather than its length.

Examples from Media and Literature

The distinction appears regularly in news reporting, fiction, film dialogue, and everyday descriptions of events.

• News reporting: A report may state that “several roads were closed during the storm,” identifying the event in which the closures occurred.
• Historical writing: A biography might explain that a leader served “for twelve years,” emphasizing the length of the service.
• Film dialogue: A character may say, “I fell asleep during the movie,” identifying when the action happened.
• Travel writing: A travel article might say, “The family stayed in Rome for a week,” giving the length of the visit.
• Fiction: A novel may describe silence “during the conversation” or say that a character waited “for several hours.”

Practice Exercises

Choose the correct word to complete each sentence.

1. The audience remained quiet ______ the speech.
2. We waited ______ nearly an hour.
3. She learned to swim ______ the summer.
4. They have been married ______ twenty-five years.
5. He received several messages ______ the flight.

Answer Key

1. during — “the speech” names an event or time window.
2. for — “nearly an hour” gives a duration.
3. during — “the summer” names a period.
4. for — “twenty-five years” gives a length of time.
5. during — “the flight” names the event in which the messages were received.

During Synonyms

Synonym	Definition
In	At some point within a stated period or event; often more conversational.
Throughout	From the beginning to the end of a period or across its entire extent.
Amid	In the middle of or surrounded by an event, condition, or situation.

For Synonyms

Synonym	Definition
For the duration of	Throughout the entire stated length of time.
Over	Across or throughout a specified period; often used with longer spans of time.
During the course of	At some time within the progress or duration of an activity or period.

Frequently Asked Questions

Question 1: Is it correct to say “during two hours”?
Usually, no. Use for two hours when you mean that something lasted two hours. Use during with an event or period, such as “during the two-hour meeting.”

Question 2: Is “for the meeting” grammatically correct?
It can be correct, but it has a different meaning from “during the meeting.” “During the meeting” means at some point while the meeting was happening. “For the meeting” usually means intended for or related to the meeting, as in “I prepared an agenda for the meeting.”

Question 3: Can “during” and “for” be used with the present perfect?
Yes. Use for to state duration: “I have lived here for five years.” Use during to identify a period in which something occurred: “I learned a great deal during my first year here.”

Question 4: What is the difference between “during the night” and “for the night”?
“During the night” means at some point within the nighttime period. “For the night” usually describes an arrangement lasting overnight, as in “We booked a room for the night.”

Conclusion

During and for are both correct, but during identifies when something happens within a period or event, while for measures how long it lasts. Remember the simple question: when? means during; how long? means for. Pro Tip: Choosing precise time prepositions strengthens your writing and protects your professional reputation.