Should you write an hour or a hour? The correct standard phrase is an hour because the h in hour is silent. The word begins with a vowel sound, similar to the beginning of our.
English chooses between a and an according to the next sound, not simply the next written letter. Use a before a consonant sound and an before a vowel sound. Therefore, the fact that hour begins with the consonant letter h does not control the choice.
For example, you should write “The meeting lasted an hour” and “I arrived an hour ago.” The form a hour is incorrect in standard American English.
This sound-based rule also explains expressions such as an honest answer, an honor, a house, and a one-hour meeting.
Quick Answer
An hour is correct. A hour is incorrect in standard English.
The h in hour is silent, so the word begins with the vowel sound heard in our. Use an before that sound:
- We waited for an hour.
- She arrived an hour ago.
- The class lasts an hour.
Is It Correct to Say an Hour or a Hour?
The correct phrase is an hour. Although hour begins with the letter H, the H is silent, so the word starts with a vowel sound. Use an before words that begin with a vowel sound.
Examples:
- It took an hour to finish.
- We waited for an hour.
Is It a Hotel or an Hotel?
In modern English, a hotel is the standard form because hotel begins with a pronounced H sound. An hotel is an older or less common usage that may appear in some varieties of English.
Examples:
- We stayed at a hotel near the airport.
- She booked a hotel for the weekend.
Is It an Hour or Hour?
The correct expression is an hour. You need the article an before hour because it starts with a vowel sound.
Examples:
- The meeting lasted an hour.
- It took an hour to get there.
Should I Write an Hour or an Hour?
You should write an hour. The article an is correct because hour is pronounced with a silent H.
Examples:
- I waited an hour for the bus.
- The class lasted an hour.
Why People Confuse Them
People often learn an incomplete rule:
- Use a before a consonant.
- Use an before a vowel.
That rule seems to suggest a hour because hour begins with the consonant letter h. However, English bases the choice on pronunciation rather than spelling.
The more accurate rule is:
- Use a before a consonant sound.
- Use an before a vowel sound.
The h in hour is not pronounced. As a result, the first sound comes from the letters ou, producing a vowel sound.
Compare:
- an hour , silent h
- a house , pronounced h
- an honor , silent h
- a hotel , pronounced h
Looking only at the first letter can lead to the wrong answer. Listening to the first sound gives you the correct article.
Key Differences At A Glance
| Feature | An Hour | A Hour |
|---|---|---|
| Standard English | Correct | Incorrect |
| Article | An | A |
| First sound in hour | Vowel sound | Vowel sound |
| Is the h pronounced? | No | No |
| Natural in American English | Yes | No |
| Example | We waited an hour. | We waited a hour. |
Meaning And Usage Difference
Why An Hour Is Correct
The word hour is pronounced approximately OW-er. Its initial h remains silent in standard American English.
Because the first spoken sound is a vowel sound, an must come before it:
- an hour
- an hourly wage
- an hour-long meeting
- an hour and a half
The same rule applies when another word comes directly before hour but does not change its starting sound:
- It took approximately an hour.
- We need another hour.
- She waited almost an hour.
Why A Hour Is Incorrect
The indefinite article a belongs before a consonant sound:
- a house
- a horse
- a hospital
- a hotel
- a hundred dollars
Since hour does not begin with a pronounced consonant, a hour creates an unnatural break between two vowel sounds and violates the standard article rule.
Incorrect:
- I will call you in a hour.
- The trip takes a hour.
- We waited for a hour.
Correct:
- I will call you in an hour.
- The trip takes an hour.
- We waited for an hour.
The Rule Depends On Sound, Not Spelling
The first written letter does not always reveal the first sound.
Some words begin with a consonant letter but a vowel sound:
- an hour
- an honor
- an honest person
- an heir
Other words begin with a vowel letter but a consonant sound:
- a university
- a uniform
- a European country
- a one-time fee
University begins with the consonant sound y, as in you. One begins with the consonant sound w. Therefore, both take a.
The sound rule handles all these cases consistently.
Pronunciation
Hour is pronounced OW-er in standard American English. It commonly sounds the same as our.
The pronunciation does not include an initial h sound:
- Correct: an OW-er
- Incorrect: a HOW-er
The plural hours is pronounced approximately OW-erz:
- The repair took two hours.
- We worked for several hours.
Because plural nouns do not normally take a or an, the choice applies only when hour functions as a singular countable noun:
- an hour
- one hour
- each hour
- every hour
A And An Before H Words
Not every word beginning with h takes an. The correct article depends on whether you pronounce the h.
Use an when the h is silent:
- an hour
- an honest answer
- an honorable person
- an honor
- an heir
- an hourly employee
Use a when the h is pronounced:
- a house
- a horse
- a hospital
- a hotel
- a holiday
- a historic event
- a helpful suggestion
- a happy child
In standard modern American English, most speakers pronounce the h in historic. Therefore, a historic event is the usual choice. Some speakers and publications use an historic, but that form reflects a pronunciation or style in which the initial h receives less emphasis.
No such uncertainty normally affects hour. Standard speakers leave its h silent, making an hour the clear choice.
Tone, Context, And Formality
An hour works in every level of American English, including:
- casual conversation
- text messages
- business emails
- school assignments
- academic writing
- news reports
- schedules
- workplace instructions
Examples:
- I’ll be there in an hour.
- The webinar lasts an hour.
- Please submit your response within an hour.
- Participants completed an hour of training.
- The delay continued for more than an hour.
A hour is not an informal alternative. It remains incorrect even in relaxed conversation or social media writing.
In fast speech, an hour may sound like uh-now-er because the words connect smoothly. However, the written form remains two words:
an hour
Which Form Should You Use?
| Context | Best Choice | Why |
|---|---|---|
| A period of 60 minutes | An hour | Hour begins with a vowel sound |
| Something happened 60 minutes earlier | An hour ago | This is the standard expression |
| A waiting period | An hour | The silent h requires an |
| A rate based on each hour | An hourly rate | Hourly also has a silent h |
| A meeting lasting 60 minutes | An hour-long meeting | Hour follows an directly |
| A meeting described with a compound modifier | A one-hour meeting | One begins with a w sound |
| A period lasting half an hour | A half-hour period | Half begins with a pronounced h |
| An eight-hour shift | An eight-hour shift | Eight begins with a vowel sound |
An Hour And One Hour
Both an hour and one hour are correct, but they create slightly different emphasis.
Use an hour when mentioning the length of time generally:
- The appointment lasted an hour.
- I need an hour to finish.
- We waited for an hour.
Use one hour when emphasizing the exact number:
- You have exactly one hour to complete the test.
- The battery charged in only one hour.
- One hour remains before the store closes.
The meanings often overlap. However, one hour stresses the number more clearly.
Compare:
- I waited an hour.
This gives the duration. - I waited one full hour.
This emphasizes how long the wait felt.
A One-Hour Meeting Or An One-Hour Meeting?
Use a one-hour meeting, not an one-hour meeting.
Although one begins with the vowel letter o, its first sound is w, a consonant sound:
- a one-hour meeting
- a one-hour drive
- a one-hour delay
- a one-hour lesson
Compare the two correct structures:
- The meeting lasted an hour.
- It was a one-hour meeting.
In the first sentence, the article comes directly before hour. In the second, it comes before one, so the pronunciation of one controls the choice.
An Hour-Long Or A Hour-Long?
Use an hour-long before a noun:
- an hour-long meeting
- an hour-long interview
- an hour-long delay
- an hour-long workout
The article comes directly before hour, which begins with a vowel sound.
However, when one-hour comes first, use a:
- a one-hour meeting
- a one-hour interview
- a one-hour delay
Both forms describe the same length:
- We attended an hour-long class.
- We attended a one-hour class.
An 8-Hour Shift Or A 8-Hour Shift?
Use an 8-hour shift because readers pronounce 8 as eight, which begins with a vowel sound.
Correct:
- an 8-hour shift
- an 11-hour flight
- an 18-hour delay
Use a when the number begins with a consonant sound:
- a 2-hour meeting
- a 4-hour drive
- a 12-hour shift
The article depends on how you pronounce the number:
- 8 = eight → an
- 11 = eleven → an
- 1 = one → a
- 2 = two → a
When One Choice Sounds Wrong
Using a before hour makes a sentence sound unnatural to fluent English speakers.
Incorrect:
- The movie lasts a hour.
Correct:
- The movie lasts an hour.
Incorrect:
- I arrived a hour early.
Correct:
- I arrived an hour early.
Incorrect:
- She earns twenty dollars a hour.
Correct:
- She earns twenty dollars an hour.
Incorrect:
- The doctor will see you in a hour.
Correct:
- The doctor will see you in an hour.
The expression per hour can sometimes replace an hour in rates:
- She earns twenty dollars an hour.
- She earns twenty dollars per hour.
Both are correct, although per hour may sound more technical or formal.
Common Mistakes And Quick Fixes
Mistake 1: Choosing The Article By Letter
Incorrect reasoning:
- Hour starts with h, so use a.
Correct reasoning:
- The h is silent, so hour starts with a vowel sound and takes an.
Mistake 2: Writing A Hour Ago
Incorrect:
- He called me a hour ago.
Correct:
- He called me an hour ago.
The established expression is an hour ago.
Mistake 3: Writing A Hour And A Half
Incorrect:
- The trip took a hour and a half.
Correct:
- The trip took an hour and a half.
The article still depends on the first sound of hour.
Mistake 4: Writing An One-Hour Meeting
Incorrect:
- We scheduled an one-hour meeting.
Correct:
- We scheduled a one-hour meeting.
The word immediately following the article is one, which begins with a w sound.
Mistake 5: Writing A Hourly Rate
Incorrect:
- The job offers a hourly rate.
Correct:
- The job offers an hourly rate.
The h in hourly is silent, just as it is in hour.
Mistake 6: Using An Before Every H Word
Incorrect:
- an house
- an hotel
- an happy person
Correct:
- a house
- a hotel
- a happy person
These words begin with a pronounced h, so they require a.
Mistake 7: Adding A Hyphen To An Hour
Do not hyphenate the ordinary noun phrase:
- The meeting lasted an hour.
Use hyphens when the words form a compound modifier before a noun:
- an hour-long meeting
- a one-hour meeting
Everyday Examples
Examples With An Hour
The lesson lasts an hour.
I waited for an hour.
She arrived an hour early.
We should leave in an hour.
The repair took less than an hour.
He exercises for an hour every morning.
The doctor will call you within an hour.
Dinner should be ready in about an hour.
The meeting continued for more than an hour.
I need an hour to complete the report.
Examples With An Hour Ago
She left an hour ago.
The package arrived an hour ago.
We spoke on the phone an hour ago.
The storm ended about an hour ago.
I finished the assignment an hour ago.
Examples With An Hour And A Half
The flight lasted an hour and a half.
We waited an hour and a half for a table.
The workshop takes an hour and a half.
She drives an hour and a half to work.
The movie runs for nearly an hour and a half.
Examples With Hourly
The company pays an hourly wage.
We received an hourly weather update.
She works as an hourly employee.
The system performs an hourly backup.
Ask about the consultant’s hourly rate.
Examples With Compound Modifiers
- We attended an hour-long presentation.
- The team completed a one-hour training session.
- He took a half-hour lunch break.
- She worked an eight-hour shift.
- The storm caused a two-hour delay.
- We booked a one-hour appointment.
- The class includes an hour-long exam.
Dictionary-Style Word Details
Verb
An hour: Not a verb. It is a noun phrase containing the indefinite article an and the singular noun hour.
A hour: Not a standard grammatical phrase.
The verb hour exists only in rare specialized uses and does not affect the choice between these phrases.
Noun
Hour: A unit of time equal to 60 minutes. It can also refer to a particular period or time of day.
Examples:
- The task took an hour.
- The store remains open at this hour.
An hour means one nonspecific period of 60 minutes:
- Give me an hour to respond.
Determiner
An is an indefinite article used before a singular countable noun that begins with a vowel sound:
- an hour
- an apple
- an honest answer
A is an indefinite article used before a singular countable noun that begins with a consonant sound:
- a minute
- a day
- a hotel
Synonyms
Closest alternatives for an hour include:
- 60 minutes
- one hour
- a 60-minute period
These forms may require different sentence structures:
- The meeting lasted an hour.
- The meeting lasted 60 minutes.
- It was a 60-minute meeting.
There is no meaningful synonym for a hour because the phrase is grammatically incorrect.
Example Sentences
An hour:
- The train should arrive in an hour.
- The interview lasted almost an hour.
- We spent an hour reviewing the contract.
- She charges fifty dollars an hour.
- An hour should give us enough time.
A hour:
- A hour is incorrect in standard English.
- Replace a hour with an hour.
Word History
English developed a and an as two forms of the indefinite article. The form an appears before vowel sounds because it creates a smoother transition in speech.
The spelling of hour retains an initial h, but standard English does not pronounce it. Therefore, speakers use an before the word.
The phrase follows pronunciation rather than written appearance.
Phrases Containing
Common expressions with an hour include:
- an hour ago
- in an hour
- for an hour
- within an hour
- about an hour
- almost an hour
- less than an hour
- more than an hour
- an hour or two
- an hour and a half
- an hour a day
- once an hour
- miles per hour
- dollars an hour
- an hourly rate
- an hour-long meeting
How To Remember An Hour vs A Hour
Say the word aloud:
hour → OW-er
You do not hear an h at the beginning. Because the first sound is a vowel, use an.
A simple memory sentence is:
An hour sounds like an our.
Although hour and our have different meanings, they commonly share the same pronunciation:
- an hour
- our appointment
You can also remember:
If the h hides, use an.
This works for:
- an hour
- an honest person
- an honor
- an heir
FAQs
Is it an hour or a hour?
An hour is correct. The h in hour is silent, so the word begins with a vowel sound and requires an.
Why do we say an hour if h is a consonant?
The choice between a and an depends on pronunciation, not the written letter. Since hour begins with the vowel sound ow, it takes an.
Is it a half hour or an half hour?
Use a half hour because half begins with a pronounced h. You can also write half an hour:
- We waited a half hour.
- We waited half an hour.
Is it a one-hour meeting or an one-hour meeting?
Use a one-hour meeting. The word one begins with a w sound, so it takes a.
Is it an hourly rate or a hourly rate?
Use an hourly rate because the h in hourly is silent.
Is it an hour-long meeting or a hour-long meeting?
Use an hour-long meeting. The word hour comes directly after the article and begins with a vowel sound.
Should I write an 8-hour shift or a 8-hour shift?
Write an 8-hour shift because 8 is read as eight, which begins with a vowel sound.
Conclusion
An hour is the correct phrase in standard American English. A hour is incorrect because the h in hour is silent, leaving a vowel sound at the beginning.
Remember that the choice between a and an depends on sound:
- an hour
- an hourly rate
- an hour-long meeting
- a one-hour meeting
- a half-hour break
The simplest test is to pronounce the next word. If it starts with a vowel sound, use an. Since hour sounds like OW-er, always write an hour.
