Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
1 hour duration
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase '1 hour duration' is correct and usable in written English.
You can use it when referring to the length of something, such as a meeting or performance. For example: "The meeting will have a 1 hour duration."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(20)
one-hour period
sixty-minute timeframe
an hour long
lasting one hour
period of one hour
within an hour
during that hour
1 hour period
1 h duration
1 time duration
1 week duration
1 hr duration
1 hour period of
1 hour time frame
1 hours duration
1 hour time period
an hour duration
one hour duration
hour long duration
1 hour carried
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
10 human-written examples
Biofeedback sessions were of 1 hour duration and repeated at 1 month.
Spontaneous locomotor activity was assessed in 1 hour duration trials using automated activity chambers (VersaMax Animal Activity Monitoring System, Columbus, OH), which consisted of a 41×41×31 cm3 plexiglass box with a grid of infrared beams mounted horizontally every 2.5 cm and vertically every 4.5 cm.
Science
Participants will complete a baseline interview with the project officer (up to 1 hour duration).
Science
The EX+ROOM and EX group will exercise on the same weekdays, twice a week for 1 hour duration.
Science
Three laboratory sessions (s0, s1 and s2) of 1 hour duration were carried with one week intervals.
Science
The entire session was of 1 hour duration where each student presented and interacted with the large group.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
Idiopathic hypersomnia with long sleep time was characterized by a complaint of constant EDS (ESS >12) and non refreshing naps irrespective of their duration (>1 hour duration), an uninterrupted and prolonged night-time sleep (>10 hours), sleep inertia and sleep efficiency on the polysomnography above 90%.
Science
They were habituated to these conditions for a week before EEG/EMG signals were recorded over 24 hour duration.
Science
They described a brief period of (1/2)–1 hour duration, during which the worker is taken out of service by his or her supervisor.
The programme consists of 2 sessions of 4 hour duration each and 1 session of 2 hour duration.
Science
Small group format of ≤ 3 hour duration was favoured by the participants.
Science
Expert writing Tips
Best practice
When describing the length of a session or event, use "1 hour duration" to clearly communicate the time involved. For instance, "The workshop will have a "1 hour duration" to allow participants sufficient time for hands-on activities."
Common error
Avoid using "period" or "timeframe" as direct replacements for "duration" unless the context truly emphasizes a specific segment of time or a general timeframe. While related, "duration" specifically refers to the length of time an event lasts, whereas "period" or "timeframe" can refer to any defined segment of time.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "1 hour duration" functions as a noun phrase, specifying the length of time something lasts. Ludwig AI confirms its correctness, and examples show its utility in academic, scientific, and general contexts.
Frequent in
Science
60%
News & Media
25%
Formal & Business
15%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "1 hour duration" is a grammatically sound and commonly used phrase for specifying the length of something, according to Ludwig. It functions as a noun phrase, primarily serving to quantify time across various contexts, especially in science and news media. While versatile, it's important to differentiate its specific meaning of time length from related terms like "period" or "timeframe", which can sometimes refer to a broader segment of time. Remember to use "1 hour duration" (singular) instead of "1 hours duration" (plural), which is incorrect. Overall, the phrase maintains a neutral register and offers clarity in a wide range of writing scenarios.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
one-hour period
Replaces "duration" with "period", slightly altering the focus from the length to a specific segment of time.
sixty-minute timeframe
Uses more precise language by specifying "sixty-minute" and "timeframe" instead of "duration", adding clarity.
an hour long
Simplifies the phrase to emphasize length, replacing "duration" with a more common adjective form.
lasting one hour
Focuses on the continuation of an event or activity, changing the phrase to a verb-centered structure.
period of one hour
Inverts the structure to put emphasis on "period" as the primary element.
60 minutes in length
Provides a numerical value for the length, focusing on precision rather than a general time span.
within an hour
Shifts the meaning to indicate something happening inside the "1 hour duration" instead of the length itself.
for the hour
Specifies an action or event occurring during the given hour, changing the construction and meaning slightly.
hourly timeframe
Focuses on something happening every hour rather than specifying "1 hour duration"
during that hour
Emphasizes a specific hour where something occurs, rather than the measurement of time.
FAQs
How can I use "1 hour duration" in a sentence?
You can use "1 hour duration" to specify the length of an event or activity. For example, "The meeting will have a "1 hour duration" to ensure all agenda items are covered efficiently."
What can I say instead of "1 hour duration"?
You can use alternatives like "one-hour period", "sixty-minute timeframe", or "an hour long" depending on the context.
Is it correct to say "1 hours duration"?
No, it is grammatically incorrect. The correct phrase is "1 hour duration". The term "hour" remains singular when referring to a single hour.
What's the difference between "1 hour duration" and "lasting one hour"?
"1 hour duration" is a noun phrase that describes the length of something. "Lasting one hour" is a participial phrase that emphasizes the continuous nature of an event for that period. The best choice depends on whether you want to focus on the length or the ongoing nature of the event.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested