twice per hour

USAGE SUMMARY

The phrase "twice per hour" is grammatically correct and can be used in written English.
It is typically used to describe the frequency of an action or event occurring twice within an hour. Here is an example sentence: "The bus arrives at the bus stop twice per hour, at 15 minutes past and 45 minutes past the hour."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

Probably twice per hour.

The Guardian

South West Trains runs direct services from London Waterloo to Brockenhurst twice per hour.

The Guardian - Travel

Kevin Rushby · Newforest.co.uk South West Trains runs direct services from London Waterloo to Brockenhurst twice per hour.

The Guardian - Travel

The site will have 3-8 hofrs of daily live programming as well as a live newscast called "Market in a Minute" twice per hour during market hours.

TechCrunch

Accommodative relaxation (shifting the focal point from near to far, or vice versa) is an effective strategy for reducing visual fatigue, and should be performed at least twice per hour during prolonged radiology reporting [43].

Insights into Imaging

The Oslo Commuter Rail, operated by the Norwegian State Railways, serves Eidsvoll Verk twice per hour with lines L12 Eidsvoll - Oslo S - Drammen - Kongsberg, and R11 Eidsvoll - Oslo S - Larvik/Skien.

Wikipedia

Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

(Generally speaking, you get what you pay for). Bear in mind, too, that an attorney who charges $200 per hour may take twice as long to do the same thing as an attorney who charges $300 per hour.

Forbes

Bear in mind, too, that an attorney who charges $200 per hour may take twice as long to do the same thing as an attorney who charges $300 per hour.

Forbes

Per hour.

The Guardian - Lifestyle

Sabbagh charges $6 per hour.

Forbes

The process takes approximately 2.5 hours and is done twice per 12-hour shift.

Global Health Action

Expert writing Tips

Best practice

Use "twice per hour" when specifying a frequency or rate, especially in technical or descriptive contexts where precision is important.

Common error

Avoid saying "twice a hour" or "twice hour". The preposition "per" is essential for expressing the rate or frequency within the hour.

Linguistic Context

"Twice per hour" functions as an adverbial phrase, modifying verbs or clauses to specify frequency. It indicates how often an action occurs within a one-hour timeframe. As Ludwig AI explains, the phrase is grammatically correct and used to describe frequency.

Expression frequency: Uncommon

Frequent in

News & Media

30%

Science

30%

Wiki

10%

Less common in

Academia

10%

Formal & Business

10%

Reference

10%

Ludwig's WRAP-UP

The phrase “twice per hour” is a grammatically correct and commonly used adverbial phrase that specifies a frequency of two occurrences within a one-hour period. Ludwig AI confirms its correctness. It finds use across various contexts, from news reports and scientific studies to general descriptions. Alternatives include “every half hour” and “two times an hour”. Remember to use "per" to express frequency correctly, as in “twice per hour,” and avoid saying “twice a hour”. The phrase functions primarily to convey frequency, maintaining a register that's suitable for most forms of writing, though less casual speech.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

two times an hour

A more verbose but equally valid way of expressing the same frequency.

two instances each hour

Similar to "two times an hour", but with a slight shift in emphasis.

at a rate of two per hour

Emphasizes the rate or speed of occurrence.

occurring two instances per hour

A formal and slightly redundant rephrasing.

every half hour

Focuses on the interval between occurrences rather than the count within an hour.

every 30 minutes

Highlights the 30 minutes recurrence

semi-hourly

Uses an adjective to indicate something occurring every half hour, implying two times per hour.

double the hourly frequency

Highlights the doubling of what is normally expected in a single hour

happening every thirty minutes

Breaks down the hour into its constituent minutes, specifying the interval.

repeated bihourly

Employs a less common term to describe an event happening every half hour.

FAQs

How can I use "twice per hour" in a sentence?

Use "twice per hour" to indicate the frequency of an event. For example, "The medication should be taken twice per hour."

What can I say instead of "twice per hour"?

You can use alternatives like "every half hour" or "two times an hour" depending on the context.

Is it grammatically correct to say "two times per hour" instead of "twice per hour"?

Yes, both phrases are grammatically correct, but "twice per hour" is more concise and commonly used.

What's the difference between "twice per hour" and "twice an hour"?

"Twice per hour" is the standard and correct form. "Twice an hour" is less common and may be considered grammatically incorrect by some.