increase of vs increase by

Both 'increase of' and 'increase by' are correct, but they are used in different contexts. 'Increase of' is used when talking about the amount or percentage of the increase itself, while 'increase by' is used when specifying the amount or percentage by which something has increased.

Last updated: April 06, 2024 • 292 views

This phrase is correct and commonly used in English.

"increase of"

This phrase is used to refer to the amount or percentage of the increase itself. For example, 'There was an increase of 20% in sales last month.'

Examples:

The increase of prices has affected consumers' purchasing power.
There was an increase of 50 points in the stock market index.
The increase of traffic congestion in the city is a major concern.
An increase of 10 degrees in temperature is expected tomorrow.
The increase of students in the school led to the need for more teachers.

Show examples from the web [+]

That's an increase of 69%.
Finally a further increase of 0.5% will be added on games with 18-21 points.
Cyclophosphamide increases toxicity due to increase of thymidine activity.
Consequences could include an increase of cost and emissions.
An increase of criminality is observed everywhere.
The increase of knowledge and liberty brings discontent.
Nonetheless, we're ticking off an increase of almost 0.5 percent.
A major effect in production activity, increase of the country's economy...
We're looking at an increase of so-called unusual malfunctions.
This increase of 3.8 magnitudes is equivalent to a decrease in brightness by a factor 32.5.
These incidents have been linked to the recent and dramatic increase of a naturally occurring toxin produced by algae.
The shipments eastbound from the Europe North to Asia and Indian subcontinent will endure an increase of 150 dollars/teu.
An increase of 2º F can make seafood salads unsafe within two to four hours.
In March 2006 Morales announced the increase of the minimum wage by 50%.
In this regard, sales registered an increase of about 30%.
New orders in increase of 2%.
Compared to 2012 there was an increase of 39%.
This may lead to reduction of ketoconazole effectiveness or increase of digoxin toxicity, respectively.
An increase of 20% no loss of seniority, a commitment against discrimination based on physical appearance.
The effect: a temperature increase of up to 10 degrees.

Alternatives:

rise in
growth of
surge in
escalation of
expansion of

This phrase is correct and commonly used in English.

"increase by"

This phrase is used to specify the amount or percentage by which something has increased. For example, 'The company's revenue increased by 15% last year.'

Examples:

The price of oil increased by $10 per barrel.
The population of the city increased by 20% in the last decade.
She increased her savings by $500 this month.
The company's profits increased by 50% compared to last quarter.
The number of employees increased by 10% after the merger.

Show examples from the web [+]

Okay, my students saw their SAT scores increase by more points, on average, than Austin's.
Prices can increase by more than 30%.
The European Council decided to increase by 20% the energy efficiency by 2020.
The number of pension recipients alone is set to increase by 5.5%.
Italy remains the principal market, posting an increase by 12.3%.
By 2006, the federal prison population is expected to increase by 50%.
One hopes that sales will increase by 10%.
Analysts polled by Reuters expected cloud subscriptions to increase by 33 percent.
Then for 4-7 points the rake will increase by extra 0.5%.
For marbles other than those illustrated the cost will increase by 20%.
Payments also increase by 16,6 %, to EUR 720 million.
Payments also increase by 35.4 % to EUR 9538.7 million.
The Community's cultivable land will increase by 55 % with accession.
Over the period from 2003 to 2007, that figure is expected to increase by between 20000 and 40000.
340,000 were studying abroad in 2011 which was an increase by 20% over the previous year.
The net monthly salary was foreseen to increase by €80, through a tax credit from the month of May 2014.
Investment will increase by 5% year-on-year in
The city itself will change face: estimates predict that its population, now comprised of 100,000 inhabitants, will increase by 10 times by 2050.
Over the next 20 years, perhaps it will increase by another 40 percent or so.
In fact, during World Cup matches, incidents of domestic violence increase by 25%.

Alternatives:

grew by
rose by
jumped by
climbed by
expanded by

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increase of vs increase by

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