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
an increase by
Grammar usage guide and real-world examplesUSAGE SUMMARY
'an increase by' is correct and usable in written English.
You can use it when you want to express that something has increased or grown by a certain amount. For example, "Taxes saw an increase by 10% this year."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
60 human-written examples
A. It's an increase, by about 20 to 25 percent.
News & Media
The increase in change in leadership is not 3.1% but an increase by 3.1 percentage points.
That's an increase by more than half in one year — reversing a trend of continuous decline.
News & Media
Compared to the conventional process, this is an increase by a factor of 10.
Science
They have doubled in number every decade for four decades — an increase by a factor of 16.
News & Media
The "Europe 2020 strategy" quantitative targets account an increase by 20% of the energy efficiency by the end of 2020.
Science
Fuel economy standards have not been raised significantly since the 1980's, and the auto industry has been lobbying heavily against an increase by Congress.
News & Media
After eight years of near-zero rates, an increase by the Federal Reserve should not have much effect on consumers, at least for now.
News & Media
Without an increase by early July, the government cannot continue to make payments on its existing debt, potentially forcing it into an economy-shaking default.
News & Media
So, we need to have an increase by 50% of the supply of food.
News & Media
The retention coefficient values (R%) showed an increase by increasing the concentration of the NaCl solution.
Expert writing Tips
Best practice
When specifying the amount of increase, be clear about the units. For example, use "an increase by 10%" instead of just "an increase by 10".
Common error
Avoid confusing percentage increase with percentage point increase. "An increase by 5 percentage points" means the rate increased by 5 out of 100, while "an increase by 5%" means the rate increased by 5% of its original value.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an increase by" functions as a noun phrase that quantifies the extent of growth or augmentation. It is used to specify the amount or degree to which something has increased, as shown by Ludwig examples.
Frequent in
Science
48%
News & Media
36%
Formal & Business
16%
Less common in
Wiki
2%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "an increase by" is a grammatically sound and frequently used expression to indicate the amount of growth or augmentation. Ludwig AI confirms its correctness and common usage. Its prevalence across diverse sources like Science, News & Media, and Formal & Business contexts underscores its versatility. Remember to specify the units and distinguish between percentage increase and percentage point increase. As Ludwig exemplifies, this phrase effectively conveys precise details about the magnitude of change.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a growth of
Focuses more directly on the overall growth rather than the specific amount of increase.
a rise of
Similar to "growth", but implies an upward trend or movement.
an expansion of
Suggests a broadening or enlargement in scope or size.
an augmentation of
Implies an addition that enhances or improves something.
a jump in
Indicates a sudden and significant increase.
an uptick in
Suggests a small or modest increase, often after a period of decline.
a surge in
Implies a strong and sudden increase, often temporary.
escalation of
Indicates a gradual but steady increase in intensity or amount.
a climb in
Suggests a gradual and steady upward movement or increase.
improved by
Focuses on the improvement resulting from the increase, rather than the increase itself.
FAQs
How do I use "an increase by" in a sentence?
Use "an increase by" to describe the extent to which something has grown. For example, "The company reported "a rise in" profits by 20%".
What's a good alternative to "an increase by"?
Depending on the context, you could use alternatives like "a growth of", "a rise of", or "improved by".
Is it correct to say "an increase of" instead of "an increase by"?
While "an increase of" is grammatically correct and often used, "an increase by" is more precise when specifying the amount of the increase. The two aren't always interchangeable.
How does "escalation of" differ from "an increase by"?
"An increase by" simply indicates a growth in quantity or value. "Escalation of" often implies a more gradual, but potentially concerning, increase, particularly in negative contexts like conflict or costs.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested