a rough estimate

USAGE SUMMARY

The phrase "a rough estimate" is correct and usable in written English.
You can use it when you are referring to an informal or inexact calculation or estimation. For example: Based on the information I have, I can provide you with a rough estimate of the cost of the project.

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It was, at best, a rough estimate.

The New York Times

(This is a rough estimate, and your mileage may vary).

The New York Times

3) A rough estimate of when you would like to present.

Columbia University

The pileup_map tool computes a rough estimate of the amount of pileup.

Harvard University

A rough estimate indicates that we Californians use about 16 billion gallons of gasoline per year.

University of California, Berkeley

A rough estimate is that it equals 30 to 35 words.

The Guardian - Opinion

Two months ago, the Congressional Budget Office gave a rough estimate of $25 billion.

The New York Times

Only a rough estimate of the number of his pupils is possible.

Britannica

That's a rough estimate because no one is actually tracking how much we're wasting.

The Washington Post

The bill -- a rough estimate -- is in the vicinity of $5.9 million.

The New York Times - Style

At a rough estimate this means 120 million children were born in 1976.

The Guardian - Lifestyle

Expert writing Tips

Best practice

Use "a rough estimate" when precision isn't critical or when only limited data is available. It is suitable for initial planning, budgeting, or providing a general sense of scale.

Common error

Avoid basing critical decisions solely on "a rough estimate" without acknowledging its limitations. Always seek more precise data or refined calculations when accuracy is essential.

Linguistic Context

The phrase "a rough estimate" functions as a noun phrase that quantifies a calculation or approximation. It serves to indicate that the estimate is not exact, and the level of precision is approximate. This aligns with Ludwig's findings that this phrase is often used to convey inexactness or a general value.

Expression frequency: Very common

Frequent in

News & Media

36%

Science

29%

Academia

22%

Less common in

Formal & Business

6%

Encyclopedias

3%

Wiki

3%

Ludwig's WRAP-UP

In summary, "a rough estimate" is a frequently used phrase to denote an approximate calculation. As confirmed by Ludwig, it's grammatically correct and appears most often in news, scientific, and academic contexts. When writing, use it when a precise figure isn't available or necessary, but be sure to acknowledge its limitations. Related phrases like "a ballpark figure" or "an approximate calculation" can be suitable alternatives, depending on the specific nuance you want to convey.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

an approximate calculation

Focuses on the calculation being not exact.

a ballpark figure

Emphasizes a general idea of the amount.

a guesstimate

Combines "guess" and "estimate", implying less precision.

a tentative assessment

Highlights the assessment as being provisional.

a preliminary approximation

Indicates an initial, not fully refined approximation.

a crude calculation

Stresses the lack of refinement in the calculation.

an educated guess

Highlights the guess being based on knowledge and experience.

a broad brushstroke

Emphasizes a lack of detail and precision.

a back-of-the-envelope calculation

Suggests a quick and informal calculation.

a working figure

Highlights the figure being used for planning purposes, but subject to change.

FAQs

How can I use "a rough estimate" in a sentence?

You can use "a rough estimate" when you want to indicate an approximate calculation, such as: "Based on current market trends, I can give you "a rough estimate" of the potential revenue."

What phrases can I use instead of "a rough estimate"?

Alternatives to "a rough estimate" include "an approximate calculation", "a ballpark figure", or "a guesstimate", depending on the context.

When is it appropriate to use "a rough estimate"?

It is appropriate to use "a rough estimate" when precise data is unavailable or when providing a general idea is sufficient. It is often used in initial planning or preliminary discussions.

What are the limitations of using "a rough estimate"?

The main limitation of using "a rough estimate" is its lack of precision. It should not be used for critical decisions that require accurate data, as it can be misleading. More refined calculations or precise measurements are needed in such situations.