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
half length
Grammar usage guide and real-world examplesUSAGE SUMMARY
'half length' is a correct and usable phrase in written English.
It is used to compare the size of two objects, where one object is half the size of the other. For example, "This straw is half the length of that one."
✓ Grammatically correct
Science
Wiki
News & Media
Alternative expressions(5)
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
12 human-written examples
Half Length Portrait, Young Man Seated, Fancy Bow Tie.
Academia
Private Parking was third, half length farther back.
News & Media
M. Miley, L., & Simpson, R. L. Half length portrait, young man seated, fancy bow tie.
Academia
Half Length Portrait of a Girl, Guerin, 2011 Photographs by Nan Goldin.
News & Media
Fracture half length (m).
Hydraulic fracture half length, ft. Gas density, g/cm3.
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
Fold a 46 cm x 57 cm piece of Whatman paper in half length-wise.
Science
Fold the bacon in half length-wise.
Wiki
Fold the tulle half length-wise.
Wiki
Cut one full sheet in half length-wise.
Wiki
defer.add img); Fold each rectangle in half length-wise.
Wiki
Expert writing Tips
Best practice
Combine "half length" with units of measurement (e.g., "half length of 10 meters") to provide clear and unambiguous information, avoiding potential misunderstandings.
Common error
Avoid using "half length" when you mean "halfway". "Half length" refers to a measurement, while "halfway" indicates a position or point in the middle. For example, say "the race is halfway over", not "the race is half length over".
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
Half length primarily functions as a compound adjective, often modifying nouns to describe dimensions or proportions. Ludwig's examples show its application in technical contexts (fracture mechanics, material science) and general descriptions (portraiture, cooking). The phrase serves to specify a measurement relative to a total length.
Frequent in
Science
50%
Wiki
30%
News & Media
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
Half length is a grammatically correct phrase that functions primarily as a compound adjective, commonly used to describe a dimension that is 50% of the total length. As Ludwig AI confirms, it’s a usable phrase found across diverse contexts, ranging from technical scientific papers to everyday instructions on WikiHow. Its frequency is classified as common due to its usage in a variety of domains, including science, news and media, and general instructional content. When using this term, it's important to distinguish it from "halfway" and to ensure precision in technical or descriptive contexts. The phrase is prevalent in authoritative sources like the Journal of Petroleum Exploration and Production Technology and The New York Times.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
one-half length
Provides a more explicit mathematical representation of the length.
50% length
Uses percentage to denote the proportion of the length.
mid-length
Focuses on the intermediate point of the length rather than a precise measurement.
semi-length
Emphasizes that it's partially the full length, implying less precision.
half the distance
Shifts the focus to distance rather than a physical length.
bisected length
Highlights the act of dividing the length into two equal parts.
halfway point
Identifies the specific location at the middle of the length.
lengthwise halved
Specifies the direction in which the halving occurs, emphasizing the manner of division.
reduced length by half
Highlights action of reducing the total length
sectional length
Referring to a portion of an object's extension
FAQs
How can I use "half length" in a sentence?
You can use "half length" to describe a measurement that is 50% of the total length of something. For example, "The fracture has a "half length" of 5 meters".
What's the difference between "half length" and "mid-length"?
"Half length" refers to exactly 50% of the total length, while "mid-length" suggests a general middle point without necessarily being mathematically precise.
Is it correct to say "a half length" instead of "half length"?
While "a half length" might be understood, it's less common and can sound awkward. "Half length" is generally the preferred and more natural phrasing.
When should I use "one-half length" instead of "half length"?
You can use "one-half length" for emphasis or in more formal contexts, particularly where mathematical precision is important. However, "half length" is suitable for most situations.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested