How to tell them apart
Both judge a result against an expectation, but 割に（は） links two qualities of the same subject (安い割に機能がいい: cheap yet functional), while にしては judges one trait against a category or known standard (日本の車にしては大きい: big for a Japanese car). Swapping them is unnatural because 割に（は） needs a proportional contrast within the item, whereas にしては invokes a general stereotype or background fact. Use 割に（は） for an unexpected balance between two attributes; use にしては when the benchmark is a group or prior assumption.
- 割に（は） Use 割に（は） when two qualities of the same thing are surprisingly out of proportion.
- にしては Use にしては when judging something against a general standard or category expectation.
| Grammar point | Meaning | JLPT level |
|---|---|---|
| 割に（は） ni ha | Fairly; in relative terms; when judged against what one would expect | N2 |
| にしては nishiteha | Considering something's usual standard; for | N3 |
割に（は） ni ha
Fairly; in relative terms; when judged against what one would expect
割に(は) shows that an evaluation is relative to what would be expected from a standard, often translated as for or considering, as in 年の割に若い. It attaches to a noun with の, to a plain verb, to an い-adjective, and to a な-adjective stem with な, while the optional は adds contrastive emphasis. It is neutral in style, but the main judgment often goes against expectation, so it is not used for exact ratios or prices.
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彼のお母さんは年のわりには若く見える。
His mother looks young for her age.
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彼の祖父は年の割にまだたいへん健康だ。
His grandfather is still very healthy for his age.
にしては nishiteha
Considering something's usual standard; for
にしては expresses an evaluation against what is normal or expected for a person, time, or category, often translated as for or considering. It follows a noun directly, as in 子供にしては or ７月にしては, without の or な in between. The judgment that follows often differs from expectation, so it pairs naturally with expressions of surprise or comparison.
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13歳にしては背がとても高かった。
He was very tall for a thirteen-year-old.
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中古車にしては、値段が幾分高い。
The price is kind of high for a used car.
割に（は） and にしては are JLPT N3–N2 grammar points that Japanese learners often mix up. This page compares them side by side on meanings, usage and example sentences, so you can tell them apart.