割に details
Examples
considering N/that X — states a result that is disproportionate, better or worse, to a stated benchmark
頑張ったわりに、点数低かったな。
ganbatta wari ni, tensuu hikukatta na.
Considering how hard I tried, my score was pretty low. casual
この店は値段のわりに料理がおいしいです。
kono mise wa nedan no wari ni ryouri ga oishii desu.
For its price, the food at this restaurant is good. neutral
今回の製品は開発費のわりに売り上げが伸びておりません。
konkai no seihin wa kaihatsuhi no wari ni uriage ga nobite orimasen.
Given the development costs, this product's sales have not grown as much as expected. formal
comparatively; fairly — a stand-alone degree adverb with no benchmark named
このお店、わりとおいしいよ。
kono omise, wari to oishii yo.
This place is pretty good, actually. casual
今日はわりに涼しいですね。
kyou wa wari ni suzushii desu ne.
It's comparatively cool today. neutral
Formation
plain clause + わりにattaches to plain clause{N}のわりにattaches to noun
Notes
and i-adjectives attach bare (勉強したわりに, 高いわりに).
Related patterns
Similar
のに frames the two halves as a binary counter-expectation carrying the speaker's own affect — surprise, complaint, or even relief (安[やす]いのにおいしい is a pleasant surprise, not a complaint); わりに instead measures the outcome against a GRADABLE benchmark set by the first clause, so ×雨[あめ]が降[ふ]っているわりに出[で]かけた is odd (raining is not a scalar benchmark) where 雨[あめ]が降[ふ]っているのに出[で]かけた works fine.