Translation guide
Expresses that something is good for the environment, causes minimal harm, or is sustainable. Japanese uses various adjectives, compound nouns, and set phrases depending on context.
environmentally friendly (general)
eco-friendly (casual)
Describing products, actions, or lifestyles that are kind to the environment.
The most common and direct translation. Literally 'gentle to the environment'. Used for products, practices, and policies.
This detergent is environmentally friendly.
I try to live an environmentally friendly lifestyle.
Short for 'ecological' or 'eco-friendly'. Very common in everyday speech and marketing. Often used as a prefix.
Formal term meaning 'environmentally considerate type'. Used in business and technical contexts for products or systems.
Literally 'gentle to the Earth'. Emphasizes global environmental benefit. Common in advertising and casual speech.
Focus on long-term sustainability, renewable resources, or minimal ecological footprint.
Describing a person's attitude or habits that are environmentally aware.
Emphasizing that something does not damage or pollute the environment.
環境に優しい is the standard phrase and can be used in any context. エコ is a casual abbreviation often used in product names (エコバッグ, エコカー) and everyday speech. In formal writing or speeches, 環境に優しい or 環境配慮型 is preferred.
I go shopping with an eco-friendly bag.
This car is very eco-friendly.
Our company develops environmentally friendly products.
We use environmentally friendly materials.
We aim for a sustainable society.
We need sustainable energy sources.
Means 'low environmental impact'. Technical term used in product assessments and corporate sustainability reports.
This packaging is designed to be environmentally friendly (low impact).
Loanword from English 'sustainable'. Used in fashion, lifestyle, and marketing, but less common than 持続可能な in formal writing.
I'm interested in sustainable fashion.
She is environmentally conscious.
More casual version using エコ. Common in everyday conversation.
Recently, the number of eco-conscious people has been increasing.
Is this material environmentally friendly?
Means 'does not pollute the environment'. More specific and slightly formal.
This factory uses technology that is environmentally friendly (does not pollute).
Eco-bags are an environmentally friendly choice.
Avoid directly translating 'friendly' as 友好的 (friendly in a social sense). 環境に友好的 is not idiomatic. Use 環境に優しい instead.
environmentally friendly product