Used to indicate that something happens or is done on every occasion. Often used in formal or business settings, but also common in everyday speech.
Please let us know by email each time you have a question.
Please prepare minutes each time there is a meeting.
Whenever I meet him, he tells me about a new idea.
We send a confirmation document each time the contract is renewed.
都度 is a more formal, written equivalent of 度, often seen in business contexts like その都度ご連絡します.
都度 is a more formal, often business-style synonym for 度に, commonly seen in set phrases like その都度.
都度 means 'each time' and shares the kanji 都 with 都合, but 都合 means 'circumstances/convenience' and has no connection to repetition.
Standard kanji spelling; used in formal and business contexts.
Kana spelling is common in everyday writing and informal contexts.
Composed of 都 (all, every) and 度 (time, occasion). The kanji combination directly conveys the meaning of 'each time'.