Calendar vs. Calender
Use “calendar” for dates, schedules, or a system of organizing the year. “Calender” is a different technical word, not the ordinary spelling for a date calendar. Do not label every “calender” as a typo: it has legitimate specialist meanings, but those meanings are unrelated to dates and schedules.
Use “calendar” for dates, schedules, or a system of organizing the year. “Calender” is a different technical word, not the ordinary spelling for a date calendar.
Key details
Further guidance
Core difference
Use “calendar” for dates, schedules, or a system of organizing the year. “Calender” is a different technical word, not the ordinary spelling for a date calendar.
Fast Test
If you mean dates, months, appointments, or scheduling, choose “calendar.”
Usage Boundary
Do not label every “calender” as a typo: it has legitimate specialist meanings, but those meanings are unrelated to dates and schedules.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Calendar — Merriam-Webster (opens in a new tab)Merriam-Webster · Dictionary evidence for calendar as a system, date table, schedule, and related verb.
- Calender — Merriam-Webster (opens in a new tab)Merriam-Webster · Dictionary evidence that calender is a separate industrial verb/noun for roller pressing, with an additional historical Sufi noun sense.