Calendar or Calender: Which Is Correct?

Updated 2026-10-03 · Which One Is Correct editorial team

Quick answer: If you are planning events, the correct spelling is calendar. Many people mistakenly add an extra 'e', creating calender, which actually refers to a heavy industrial machine used to flatten materials like paper or fabric.

The Short Answer

The word calendar is the only correct spelling for a chart showing days, weeks, and months. It is the standard term used in all English-speaking regions for organizing time.

Confusion arises because the word calender exists in English, but it has a completely different meaning related to manufacturing. Writers often assume the two are interchangeable or misspell the date tool by adding an unnecessary vowel.

Side-by-Side Comparison

Form	Status	Use it when
calendar	Correct	Referring to a system of organizing days and months.
calender	Incorrect for dates	Never use this when talking about time or scheduling.
calender	Correct noun	Describing a machine that smooths or flattens materials.
calender	Correct verb	Talking about the act of rolling material through a machine.

Correct Example Sentences

Please mark the holiday dates on your wall calendar.
The digital calendar sends automatic reminders for meetings.
Our production schedule is packed for the next month.
She checked the academic calendar for exam dates.
The factory uses a heavy machine to smooth the paper.
Workers must calender the fabric to ensure a uniform texture.
The new machine can calender leather with great precision.
I added the party details to my phone calendar.
The lunar calendar helps farmers predict planting seasons.
Please update the shared calendar with the new office hours.

Common Mistakes and Fixes

I booked the room on the calender.: I booked the room on the calendar.
Check the calender for the meeting date.: Check the calendar for the meeting date.
Our calender shows it is Tuesday.: Our calendar shows it is Tuesday.
Add the event to the office calender.: Add the event to the office calendar.
The calender year starts on January first.: The calendar year starts on January first.
She synced her calender with her phone.: She synced her calendar with her phone.

A Quick Test You Can Use

To determine which word fits your sentence, ask yourself if you are discussing time or industrial processing. If the context involves dates, schedules, or years, you need the word for the time organizer. If you are describing a machine that presses or flattens materials, then the other spelling is appropriate.

Related Word Pairs

Principal vs Principle: Principal is a person or amount; principle is a rule or belief.
Effect vs Affect: Effect is the result; affect is the action causing the change.
Their vs There: Their shows possession; there indicates a place or existence.
Lose vs Loose: Lose means to fail to keep; loose means not tight.
Stationary vs Stationery: Stationary means not moving; stationery refers to writing paper.

More Example Sentences

Please consult the editorial calendar to find the next publishing deadline.
The factory floor includes a large machine known as a calender.
I synced my work calendar with the team's shared schedule.
Engineers adjust the rollers in the calender to control paper thickness.
Mark the important dates on your home calendar before guests arrive.
The textile mill uses a steam calender to press the fabric smooth.
Check the school calendar for the upcoming parent-teacher conference.
A high-quality calender removes wrinkles from leather surfaces.
Add the holiday party to the community calendar now.
The printing press requires a calender roll for proper finish.
I checked my calendar and saw we have a free afternoon.
The factory worker monitored the calender temperature carefully.
Reserve the conference room using the office digital calendar.
The antique calender was restored to its original working condition.
Update your personal calendar with the new flight details.

Quick Practice

Please mark the birthday on your .

calendar

The factory uses a to smooth the paper.

calender

I checked the for the next team meeting.

calendar

The machine is a steam used in textile production.

calender

Add the event to the shared office .

calendar

A large presses the leather to a finish.

calender

Frequently Asked Questions

Is calender a real word?

Yes, calender is a real word, but it refers to a machine used to flatten materials. It is not the correct spelling for a chart showing dates, months, and years.

Why do people misspell calendar?

People often misspell it because they confuse it with calender. The similar sounds and the existence of the industrial term lead many writers to add an extra 'e' by mistake.

What is the origin of the word calendar?

The word comes from the Latin term meaning a moneylender's book of accounts. It originally referred to a list of debts, which were often due on specific days of the month.

Can I use calender for a school schedule?

No, you should never use calender for a school schedule. Using that spelling suggests you are talking about an industrial machine, which would confuse your readers significantly.