Of Course or Ofcourse: Which Spelling Is Correct?

Your boss asks if you can join a last-minute call. You type a quick reply, hit send, and spot the red squiggle a second too late: “Ofcourse!” It happens to fast typists and careful writers alike, and the Of Course or Ofcourse question shows up in chats, emails, and school essays every day.

A reply meant to sound confident can end up looking sloppy. The fix is simple, and once you see why, you will not second-guess it again.

What Does “Of Course” Mean?

Of course is an adverbial phrase. It tells the listener that something is expected, obvious, or fine with you. Depending on the sentence, it can mean:

Naturally or obviously: “Of course the store is closed on Sunday.”
Yes, certainly: “Can I borrow your pen?” “Of course.”
As you would expect: “He was late, of course.”
Granted or admittedly: “Of course, there are other options, but this one is the cheapest.”

The phrase comes from an older sense of the word “course,” meaning the normal order of things. When something happens “of course,” it follows the usual path.

Is “Ofcourse” a Real Word?

No. Dictionaries do not list “ofcourse” as a word. It is a misspelling that happens when two words that are often typed together get squeezed into one.

You will see it in texts, social media comments, and quick chats. That does not make it correct. In emails, resumes, essays, and anything someone else will judge, use the two-word form.

Why People Write “Ofcourse”

A few simple habits cause the mistake.

The words blend when you say them. In speech, “of course” sounds like one smooth sound, so it feels like one word.

Fast typing skips the spacebar. When you type a phrase a hundred times, your fingers stop pausing.

Texting habits spill over. Informal messages often drop spaces and punctuation, and the habit follows people into emails.

Other compound words confuse the pattern. Words like “because,” “maybe,” and “however” are single words that started as separate ones. It is easy to assume “of course” went the same way. It did not.

Of Course vs Ofcourse at a Glance

Feature	Of course	Ofcourse
Correct in standard English	Yes	No
Number of words	Two	One (incorrect)
Found in dictionaries	Yes	No
Safe for work and school	Yes	No
Example	“Of course I’ll help.”	“Ofcourse I’ll help.” (wrong)

The rule never changes. If you are unsure, add the space.

How to Use “Of Course” in a Sentence

The phrase is flexible. It can start a sentence, sit in the middle, or stand alone as a full reply.

At the start of a sentence. A comma often follows, especially when the phrase adds a small aside.

“Of course, you can bring a friend.”
“Of course it’s raining. I forgot my umbrella.”

In the middle of a sentence. Commas usually set it off when it works as an interruption.

“The results, of course, were not a surprise.”
“She will, of course, be paid for her time.”

At the end of a sentence. Place a comma before it.

“We will bring snacks, of course.”

As a short answer. This is where the phrase shines.

“Are you coming tonight?” “Of course!”
“Could you send the file?” “Of course. One moment.”

Tone Matters: Friendly, Neutral, or Sarcastic

“Of course” can carry different feelings depending on how you say it or what surrounds it.

Sentence	Tone
“Of course, I’d be happy to help.”	Warm and polite
“Of course the meeting is at 8 a.m.”	Neutral, or slightly tired
“Oh, of course you forgot.”	Sarcastic or annoyed
“Well, of course I know that.”	Defensive

In writing, you cannot rely on voice, so word choice around it matters. If you want to sound kind, add a friendly phrase: “Of course, happy to help.” If you worry it may sound sharp, try “Sure,” “Certainly,” or “Absolutely.”

Of Course vs Off Course

This pair looks alike and trips people up in the other direction.

Of course: naturally, obviously.
Off course: away from the planned path, often used for ships, planes, or plans.

Examples:

“Of course I’ll be there.”
“The storm pushed the boat off course.”
“Our project went off course when the budget changed.”

If you can swap in “naturally,” you want of course. If you can swap in “away from the route,” you want off course.

“Of Course Yes” and “Of Course Not”

Learners often ask whether “of course yes” is correct. It is understandable, but it sounds unnatural to most native speakers. “Of course” already means “yes, naturally,” so adding “yes” repeats the idea.

Better options:

“Yes, of course.”
“Of course.”
“Yes, absolutely.”

On the other hand, “of course not” is perfectly correct and common:

“Do you mind if I sit here?” “Of course not.”
“Did you take my keys?” “Of course not!”

Here, “of course” strengthens the answer “no.”

Is “Of Course” Formal or Informal?

It sits comfortably in the middle. You can use it in most settings, from casual chats to business emails. The key is tone, not the phrase itself.

Fine in professional writing:

“Of course, I can send the report by Friday.”
“We will, of course, review your request.”

Better to rephrase in very formal writing:

Instead of “Of course,” a formal letter might use “Certainly” or “Naturally.”

In academic writing, use it sparingly. Phrases like “of course” can imply that something is obvious, which may weaken an argument if the reader does not agree. If a point needs support, give the support instead.

Other Ways to Say “Of Course”

Variety keeps your writing fresh. Pick the one that fits your tone.

Alternative	Best for
Certainly	Formal replies
Absolutely	Strong, friendly agreement
Sure	Casual conversation
Naturally	Writing that explains the obvious
Definitely	Confident agreement
By all means	Offering permission politely
No problem	Responding to a request
Without a doubt	Emphasizing certainty

Easy Ways to Remember the Spelling

Think “of” plus “course,” like “of” plus “late.” Both are separate words that sit together.
Say each word slowly once. Your fingers will follow your voice.
Compare it with similar phrases. “At least,” “a lot,” and “each other” are all two-word phrases that people sometimes squeeze together by mistake.
Watch the red squiggle. Most spell checkers flag “ofcourse.” If you see the line, add the space.
Search before you send. For important documents, use Ctrl+F (or Cmd+F) to find “ofcourse” and fix every match.

Common Mistakes to Avoid

Writing “ofcourse” in emails. It makes a polite message look rushed.

Using “of course” too often. If every answer starts with it, the phrase loses its charm and can sound impatient.

Mixing it up with “off course.” One letter changes the meaning completely.

Adding “yes” after it. “Of course yes” repeats itself. Pick one.

Forgetting the commas. When “of course” interrupts a sentence, set it off: “The plan, of course, needs approval.”

Quick Practice Quiz

Which is correct: of course or ofcourse?
Fill in the blank: “______ I can help you with that.” (Of course / Ofcourse)
Which means “away from the planned path”: of course or off course?
True or false: “Of course yes” is the best way to say “yes, naturally.”
Choose the correct sentence: “She is, of course, invited.” or “She is, ofcourse, invited.”

Answers: 1) of course, 2) Of course, 3) off course, 4) False, 5) “She is, of course, invited.”

Frequently Asked Questions

Is “ofcourse” ever correct?

No. “Ofcourse” is not accepted in standard English. The correct form is always the two-word phrase “of course.”

Why do people type “ofcourse”?

The words run together when spoken, and fast typing or texting habits often skip the space. It is a habit mistake, not a real variant.

Is “of course” formal or informal?

It works in both. It is polite enough for most emails and natural in conversation. For very formal writing, you can use “certainly” or “naturally.”

Is it correct to say “of course yes”?

It is not wrong in the sense of being understood, but it sounds unnatural because “of course” already means yes. Say “Yes, of course” or just “Of course.”

What is the meaning of “of course”?

It means “naturally,” “obviously,” or “yes, certainly.” You can use it to agree, to give permission, or to point out something expected.

Conclusion

The Of Course or Ofcourse question has a one-line answer: of course is correct, and it always has a space. Treat “ofcourse” as a typo, keep an eye out for “off course” in the wrong place, and choose your tone with care. A single space is a small thing, but it keeps your message clear and professional.