When do I use 其实 vs 实际上?

Use 其实 in informal, conversational settings when you want to gently correct a misconception or give a personal opinion. Use 实际上 in formal, objective statements, especially in writing, to state a fact that contrasts with expectations.

Can 其实 and 实际上 be used interchangeably?

In many cases, yes, but the tone changes. 其实 is more subjective and conversational, while 实际上 is more objective and formal. In casual speech, 其实 is preferred; in formal writing, 实际上 is better.

Is 实际上 always an adverb?

Yes, 实际上 is an adverbial phrase meaning 'in fact' or 'actually.' It can also be used as a noun modifier with 的, as in 实际上的问题 (the actual problem), but it retains its adverbial essence.

Can I use 其实 to start a sentence?

Yes, 其实 often starts a sentence or clause to introduce a contrasting truth. It is common at the beginning of a statement in everyday Chinese.

Easily confusedHSK 4

其实 vs 实际上 (qíshí vs shíjìshàng): which 'actually' to use

Both 其实 and 实际上 mean 'actually' or 'in fact,' but they differ in register and nuance. 其实 is conversational, used to gently correct a misconception or reveal a contrasting truth. 实际上 is more formal and objective, often employed in factual statements, comparisons, or written contexts. The choice depends on tone and setting.

其实 and 实际上 both translate to 'actually' or 'in fact,' but serve different registers and subtle implications. 其实 is subjective and conversational, often introducing a contrasting viewpoint or a correction to a previous assumption. It is common in speech and informal writing. 实际上 is objective and formal, used to state facts, statistical data, or objective contrasts, typical of written reports, formal speeches, and academic contexts. While they are sometimes interchangeable, 其实 sounds more natural in casual conversation, and 实际上 is preferred in formal writing.

When to use each

其实qíshí

actually, as a matter of fact (conversational)

Use 其实 when you want to gently correct a misunderstanding, reveal a contrasting truth, or express a personal opinion that goes against what was previously thought. It is common in everyday speech and informal writing. For example, to say 'Actually, I don't like coffee.'

其实 can also be used to preface a more accurate or nuanced statement without strongly negating the previous statement, often with a softening effect.

实际上shíjìshàng

in fact, actually (formal/objective)

Use 实际上 when stating objective facts, statistical data, or in formal contexts such as academic writing, news reports, or professional discussions. It emphasizes factual accuracy and contrasts with expectations or appearances. For example, 'In fact, the population has decreased.'

实际上 can be used as an adverbial phrase '在实际上' with the same meaning, but the standalone form is more common. It can also be use with 的 as a noun modifier (e.g., 实际上的问题).

At a glance

	其实	实际上
Register	Informal, conversational	Formal, objective
Typical context	Daily speech, informal writing	Academic, formal writing, news reports
Subjectivity	Can express personal opinion, soft correction	Neutral, factual statement
Nature of contrast	Often corrects a misconception with a personal touch	States objective fact that contradicts appearance
Common structure	Adverb; often sentence-initial or before the verb	Adverb; often sentence-initial; can also modify nouns with 的

Examples

其实
其实，我不喜欢吃辣的。
Qíshí, wǒ bù xǐhuān chī là de.
Actually, I don't like spicy food.
Conversational correction of an assumption.
实际上
实际上，全球变暖是一个真实的威胁。
Shíjìshàng, quánqiú biàn nuǎn shì yīgè zhēnshí de wēixié.
In fact, global warming is a real threat.
Formal factual statement.
其实
他表面上很自信，其实很紧张。
Tā biǎomiàn shàng hěn zìxìn, qíshí hěn jǐnzhāng.
He appears confident, but actually he is very nervous.
Contrast between appearance and reality in speech.
实际上
实际上的成本比预算高很多。
Shíjìshàng de chéngběn bǐ yùsuàn gāo hěnduō.
The actual cost is much higher than the budget.
Using 实际上的 as a noun modifier in a formal context.
其实
其实/实际上，这个问题很简单。
Qíshí/Shíjìshàng, zhège wèntí hěn jiǎndān.
Actually, this problem is very simple.
Both are acceptable here; 其实 is more casual, 实际上 more formal.

Common mistakes

Using 实际上 in casual conversation where 其实 would sound more natural (e.g., '实际上，我不饿' sounds too formal; use 其实).
Using 其实 in formal writing where 实际上 would be more appropriate (e.g., writing '其实，根据数据显示...' in a research paper; replace with 实际上).
Overusing either term to introduce every sentence—both are contrastive and should only be used when there is a clear contrast or correction.
Confusing 其实/实际上 with 真实 (zhēnshí, 'real/true') or 实际 (shíjì, 'actual') as adjectives; 其实 and 实际上 are adverbs.

FAQ

When do I use 其实 vs 实际上?: Use 其实 in informal, conversational settings when you want to gently correct a misconception or give a personal opinion. Use 实际上 in formal, objective statements, especially in writing, to state a fact that contrasts with expectations.
Can 其实 and 实际上 be used interchangeably?: In many cases, yes, but the tone changes. 其实 is more subjective and conversational, while 实际上 is more objective and formal. In casual speech, 其实 is preferred; in formal writing, 实际上 is better.
Is 实际上 always an adverb?: Yes, 实际上 is an adverbial phrase meaning 'in fact' or 'actually.' It can also be used as a noun modifier with 的, as in 实际上的问题 (the actual problem), but it retains its adverbial essence.
Can I use 其实 to start a sentence?: Yes, 其实 often starts a sentence or clause to introduce a contrasting truth. It is common at the beginning of a statement in everyday Chinese.