At a glance
Look at the function the word, section or document performs in context. Form and placement help, but function is the stronger test. The table gives the scan-friendly answer; the detailed sections explain the distinctions and exceptions that a short definition can miss.
What is Biography?
A biography is a nonfiction narrative about a person’s life written by another author. A biographer may use interviews, letters, archives, public records and other sources to reconstruct events and context.
What is Autobiography?
An autobiography is a nonfiction account in which the subject writes about their own life. It usually uses first-person perspective and relies strongly on the author’s memories, records and interpretation of personal experience.
Biography vs Autobiography: comparison table
| Point of comparison | Biography | Autobiography |
|---|---|---|
| Author | Someone other than the subject | The subject |
| Typical point of view | Third person | First person |
| Access to inner experience | Inferred from sources/interviews unless documented | Directly described by the subject |
| Perspective | External interpretation | Personal retrospective interpretation |
| Source base | May draw widely on independent evidence | Often centered on memory and personal records |
| Bias risk | Biographer selection and interpretation | Self-presentation, memory and hindsight |
| Authorization | Can be authorized or unauthorized | By definition written by the subject |
| Example form | Life of a historical figure by a historian | Public figure recounting their own life |
Key differences explained
1. Author
For Biography, the key point is Someone other than the subject. For Autobiography, it is The subject. This is often one of the fastest checks when the two terms are being confused.
2. Typical point of view
Under typical point of view, compare the descriptions directly: Biography — Third person. Autobiography — First person. Keeping this dimension separate prevents a similarity elsewhere from hiding an important distinction.
3. Access to inner experience
The practical split for access to inner experience is Biography: Inferred from sources/interviews unless documented versus Autobiography: Directly described by the subject. Use this point together with the definitions above rather than as an isolated rule.
4. Perspective
If perspective is the question, use the comparison-table wording directly: Biography — External interpretation; Autobiography — Personal retrospective interpretation. Context determines how much weight this difference should carry.
5. Source base
Another separator is source base. The relevant descriptions are May draw widely on independent evidence for Biography and Often centered on memory and personal records for Autobiography. This becomes useful when both terms appear in the same broader subject area.
6. Bias risk
For this dimension, read the contrast as Biography — Biographer selection and interpretation and Autobiography — Self-presentation, memory and hindsight. Check the surrounding context because jurisdiction, species, standards, product specifications or professional usage may narrow the general rule.
Other practical distinctions
- Authorization: Biography: Can be authorized or unauthorized. Autobiography: By definition written by the subject.
- Example form: Biography: Life of a historical figure by a historian. Autobiography: Public figure recounting their own life.
Similarities
- Both are nonfiction life-writing forms.
- Both select events rather than documenting every moment of a life.
- Both may include historical context, relationships, achievements and failures.
- Both should distinguish verifiable fact from interpretation.
Practical examples
- A historian writing the life of Marie Curie is producing a biography.
- A scientist writing a book about their own childhood, career and discoveries is producing an autobiography.
How to distinguish them in practice
Look at the function the word, section or document performs in context. Form and placement help, but function is the stronger test.
Common mistakes to avoid
- Looking only at spelling or position instead of the word’s function in the sentence or document.
- Assuming two forms are interchangeable because they discuss the same subject.
- Ignoring style-guide, institutional or assignment requirements.
- Using an example without checking what role each word or section performs.
Frequently asked questions
Is a memoir the same as an autobiography?
Not exactly. A memoir usually concentrates on selected experiences or themes, while an autobiography often attempts a broader chronological life account.
Can a biography be unauthorized?
Yes. A biographer can write from lawful public and private sources without the subject’s authorization, subject to applicable law.
Are autobiographies always accurate?
They are valuable first-person sources but memory, perspective and self-presentation can affect accuracy.
What point of view does an autobiography use?
Usually first person: I, me, my and we.
Bottom line
A biography is an account of a person’s life written by someone else. An autobiography is a person’s account of their own life, written from their own perspective. The most useful first check is author: Biography — Someone other than the subject; Autobiography — The subject.
Sources and further reading
Restoration note: This is newly written content for a historical KnowDifferences topic and URL, rather than a verbatim copy of the former article.
KnowDifferences Editorial Team
Independent explanations with definitions, practical examples and references. Read our editorial approach.