Research Paper Outline Template (2026 Guide) 📑

You can outline a full research paper in under 30 minutes with a ready-made template — you just need the right structure for your citation style.

In this guide, you’ll get:

Copy-and-paste outline templates for MLA, APA, and decimal formats
A real, filled-in example you can model your own paper on
The exact section order for argumentative, analytical, and experimental papers
A step-by-step process to turn a blank page into a finished outline

Here’s everything you need to outline your next paper.

What is a research paper outline?

A research paper outline is a structured plan that organizes your thesis, main points, and supporting evidence into a hierarchy before you write the full draft. It maps every section — introduction, body paragraphs, and conclusion — so you know exactly what each part of your paper will argue.

Think of it as the skeleton of your paper. Once the bones are in place, drafting becomes a matter of adding flesh — explanations, citations, and transitions — rather than figuring out what comes next.

A good outline does three things: it keeps your argument aligned with your thesis, prevents you from forgetting key evidence, and saves hours of rewriting later. The same logic powers any book outline template — structure first, words second.

Research paper outline template (copy this)

Here’s a universal alphanumeric template that works for most assignments. Copy it, then swap the placeholders for your own thesis and evidence.

TITLE: [Your paper title]
THESIS: [One-sentence claim your whole paper proves]

I. Introduction
   A. Hook / opening context
   B. Background information
   C. Thesis statement

II. Body Point 1 — [First main argument]
   A. Topic sentence
   B. Evidence / source 1
   C. Analysis (why it supports the thesis)
   D. Transition to next point

III. Body Point 2 — [Second main argument]
   A. Topic sentence
   B. Evidence / source 2
   C. Analysis
   D. Transition

IV. Body Point 3 — [Third main argument]
   A. Topic sentence
   B. Evidence / source 3
   C. Analysis

V. Counterargument (optional)
   A. Opposing view
   B. Your rebuttal

VI. Conclusion
   A. Restate thesis (reworded)
   B. Summarize main points
   C. Broader implication / call to action

The alphanumeric format — Roman numerals for sections, capital letters for subpoints, numbers for details — is the most common structure and the one most instructors expect. According to Purdue OWL, it’s the default outline style taught across U.S. universities.

The three outline formats explained

There are three standard research paper outline formats: alphanumeric, full-sentence, and decimal. They share the same hierarchy but differ in how much detail each line contains. Pick one and stay consistent.

Format	What each line contains	Best for
Alphanumeric	Short phrases	Most papers, quick planning
Full-sentence	Complete sentences	Complex arguments, group work
Decimal	Numbered levels (1.0, 1.1, 1.1.1)	Long, technical, or scientific papers

Alphanumeric outline

The alphanumeric format uses Roman numerals (I, II, III), capital letters (A, B, C), Arabic numbers (1, 2, 3), and lowercase letters (a, b, c) to nest ideas. Each line is a short phrase. It’s fast to build and easy to scan — the default choice for most students.

Full-sentence outline

A full-sentence outline looks identical in structure, but every heading and subpoint is written as a complete sentence. This format takes longer to build but lets you see exactly how your argument flows. Many writers find their first draft nearly writes itself afterward.

Decimal outline

A decimal outline replaces letters with a numbering system — 1.0, 1.1, 1.1.1 — that shows precisely how each idea nests under the one above it. It’s ideal for long or technical papers where you need to track many layers of detail without losing your place.

MLA research paper outline template

An MLA outline is used in the humanities — English, literature, foreign languages, and cultural studies. It centers the word “Outline” at the top, states the thesis directly beneath it, and uses the alphanumeric hierarchy. MLA outlines always include an introduction and a conclusion.

                    Outline

Thesis: [Your complete thesis statement here]

I. Introduction
   A. Background context
   B. Thesis statement

II. First main point
   A. Supporting idea
      1. Textual evidence
      2. Analysis
   B. Supporting idea

III. Second main point
   A. Supporting idea
   B. Supporting idea

IV. Conclusion
   A. Restate thesis
   B. Final reflection

Works Cited

Format MLA outlines in Times New Roman 12-point, double-spaced, with each level indented further than the one above it. For the full citation rules, the MLA Style Center is the official authority. If you’re citing a book inside your text, see our guide on how to write a book title in an essay.

APA research paper outline template

An APA outline is used in the social sciences — psychology, sociology, education, and business. Unlike MLA, APA papers built on original research follow a fixed section order: Introduction, Method, Results, and Discussion. This is often called IMRaD structure.

Title Page
Abstract (150–250 words)

I. Introduction
   A. Background and literature gap
   B. Research question / hypothesis

II. Method
   A. Participants
   B. Materials / instruments
   C. Procedure

III. Results
   A. Primary findings
   B. Statistical analysis

IV. Discussion
   A. Interpretation of results
   B. Limitations
   C. Future research

References

For argument-based APA papers (no original experiment), use the standard intro–body–conclusion structure instead. The official rules live in the APA Style guide. Writing a longer academic work? Our guides on how to write a dissertation and how to write an abstract cover the next steps.

A real filled-in example

Here’s the universal template filled in for a sample argumentative paper on social media and teen mental health. Use it as a model for how much detail each line should carry.

TITLE: The Double-Edged Screen: Social Media and Adolescent Mental Health
THESIS: While social media offers genuine connection, its design
        actively harms adolescent mental health and demands regulation.

I. Introduction
   A. Hook: 95% of U.S. teens use a social platform daily
   B. Background: rise of algorithmic feeds since 2012
   C. Thesis statement

II. Social media increases anxiety and depression
   A. Topic sentence: correlation in longitudinal studies
   B. Evidence: Twenge (2020) data on depression rates
   C. Analysis: links timing to smartphone adoption

III. Platform design exploits adolescent psychology
   A. Topic sentence: features engineered for engagement
   B. Evidence: variable-reward mechanics, infinite scroll
   C. Analysis: why teen brains are especially vulnerable

IV. Counterargument: social media also builds community
   A. Opposing view: support for marginalized teens
   B. Rebuttal: benefits don't outweigh documented harms

V. Conclusion
   A. Restate thesis (reworded)
   B. Summarize harms and design problem
   C. Call for platform regulation and digital literacy

Notice each body point names its evidence and analysis up front. That’s the secret: an outline detailed enough that drafting feels like connecting dots.

How to write a research paper outline, step by step

Follow these five steps to build an outline from a blank page.

Lock your thesis first. Write one clear sentence stating exactly what your paper will prove. Every section must support it. A vague thesis produces a vague outline — this is the same principle behind a strong thesis statement.
Brainstorm your main points. List every argument or finding that supports your thesis. Aim for three to five strong body points. These become your Roman numerals.
Group your evidence. Sort your sources, quotes, and data under the point each one supports. If a source doesn’t fit a point, you may be missing a section — or carrying dead weight.
Order for impact. Arrange points so the argument builds logically. A common pattern: strongest point first, address the counterargument, then close.
Add transitions and analysis notes. Under each subpoint, jot one line on why the evidence matters. This is the connective tissue that turns a list into an argument.

Organizing a large research project? Our guide on how to organize research for a nonfiction book goes deeper on managing dozens of sources at once.

Outline structure by paper type

The right outline depends on what kind of paper you’re writing. The four most common types each have a slightly different backbone.

Argumentative paper. Your outline centers on a debatable claim. Each body point is a reason that claim is true, backed by evidence, and you build in a counterargument section before the conclusion. This is the structure in the filled-in example above.

Analytical paper. Instead of arguing a side, you break a topic into parts and examine how they work. Body points become the components you’re analyzing — themes in a novel, variables in a trend, causes of an event — with evidence explaining each.

Experimental or scientific paper. Here you follow the fixed IMRaD order: Introduction, Method, Results, Discussion. The outline is less about persuasion and more about reporting what you did and what you found in a reproducible sequence.

Literature review. Your body points are organized by theme or by chronology of research, not by your own argument. Each section summarizes and synthesizes what existing studies found, then identifies the gap your work addresses.

Knowing your type before you outline saves you from forcing the wrong structure onto your evidence.

Outline vs. thesis vs. abstract

These three planning tools get confused, but each does a distinct job. Understanding the difference keeps your writing process clean.

The thesis is one sentence stating your central claim. It’s the seed everything grows from, and it lives at the top of your outline.

The outline is the full structural plan — your thesis expanded into sections, points, and evidence. You write it before drafting.

The abstract is a 150-to-250-word summary written after the paper is finished. It condenses your completed argument for readers deciding whether to read the full work. Our guide on how to write an abstract breaks this down in detail.

In short: the thesis is the claim, the outline is the plan, and the abstract is the recap. You build them in that order.

Common mistakes to avoid

Listing topics instead of arguments. “Social media” is a topic. “Social media increases adolescent anxiety” is an argument. Outline arguments, not subjects.
Mixing formats. Don’t switch between short phrases and full sentences mid-outline. Pick one and stay parallel throughout.
Skipping the analysis line. Evidence without analysis is just a quote dump. Note why each piece of evidence matters.
Forgetting the counterargument. A paper that ignores the other side reads as one-sided. Build in a rebuttal section.
Over-nesting. If you’re four levels deep on every point, your paper is probably trying to do too much. Tighten your scope.

How long should a research paper outline be?

A research paper outline should be roughly one page for every five to eight pages of final paper. A standard 10-page paper needs about a one-to-two-page outline covering the introduction, three to five body points with evidence, and the conclusion. Longer dissertations need proportionally longer outlines.

Detail matters more than length. A short outline with specific evidence under each point beats a long one full of vague placeholders. If you can draft a paragraph directly from each subpoint, your outline is detailed enough.

Can AI help you outline a research paper?

Yes — AI can generate a complete first-draft outline from your thesis and source list in seconds, which you then refine. Tools that understand long-form structure can suggest section order, flag missing evidence, and reorganize points for stronger flow.

The key is to treat the AI output as a starting scaffold, not a finished product. You still bring the thesis, the sources, and the judgment about what’s actually persuasive. This human-guided approach is the same one we cover in how to use AI for book research and AI for academic writing.

Using Chapter to structure long-form research writing

Our Pick — Chapter

Chapter is an AI writing platform built for long-form, structured nonfiction — the same outline-first workflow that powers strong research writing. You feed it your thesis and notes, and it helps you build and reorganize a full chapter-by-chapter structure before you draft.

Best for: Turning research and notes into a structured long-form draft (theses, reports, nonfiction books) Pricing: $97 one-time (nonfiction) Why we built it: Outlining is where most long writing projects stall — Chapter’s structure-first approach gets you past the blank page, the same way a research paper outline does.

Chapter isn’t a citation manager or a formatter for MLA and APA headers — use Purdue OWL or your style guide for those. But for organizing ideas into a logical, defensible structure before you write, it’s the tool we’d reach for. Over 2,147 authors have used it to write structured books, and it’s been featured in USA Today and the New York Times.

Frequently asked questions

What is the basic structure of a research paper outline?

The basic structure of a research paper outline is an introduction with a thesis, three to five body points each backed by evidence, and a conclusion. It uses a hierarchy — Roman numerals for sections, letters for subpoints — so your argument stays organized and aligned with your central claim.

What’s the difference between MLA and APA outline formats?

The main difference is structure and field. MLA outlines include an introduction and conclusion and suit humanities papers. APA outlines for original research follow a fixed IMRaD order — Introduction, Method, Results, Discussion — and are used in the social sciences. Both use the same alphanumeric hierarchy.

Should a research paper outline use full sentences or phrases?

A research paper outline can use either, but stay consistent. A phrase outline is faster for quick planning, while a full-sentence outline maps your exact argument and makes drafting easier. Never mix the two within one outline — keep every line parallel in style.

How many main points should a research paper outline have?

A research paper outline should have three to five main points for a standard paper. Fewer than three usually means your thesis is too narrow; more than five often signals an unfocused scope. Each main point becomes a Roman numeral and supports your central thesis directly.

Do I need an outline if I write fast?

Even fast writers benefit from an outline because it prevents structural rewrites later. A 20-minute outline catches gaps in evidence and weak logic before you’ve written 2,000 words around them. It’s the single highest-leverage step in the research writing process.

Start outlining your next paper

A strong outline is the difference between a paper you grind out and one that writes itself. Copy the template that matches your citation style, lock your thesis, sort your evidence under each point, and you’ll have a working structure in under an hour.

Working on something longer than a paper? Explore our guides on how to outline a book and the writing process to take your structure-first approach all the way to a finished manuscript.

Sources: Purdue OWL — Types of Outlines, Scribbr — Research Paper Outline, MLA Style Center, APA Style.