AI & Prompt Tools · Free tool

Chain-of-Thought Formatter

Wrap any question in a structured Understand → Plan → Execute → Verify CoT template to boost reasoning quality.

Updated April 2026

Wrap any problem in a four-step Chain-of-Thought scaffold to get more reliable reasoning from an LLM.

Problem or question

Formatted CoT prompt

You will solve the following problem using a structured chain of thought.

PROBLEM:
A train leaves Paris at 9am going 120 km/h. Another leaves Lyon at 10am going 140 km/h toward Paris. When do they meet?

Work through these four steps, showing your reasoning for each:

Step 1 - Understand
  Restate the problem in your own words. Identify knowns, unknowns, and any constraints.

Step 2 - Plan
  Outline the approach you will take. List the sub-steps or formulas needed.

Step 3 - Execute
  Carry out the plan. Show every calculation or logical step.

Step 4 - Verify
  Check the answer. Does it match the constraints? Try an alternate method if possible.

Finish with a line that starts with "ANSWER:" followed by the final result.

Step 1

Understand

Step 2

Plan

Step 3

Execute

Step 4

Verify

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What it does

Wrap a question in a Chain-of-Thought scaffold that consistently lifts reasoning quality.

Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.

How to use it

Paste the question.
Review the CoT template.
Copy into your prompt.