# Text Difference

> Compare two texts and identify added or removed lines.

Page: https://freecalculator.tech/tools/text-difference

## Formula

Uses a longest-common-subsequence line comparison. Added lines use + and removed lines use −, so meaning never depends on color alone.

- Uses a longest-common-subsequence line comparison. Added lines use + and removed lines use −, so meaning never depends on color alone.
- Inputs used: Original text, Changed text.

## Worked example: Compare two revisions

See one removed line and one added line with clear symbols.
1. Start with Original text: First line Old line, Changed text: First line New line.
2. Apply the method: Uses a longest-common-subsequence line comparison. Added lines use + and removed lines use −, so meaning never depends on color alone.
3. See one removed line and one added line with clear symbols.

## Common questions

### Is my input uploaded?

No. Your input is processed locally in your browser and is not sent to the server or included in analytics.

### Can I use the text difference output elsewhere?

Yes. Use Copy, or Download when available, after reviewing the output.

### How do I use the Text Difference?

Enter the required values for Original text, Changed text. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the Text Difference use?

Uses a longest-common-subsequence line comparison. Added lines use + and removed lines use −, so meaning never depends on color alone. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.

### Can the Text Difference be used for exact decisions?

Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.

## Limitations and assumptions

- The result depends on the values you enter for this text difference; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Cite this page

- APA: Free Calculator. (n.d.). Text Difference. https://freecalculator.tech/tools/text-difference
- MLA: "Text Difference." Free Calculator, https://freecalculator.tech/tools/text-difference.
- Link: Text Difference — Free Calculator, https://freecalculator.tech/tools/text-difference