---
title: "GCD & LCM Calculator | Integer Math Tool | XTRAW Tools"
description: "Calculate greatest common divisor and least common multiple for integers with a free browser-based GCD and LCM calculator."
url: "https://xtraw.com/tools/gcd-lcm-calculator"
date: "2026-07-06T03:48:37+00:00"
language: "en-GB"
---

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  new

 [Back to: Math Calculators](https://xtraw.com/tools/calculators/math-calculators "Math Calculators")

# GCD & LCM Calculator

 Calculate greatest common divisor and least common multiple for integers. Use this free browser-based gcd & lcm calculator from XTRAW Tools.

 **GCD & LCM Calculator** helps you calculate greatest common divisor and least common multiple for integers. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step.

## How to Use the GCD & LCM Calculator

1. Enter the required calculator inputs shown in the form.
2. Review the numbers, expression, equation, data set, ratio, date, or measurement assumptions.
3. Run the calculator, then adjust one input at a time to compare scenarios or check your work.

## What This Calculator Helps With

Calculate greatest common divisor and least common multiple for integers. It is designed for students, teachers, homeschool users, and anyone solving integer math problems who want a fast, browser-based result before relying on an instructor, textbook, advisor, professional source, healthcare provider, or specialist.

- Number 1: 24
- Number 2: 36

## Common Uses

People use this calculator when they need a quick way to solve math, summarize data, check formulas, compare values, estimate timing, or verify measurement-based results.

- **Math Solving:** Solve school, study, work, or everyday math problems using clear numeric inputs.
- **Measurement:** Use measurements, values, ratios, data sets, or equations to calculate a specific result.

## Formula or Method

GCD uses the Euclidean algorithm; LCM(a,b) = |a×b| / GCD(a,b).

## Example

**Example inputs:** Number 1: 24; Number 2: 36

**Example result:** Using the default inputs, GCD is 12 and LCM is 72.

## Related Tools

- [Least Common Multiple Calculator](https://xtraw.com/tools/least-common-multiple-calculator)
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- [Ratio Calculator](https://xtraw.com/tools/ratio-calculator)

## GCD & LCM Calculator FAQ

### Is the GCD & LCM Calculator free?

Yes. This calculator is free to use on XTRAW Tools.

### Do I need to create an account?

No. XTRAW tools are designed for browser-based use without requiring an account.

### Are the results exact?

Results may be estimates depending on the inputs, formula, rounding, and purpose of the calculator. Always verify important results before relying on them.

**Disclaimer:** This calculator is provided for general informational and convenience purposes only. It is not legal, financial, medical, pregnancy, fertility, engineering, academic, safety, or professional advice. Always verify important results with a qualified professional, instructor, authoritative source, or appropriate specialist before making decisions.

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