GCD & LCM Calculator
Free online GCD & LCM Calculator tool.
Mathstable
Input
Enter values for GCD & LCM
Number A
Number B
Result
Run calculation to see results
About GCD & LCM Calculator
Instantly calculate the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers. Useful for simplifying fractions and solving algorithmic problems.
How to Use
1
Enter a comma-separated list of numbers.
2
The calculator instantly computes the GCD and LCM for the entire set.
3
View the results in the output fields.
Real-World Examples
Simplifying Ratios
Find the GCD to simplify the ratio of two screen resolutions.
Input
1920, 1080
Output
GCD: 120 (Simplifies to 16:9)
Best Practices
- Ensure all inputs are positive integers. The tool automatically converts negative numbers to their absolute values for these calculations.
Pro Tips
Formulas: GCD is computed using the Euclidean algorithm. LCM(a, b) = (a * b) / GCD(a, b).
Frequently Asked Questions
Can I input more than two numbers?
Yes, you can input a list of numbers (e.g., `12, 18, 24`), and the tool will iteratively compute the GCD and LCM for the entire set.
Is my data secure?
Absolutely. All processing is done locally in your browser.
Security & Privacy
All recursive algorithm processing occurs directly in your browser's memory.