HCF & LCM Calculator

Calculate Highest Common Factor and Least Common Multiple

Enter Numbers

Number of values:

Highest Common Factor

Also known as GCD

Least Common Multiple

Smallest divisible integer

About HCF & LCM

Fundamental concepts in number theory with practical applications in mathematics and computer science.

HCF (GCD)

Largest number that divides each input
Used to simplify fractions
Essential for ratio calculations

LCM

Smallest number divisible by all inputs
Used to add/subtract fractions
Key in scheduling problems

HCF and LCM Calculator - Find GCD & Least Common Multiple Instantly

The HCF and LCM Calculator by SiD X Tool is a free, fast, and accurate tool to calculate the Highest Common Factor (HCF) and Least Common Multiple (LCM) of two or more numbers. Whether you're solving a math problem or preparing for a competitive exam, this tool gives you instant results with step-by-step logic.

What is HCF?

HCF (Highest Common Factor), also known as GCD (Greatest Common Divisor), is the largest number that divides all the given numbers exactly.

Example: HCF of 12 and 18 = 6

What is LCM?

LCM (Least Common Multiple) is the smallest number that is a multiple of all the given numbers.

Example: LCM of 4 and 5 = 20

Why Use This HCF & LCM Calculator?

⚡ Instantly calculate HCF and LCM of 2 or more numbers
🧠 Step-by-step internal logic (optional)
✅ Supports large numbers up to 9 digits
📱 Mobile-friendly & fast-loading
🔒 No data is stored or shared — 100% secure

How to Use the HCF and LCM Calculator?

Enter two or more numbers separated by commas (e.g. 12, 24, 36)
Click the “Calculate” button
Get the HCF (GCD) and LCM instantly
Optionally, reset to try different numbers

Who Can Use This Tool?

🎓 Students – For solving number theory, HCF-LCM chapters
🧑‍🏫 Teachers – For quick demos during class
📘 Competitive Aspirants – SSC, Banking, Railway, UPSC
👩‍💼 Professionals – For scheduling, machine timing, unit planning
💻 Developers – For program logic validation

Use Case Examples

📐 HCF of 12, 24, 36 → Result = 12
🔢 LCM of 3, 4, 6 → Result = 12
📊 HCF and LCM of 45, 60 → HCF = 15, LCM = 180

FAQs – Frequently Asked Questions

Q: What is the fastest method to find HCF?
A: Using Euclidean algorithm or this calculator for instant results.
Q: Can I enter more than 2 numbers?
A: Yes, you can enter 2 or more numbers separated by commas.
Q: What’s the difference between HCF and LCM?
A: HCF is the largest common factor; LCM is the smallest common multiple of the numbers.
Q: Is it free?
A: Yes, this HCF & LCM Calculator is 100% free to use.

Conclusion

The HCF and LCM Calculator from SiD X Tool is the easiest way to calculate common factors and multiples of numbers. Whether you're a student, teacher, or exam aspirant, this tool simplifies your calculations and saves time. Try it now and get instant results!