8+ Types of Calculators with HTML, CSS, and JavaScript with Source Code

Introduction

Creating calculators using HTML, CSS, and JavaScript is a great way to improve your coding skills. Whether you're building a simple calculator or a more advanced financial tool, these projects can help you learn new techniques while solving real-world problems. In this blog, we’ll cover 8+ types of calculators you can create. Each calculator includes source code to help you start coding right away.

1. Simple Calculator

A simple calculator performs basic operations like addition, subtraction, multiplication, and division. It’s perfect for learning how to handle user inputs and perform calculations.

Features:

• Add, subtract, multiply, and divide numbers.
• Clear button to reset inputs.

2. BMI Calculator

A Body Mass Index (BMI) calculator helps users check if they are underweight, normal, or overweight.

Features:

• Input weight (kg) and height (m).
• Displays BMI and category (e.g., normal, overweight).

3. Age Calculator

An age calculator finds the age based on the user’s date of birth.

Features:

• Input birthdate.
• Displays the exact age in years, months, and days.

4. Tip Calculator

A tip calculator helps users calculate tips based on the bill amount and percentage.

Features:

• Input bill amount and tip percentage.
• Displays the tip amount and total bill.

5. Tax Calculator

A tax calculator computes the tax amount based on the income and tax rate.

Features:

• Input income and tax percentage.
• Displays the tax amount and net income.

6. Salary Calculator

A salary calculator shows monthly and yearly salary based on hourly rates and work hours.

Features:

• Input hourly rate and work hours.
• Displays monthly and yearly earnings.

7. Income Calculator

An income calculator helps users estimate their yearly income from different sources.

Features:

• Input multiple income sources.
• Calculates total annual income.

8. Loan Calculator

A loan calculator calculates monthly installments based on loan amount, interest rate, and tenure.

Features:

• Input loan amount, interest rate, and duration.
• Displays monthly EMI.

9. Financial Calculator

A financial calculator provides tools for savings, loan, investments, and mortgage calculations.

Features:

• Input initial amount, interest rate, and time.
• Displays total amount with interest.

Conclusion

These 8+ types of calculators are simple yet powerful tools that you can build with HTML, CSS, and JavaScript. They not only help you practice coding but also create functional projects for real-life use. Start with the simple calculator and gradually try the more advanced ones like the loan or financial calculator.

Which calculator will you create first? Let us know in the comments!