iCalculator™ - Free Online Tax, Salary, Mortgage, and Business Calculators

iCalculator™ is a specialist site providing free online calculators with supporting articles and guides, helping individuals, businesses, and students with financial and educational calculations. We offer:

1. The world's largest selection of salary and tax calculators, covering multiple countries.
2. Comprehensive educational materials for Maths, Physics, Chemistry, and Engineering, including tutorials, lessons, and practice tests.
3. Over 150,000 calculators for instant, free access.

Popular Calculators

• Australia Salary Calculator 2025
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• Global Tax Calculators

Find the Calculator You Need

Choose from 150,000+ free online calculators across tax, salary, mortgage, and business finance.

Find a Tax Calculator Mortgage Calculators

Calculator Categories

• Tax Calculators
• Finance Calculators
• Car Finance Calculators
• Mortgage Calculators
• Math Calculators
• Physics Calculators
• Chemistry Calculators
• Human Resource Calculators
• Engineering Calculators
• Health Calculators
• Sports Calculators
• Logistics Calculators
• Ratio Calculators
• Mortgage Calculators

About iCalculator™

The calculators provided on this website are free to use, and while we strive for 100% accuracy, we encourage feedback. iCalculator™ supports a broad range of free-to-use online calculators, helping individuals and businesses make informed decisions.

Have a Feature Request or Found a Bug?

If you:

• Spot a mistake or a bug
• Have a new feature request
• Want a custom-built calculator

Please contact us. Your support helps us keep these tools free.