Free Online Calculators

Comprehensive collection of 150+ calculators for every need - Finance, Health, Math, Science & More

💰 Financial Calculators

❤️ Health & Fitness

BMI Calculator Calorie Calculator Body Fat Calculator Ideal Weight Calculator BMR Calculator Pregnancy Calculator Pace Calculator Macro Calculator Body Type Calculator +22 more health tools →

🔢 Math & Science

Scientific Calculator Percentage Calculator Fraction Calculator Geometry Calculator Algebra Calculator Statistics Calculator Calculus Calculator Unit Converter Volume Calculator +35 more math tools →

📅 Date & Time

Date Calculator Time Calculator Age Calculator Time Zone Calculator Days Between Calculator Business Days Calculator Date Difference Calculator Week Number Calculator Stopwatch +15 more date tools →

🔄 Conversion Tools

Currency Converter Unit Converter Temperature Converter Length Converter Weight Converter Volume Converter Area Converter Speed Converter Time Converter +25 more converters →

⚡ Specialized Tools

Password Generator Color Converter BMI Percentile Calculator Grade Calculator GPA Calculator Loan Comparison Calculator Mortgage Comparison Calculator Investment Comparison Calculator Retirement Comparison Calculator +30 more specialized tools →

🔥 Most Popular Calculators

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Mortgage Calculator

Calculate your home loan payments and amortization schedule

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BMI Calculator

Check your Body Mass Index and healthy weight range

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Loan Calculator

Calculate loan payments and total interest costs

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Date Calculator

Calculate days between dates and add/subtract days

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Compound Interest

See how your investments grow over time

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Calorie Calculator

Calculate your daily calorie needs for weight goals

Why Choose CalculatMaster?

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Multi-Language

Available in English, Italian, Finnish, Danish, Dutch, and Norwegian

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Mobile Friendly

Works perfectly on all devices - desktop, tablet, and mobile

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Fast & Accurate

Instant calculations with precise results every time

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Privacy First

Your data stays on your device - no server storage

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150+ Tools

Comprehensive collection covering all calculation needs

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Completely Free

No hidden costs, no registration required