Free Online Calculators

Fast, accurate, and easy-to-use calculators for finance, health, fitness, math, and more. No signup required. 100% free.

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Calculator Categories

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Finance

Mortgage, loan, investment, ROI, compound interest, and retirement calculators.

50+ calculators ❤️

Health & Fitness

BMI, BMR, body fat, calorie, macro, ideal weight, and hydration calculators.

35+ calculators ➗

Math

Percentage, fraction, algebra, geometry, statistics, and scientific calculators.

39+ calculators 🔄

Conversion

Unit converter for length, weight, temperature, volume, currency, and more.

Universal Converter ⚡

Physics

Force, energy, momentum, velocity, acceleration, and other physics calculators.

17+ calculators 🧪

Chemistry

Molecular weight, pH, molarity, dilution, and chemical equation calculators.

8 calculators 🏗️

Construction

Material estimator, concrete, paint, flooring, roofing, and cost calculators.

20+ calculators 📅

Date & Time

Age, date difference, business days, time zone, and calendar calculators.

8 calculators 🚗

Automotive

Fuel economy, car loan, lease, depreciation, and maintenance calculators.

3 calculators 📊

Business

Profit margin, break-even, revenue, cash flow, and business valuation tools.

4 calculators 🎓

Education

GPA, grade, student loan, scholarship, and study time calculators.

4 calculators 🌟

Lifestyle

Tip, discount, shopping, budget, split bill, and savings calculators.

2 calculators

Why Choose TopCalculator.net?

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Lightning Fast

Get instant results with our optimized calculators. No waiting, no delays.

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Accurate Results

All calculations are verified for accuracy using industry-standard formulas.

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Mobile Friendly

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

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100% Free

No subscription, no hidden fees. All calculators are completely free to use.

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Privacy First

Your data stays in your browser. We don't store or share your calculations.

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Clean Design

Simple, intuitive interface that gets out of your way and lets you calculate.