Free Online Calculators

Instant results. No signup. Mobile-friendly. 100% free.

🏠 Mortgage Calculator Calculate monthly payments, total interest, and amortization schedule for your home loan. Finance 💰 Loan Calculator Estimate monthly payments and total cost for personal loans, auto loans, and more. Finance 📈 Compound Interest See how your savings grow over time with compound interest and regular contributions. Finance 💵 Salary Calculator Convert between hourly, daily, weekly, biweekly, monthly, and annual salary. Finance 🥂 Tip Calculator Calculate tip amount and split the bill between multiple people. Finance 💹 Investment Return Calculate ROI, annualized returns, and compare investment performance. Finance % Percentage Calculator Calculate percentages, percentage change, what percent one number is of another. Math ½ Fraction Calculator Add, subtract, multiply, and divide fractions with step-by-step solutions. Math 📏 Unit Converter Convert between units of length, weight, temperature, volume, area, and more. Math 🎓 Scientific Calculator Full scientific calculator with trig, logarithms, exponents, and memory functions. Math ⚖ BMI Calculator Calculate your Body Mass Index and see which category you fall into. Health 🍚 Calorie Calculator Estimate daily calorie needs based on age, weight, height, and activity level. Health 🎂 Age Calculator Calculate your exact age in years, months, days, hours, and minutes. Date & Time 📅 Date Difference Find the number of days, weeks, or months between two dates. Date & Time 📊 Profit Margin Calculate gross margin, net margin, and markup from cost and revenue. Business 🏫 GPA Calculator Calculate your semester and cumulative GPA on a 4.0 scale. Business

Why Use CalcHub?

CalcHub provides free, fast, and accurate online calculators for finance, math, health, and everyday needs. Every calculator runs instantly in your browser — no downloads, no signups, no waiting.

Features

Popular Calculators

Our most-used tools include the mortgage calculator for home buyers, the compound interest calculator for investors, and the percentage calculator for quick math. Each calculator includes detailed explanations, formulas, and examples to help you understand the results.