Free Online Calculators – Fast, Accurate & Easy to Use

HanCalc — Your All-in-One Online Calculator Hub

Welcome to HanCalc, the easiest place on the internet to find a calculator for almost any task. Whether you are planning a mortgage, tracking your fitness, computing taxes, or working through a math problem, HanCalc gives you fast, accurate and beautifully designed tools — all completely free. Every calculator on this site has been carefully built to be reliable, easy to use and mobile-friendly. You don't need an account, you don't need to install anything, and you don't need to wait — just type in your numbers and get a clear, instant answer.

Why use HanCalc?

There are thousands of calculator sites out there, but most of them are slow, cluttered with ads, or simply inaccurate. HanCalc was built to fix all of that. Our calculators use the same well-tested mathematical formulas as professional financial planners, fitness trainers, accountants and engineers — but presented in a friendly, modern interface that anyone can understand. We focus on three things above everything else: accuracy, speed, and clarity. Whether you're a student, a homeowner, a small business owner, a developer, or simply someone who wants a quick answer to an everyday question, you'll find what you need here.

Financial Calculators You Can Trust

Our financial calculators include the Mortgage Calculator, Loan Calculator, Auto Loan Calculator, Compound Interest Calculator, Retirement Calculator, Investment Calculator, Income Tax Calculator, Sales Tax Calculator, Inflation Calculator and more. They use the standard amortization, future-value, and present-value formulas used by banks and financial institutions worldwide. So whether you want to check what your home loan will really cost, project your retirement savings, or see how inflation will affect your buying power 20 years from now, you can rely on the answer.

Fitness and Health Tools for Real Goals

Health is wealth. Our BMI Calculator, Calorie Calculator, BMR Calculator, Body Fat Calculator, Ideal Weight Calculator, Pace Calculator and Pregnancy Calculator are designed to give you actionable, science-backed estimates that you can use to plan your training, your nutrition or simply track your wellbeing. Each tool clearly explains the formula it uses (such as the Mifflin-St Jeor equation for BMR or the U.S. Navy method for body fat) so you understand exactly where the result comes from.

Math Made Easy

Mathematics doesn't have to be intimidating. Our Scientific Calculator handles trigonometry, logarithms, exponentials and complex expressions. The Fraction Calculator reduces and combines fractions automatically. The Percentage Calculator handles every common percentage problem in one place — "what is 15% of 240", "8 is what percent of 50", and "what is the percent change from 200 to 240". Need random numbers, triangle area, or standard deviation? We've got those too.

Everyday Tools You Didn't Know You Needed

Some of our most-used calculators are also the simplest: the Age Calculator tells you your exact age in years, months and days. The Date Calculator lets you add or subtract days. The Hours Calculator figures out total worked hours including breaks. The GPA Calculator handles any number of courses with weighted credits. And the Password Generator creates strong, secure passwords using cryptographically random values right in your browser — your password is never sent anywhere.

The Zakat Calculator — A Tool With Purpose

One of the most meaningful tools on HanCalc is our Zakat Calculator. Zakat is one of the five pillars of Islam — an obligation upon every eligible Muslim to give 2.5% of their qualifying wealth annually to those in need. Calculating it accurately can be tricky because it involves cash, gold, silver, business assets and investments, minus your liabilities. Our calculator handles all of that in seconds, displays your total wealth, your net wealth, and the exact Zakat amount you owe — with a short explanation of what each input means.

Built for Every Device

HanCalc is fully responsive and works beautifully on phones, tablets, and desktops. There are no popups, no required accounts, and no aggressive ads. Just clean, fast tools you can come back to whenever you need them. Save us as a bookmark — you'll be surprised how often you reach for a calculator during the day.

How To Get The Most Out of HanCalc

Use the search bar at the top of the page to instantly filter calculators by name. Each calculator has its own dedicated page with the form, the formula behind it, and tips for entering the right values. If you're new to a topic, scroll past the calculator and read the helper text — we explain things in plain English. And if there's a calculator you'd love to see added, get in touch — HanCalc is always growing.

Privacy First

All calculations happen directly in your browser. Your numbers never leave your device. We don't track your inputs, store your results, or share anything with third parties. That's the way calculators should be: helpful, fast, and respectful of your privacy.

Start Calculating

Pick a calculator from any of the categories above, or use the search bar to jump directly to the tool you need. Whether it's planning your finances, checking your BMI, splitting a bill, or computing your Zakat — HanCalc is built to help you get a clear answer in seconds. Welcome aboard.