🧮 Free Online Calculators

Free online calculators and converters — BMI, loan, tip, percentage, age, and more. No sign-up, works instantly in your browser.

All tools (18)
⚖️BMI Calculator
Calculate your Body Mass Index and see your weight category. 🏦Loan Calculator
Estimate monthly payments for a loan or mortgage. %Percentage Calculator
Work out percentages quickly — what is X% of Y, and more. 🍽️Tip Calculator
Calculate the tip and split the bill between friends. 🎂Age Calculator
Find your exact age in years, months, and days. 📅Date Difference
Count the days, weeks and months between two dates. 🏷️Discount Calculator
See the sale price and how much you save. 📈Compound Interest
Grow your savings — see the future value with compounding. 📏Unit Converter
Convert length, weight and temperature units. 🔐Password Generator
Create strong, random passwords instantly. 🔳QR Code Generator
Turn any text or link into a QR code. 🔤Word & Character Counter
Count words, characters and sentences in your text. 🎨Color Converter
Convert between HEX and RGB color values. 🎓GPA Calculator
Calculate your grade point average (4.0 scale). 🔥Calorie (TDEE) Calculator
Estimate your daily calorie needs (BMR & TDEE). 🎲Random Number Generator
Generate a random number in any range. ⏳Days Until Calculator
Count down the days until any future date. 🧾Sales Tax Calculator
Add sales tax to a price and see the total.

Simple tools that just work

QuickCalc is a free collection of everyday calculators and converters — from BMI and loan payments to tips, percentages, and unit conversions. No sign-up, no downloads, and everything runs instantly in your browser. Bookmark it and come back whenever you need a quick answer.