There are 208 free web tools on the website

DotsBook Online Free ToolBox

DotsBook is a collection of useful online tools essential for users, which can be used immediately on the browser without account registration! Collection of handcrafted online tools for development!

bmi calculator

bmi calculator

Free online BMI calculator to easily calculate your body mass index. Whether you are checking your overweight status or determining your ideal BMI range, our tool provides an accurate calculation based on your height and weight. It is perfect for everyone and is the go-to tool to know your body mass index!

Basic Calculator

Basic Calculator

Free online basic calculator for all simple calculations. Whether you need to add, subtract, multiply or divide, our simple and friendly interface allows you to calculate quickly and easily. Calculator, simplify your math tasks!

Age Calculator

Age Calculator

Free Age Calculator, quickly calculate your age based on your date of birth. Whether you are calculating your age for personal reasons or determining age eligibility, our online tool provides accurate results in seconds!

Standard Deviation

Standard Deviation

Get accurate results quickly with this free online standard deviation calculator. Calculate population and sample standard deviations, learn key formulas, and explore examples. Easily calculate variance and standard deviation in Excel or Python with step-by-step guides.

Simplifying Fractions Calculator

Simplifying Fractions Calculator

Use our Simplifying Fractions Calculator to easily simplify, reduce, and convert fractions. Whether you need to simplify algebraic expressions, multiply or divide fractions, or convert fractions to their simplest form, our tool can help you quickly and accurately. Perfect for various mathematical calculations, including simplest form calculators, algebra simplifiers, and fraction converters. Try it online now and simplify your math calculations effortlessly!

Simple Interest Calculator

Simple Interest Calculator

Simple Interest Calculator Calculate principal and interest easily. Use our accurate interest calculation formula to calculate the interest you will receive or owe. Whether you are calculating savings, loan interest or investment returns, our calculator tool provides fast and accurate results. Perfect for personal finance, bank loans and interest rate calculation comparisons.

Compound Interest Calculator

Compound Interest Calculator

Use our free online Compound Interest Calculator to easily calculate the future value of your investments or savings. Simply enter your principal, interest rate, time period, and see how your money grows. Perfect for planning savings, investments, and retirement goals. Get accurate projections in seconds!

Scientific Calculator

Scientific Calculator

Free online scientific calculator that supports various complex and advanced calculations, including square root calculations, logarithm calculations, trigonometric functions, and angle calculations. It supports scientific calculations, advanced calculations, and function calculations, making mathematical calculations simple and fast!