Simple tools, useful answers

Free online tools for everyday calculations and text tasks.

AvyTool provides quick, browser-based tools for common calculations and writing tasks. No account is required for the basic tools.

Calculators

Popular Calculators

Percentage Calculator

Calculate a percentage of a number and understand the formula.

Discount Calculator

Calculate sale prices and savings from a percentage discount.

Age Calculator

Calculate age from a date of birth.

BMI Calculator

Calculate body mass index using height and weight.
Text tools

Useful Text Tools

Word Counter

Count words, characters and sentences in your text.

Character Counter

Count characters with or without spaces.
Learn

Helpful Guides

View all guides →

How to Calculate a Percentage

Learn the basic percentage formula with practical examples.

How to Calculate a Discount

Understand sale price, discount amount and savings.

How Word Counting Works

See how words, characters and sentences can be counted.