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FREE ONLINE CALCULATORS

Free Online
Calculators

Calculate right here, or find a tool for shopping, percentages, numbers, and everyday life. Clear results, useful examples, and no account needed.

Free to use No account needed Inputs stay in your browser

CALCULATE RIGHT HERE

Basic Calculator

Choose your calculation and enter the values. Your inputs stay in this browser.

Your result will appear here.

Read the formula, examples, and limitations below. Approximate decimals use standard browser arithmetic; exact fractions are shown separately.

THE TOOL DIRECTORY

Find the right calculator

Browse by task. Each tool includes a formula and a worked example.

Shopping & savings

Compare prices and understand what you save.

Math & percentages

Turn everyday numbers into clear answers.

  • Percentage CalculatorAvailable Oct 5

    Calculate a percentage, a share, or percentage change.

  • Basic CalculatorAvailable Oct 7

    Calculate expressions with parentheses, powers, and square roots.

  • Fraction CalculatorAvailable Oct 8

    Work with exact fractions, mixed numbers, and decimals.

  • Ratio CalculatorAvailable Oct 9

    Find a missing ratio value or scale both parts.

  • Number & Unit CalculatorsAvailable Oct 12

    Convert units; find averages, statistics, rounded decimals, GCD, LCM, powers and roots.

Bills & everyday life

Make shared costs easier to work out.

  • Tip & Split Bill CalculatorAvailable Oct 6

    Work out a tip and split the bill down to the last cent.

  • Age CalculatorAvailable Oct 10

    Find calendar age and total elapsed days on a chosen date.

  • Date CalculatorAvailable Oct 11

    Count days between dates, or add and subtract time.

  • Multilingual Senior CalculatorAvailable Oct 4

    Large buttons and spoken digits and answers in twelve languages.

UNDERSTAND THE ANSWER

A number is useful. A clear explanation is better.

01

Choose your task

Start with the question you want to answer: a sale price, a percentage change, or a shared bill.

02

See the breakdown

Our tools show the result with useful details, such as savings, the change amount, or individual payments.

03

Check the example

Read the formula, worked example, and rounding notes on each tool page. Found an issue? Tell us.

New calculators are being added one at a time. Browse the tools available today and see the dates for the next releases above.