14 browser-based tools

Free Online Calculators

Solve everyday, financial, measurement, and school math with fast calculators that explain each result.

All calculators

14 tools

Find your exact age in years, months, and days from any date of birth.

Work out the tip, total, and split per person in seconds.

Solve any right triangle: enter two sides and get the third.

Decimal square root plus simplified radical form.

See your savings and final price after any percent off.

Volume in cubic feet from any dimensions and units.

Solve any quadratic and get the roots, discriminant, and vertex.

Slope, line equation, and angle between any two points.

Divide two numbers for the quotient, remainder, and decimal.

Convert any number to and from scientific notation.

Average of any list of numbers, plus sum and median.

Dividend income and yield from any holding.

Solve for CPM, cost, or impressions in an ad campaign.

Round any number to the nearest ten, hundred, or decimal.

9 examples

Each calculator runs in your browser and shows the useful intermediate values, not only the final answer.

Use the worked examples below for common searches, or open a calculator when you need different inputs.