A calculator in scientific mode showing a conversion from astronomical units to light years.

Different modes for different needs

Find solutions in the Calculator app, using basic, scientific, or programmer modes. Or switch to Math Notes to solve expressions or use variables in the Notes app.

Choose the right mode in Calculator on Mac

A calculator in scientific mode with conversion turned on.

Convert easily

Miles to millimeters? Yen to euros? Transform length, weight, power, pressure, speed, currency, and more with a handy in-app unit conversion mode.

Convert units or currency in Calculator on Mac

To explore the Calculator User Guide, click Table of Contents at the top of the page, or enter a word or phrase in the search field.

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