Learn how to use Calculator on Windows 11 for quick math, conversions, and date calculations in just a few steps.

Move over, Calculator. The Messages app can tackle advanced calculations and even convert numbers to different formats.

Body mass index (BMI) is a number based on height and weight that can help estimate whether someone is at a healthy weight. For most adults, BMI is a useful guide, but it doesn’t tell the whole story.

Unlike refusing a straw at a restaurant, it’s difficult to cut down on plastic while strapped unconscious to an operating table. Single-use plastic is facing more scrutiny than it ever has, and the ...