A chart is a visual way of organizing information that makes patterns and relationships easier to understand at a glance. Instead of reading through pages of numbers or facts, you can look at a chart and quickly see what's going on.

Charts come in many forms. A bar chart uses rectangles of different heights to compare quantities, like showing which months had the most rainfall. A pie chart divides a circle into slices to show how parts make up a whole, like displaying what fraction of your day you spend sleeping, at school, or playing. A line chart connects points to show how something changes over time, like tracking your height each year as you grow.

Scientists use charts to display their research findings. Doctors use charts to track patients' vital signs. Teachers might use a chart to show class reading progress. Weather forecasters use charts to help us understand complex climate data. When you make a poster for a science fair, adding a chart can transform a table of confusing numbers into something people immediately grasp.

The word can also mean a map used for navigation, especially at sea. Sailors rely on nautical charts showing water depths, coastlines, and hazards.

As a verb, chart means to plan or record something carefully. You might say a ship is charting a course when planning its route.

When something “tops the charts,” it means it's the most popular, like a song reaching number one on music charts that rank the week's bestselling recordings.