How to Calculate Width

Measure the length and width of a region to calculate the area.
••• Hemera Technologies/ Images

A rectangle has two sets of congruent sides. The width is the shorter dimension of a rectangle and the measurement of one of the two longer sides is the length. Width is also used informally to refer to the circumference of a person's waist.

How to Calculate the Width

    Determine which sides of the rectangle are the shorter pair. If it is too close to tell, you will have to measure both.

    Measure one of the two shorter sides. Because a rectangle has a two sets of congruent sides, it does not matter which side you measure. This is the width.

    If you know the area and the length but not the width, you can also find the width by dividing the area by the width. For example, if you know you want a room to be 105 square feet and you know it will be 15 feet long, divide 105 by 15 to get 7 so the width of the room would be 7 feet.

    To find the width of a person, place the start of the measuring tape just above one of the hips. Circle the measuring tape around the person just above the hips to find the measurement.

    Things You'll Need

    • Ruler
    • Calculator (alternate method)
    • Measuring tape (measuring waste)

Related Articles

How to Calculate Perimeter and Area Ratio
How to Find the Area & Width of a Rectangle
How to Find the Volume of a Parallelogram
How to Find the Volume of a Semicircle
How to Find Perimeter
How to Find the Area of Squares
How to Find the Perimeter of a Right Triangle
How to Calculate Volume of a Rectangular Prism
How to Find FWHM
How to Calculate a Circular Area
How to Find the Area of Triangles & Trapezoids
How to Figure the Cubic Yards in a Circle
How to Solve a Hexagon
How to Convert Square Dimensions to Round
How to Find the Circumference of an Octagon
How to Calculate the Diameter of a Circle From a Linear...
How to Find the Area of a Polygon
How to Bisect a Triangle
How to Find Volume in Meters Cubed
How to Convert Millimeters to Meter Squared