Inch Conversions

About Inches

The inch is a unit of length in the imperial and US customary systems, equal to 1/12 of a foot or exactly 2.54 centimeters.

Common Uses

• Screen Sizes: TV, monitor, and smartphone displays (measured diagonally)
• Manufacturing: Precision measurements and engineering
• Clothing: Inseam, waist, and other garment measurements
• Weather: Rainfall and snowfall measurements in the US

Conversions

• 1 inch = 2.54 centimeters (exact)
• 1 inch = 0.0254 meters
• 12 inches = 1 foot
• 36 inches = 1 yard

Practical Examples

• A standard US quarter coin is about 1 inch in diameter
• A typical smartphone is about 6 inches tall
• A standard sheet of paper is 8.5 × 11 inches
• A credit card is about 3.4 inches wide

Symbol

The inch is commonly abbreviated as "in" or represented by the double prime symbol (″).