21 cm to Inches on a Ruler
21 centimeters is equal to 8.3 inches on a ruler.
The place marked in red shows 8.3 inches, which is equal to 21 centimeters on the ruler.
Try these similar conversions:
21.5 cm to inches on a ruler
Convert 21.5 centimeters to inches and see it on a ruler.
20.5 cm to inches on a ruler
Convert 20.5 centimeters to inches and see it on a ruler.