100 centimeters Ruler — Actual Size
Use this ruler to visualize and measure exactly 100 centimeters on your screen. After calibrating with a credit card or reference object, the ruler above displays 100 cm at its true physical size on any device — phone, tablet, or desktop.
Unit Conversions for 100 centimeters
100.00
centimeters
1000.0
millimeters
39.37
inches
How to Measure 100 centimeters
- Open this page on the device you want to measure with and use the ruler displayed above.
- Calibrate by placing a credit card on the screen and adjusting the slider until the outline matches the card. This takes about 10 seconds.
- Place the object you want to measure against the ruler. The markings show centimeters, millimeters, and inches, so you can read 100 cm directly.
- Your calibration is saved in the browser, so the ruler remains accurate on your next visit.
About This Measurement
100 centimeters equals 1000.0 millimeters or 39.37 inches. One centimeter is one-hundredth of a meter, or about 0.394 inches. The centimeter is part of the metric system used by most countries worldwide.