Pillar C · 3 Guides
Convert between imperial fractions and metric millimeters with zero rounding guesswork. Every table uses the exact international 25.4 mm per inch definition alongside real-world craft, postal, and hardware examples.
Convert centimeters to inches visually on a dual ruler. Includes exact formula, fast mental estimates, 1–100 cm lookup table, and calibrated CM/Inch screen tools.
One inch equals exactly 2.54 cm, and a 12-inch ruler equals 30.48 cm. View the complete 1–12 inch chart, US vs UK/AU paper context, and interactive screen ruler.
Convert millimeters to decimal inches and the nearest 1/16 or 1/32 inch ruler fraction. Includes the 1–100 mm lookup chart, hardware sizes, and MM ruler link.