A cigar's ring gauge is measured in 64ths of an inch.
The cigar ring gauge tool is another way for cigar lovers to learn about the cigars they enjoy. Have you ever seen a cigar online or in a catalog and looked at the dimensions printed on the page but weren't sure that the cigar would fall into your "sweet spot" of the sizes you prefer? And cigar ring gauges are not set in stone — that is a Robusto can be anywhere from a 49 to a 54 ring gauge (or RG), depending on who makes it and what name the manufacturer gives it. That’s where a cigar ring gauge tool can help anyone from an experienced smoker to a beginner smoker.
Ring gauge is a critical part of the smoking experience: larger and thicker cigar ring gauges tend to burn cooler; thinner ring gauges can burn hot, if you draw deeper on the cigar. But the biggest difference in cigar ring gauges is flavor: smaller cigars contain less filler tobaccos, allowing you to and strength from the wrapper leaf; larger ring gauge cigars display more of the flavors that the binder and filler tobaccos have to offer. This is where experimenting pays off: you may say you only smoke Toros, but you might find that you love a heartier blend’s Churchill - but enjoy the profile of another brand’s Rothschild just as much. These differences may even help you along the way when it come to making cigar recommendations or cigar pairings.
Cigar lengths and ring gauges are represented by (length) x (ring gauge). In the case of a 7 x 48 Churchill, the cigar’s length is 7 inches; the ring gauge is represented as fractions of an inch, where an inch is 64/64ths. Here, this Churchill is 48/64ths of 1 inch. The inch is standard measure for cigars — meaning It's rare to see cigar ring gauge in mm, even though most countries use the metric system. As for big ring gauge cigars, plenty of them go bigger than 64; some are as large as 80RG, which is about 1 3/8 inches in diameter.