The ring gauge number measures the cigar’s diameter in sixty-fourths of an inch. A 50-ring cigar is 50/64 of an inch across. A 60-ring cigar is 60/64 of an inch across. The higher the number, the thicker the cigar.

Ring gauge is only one part of cigar size. Length is measured in inches, so a cigar listed as 6 × 52 is six inches long with a 52 ring gauge.

How cigar ring gauge is measured

The ring-gauge system divides one inch into 64 equal parts. You can convert the gauge to inches by dividing it by 64, or to millimeters by multiplying it by 0.4.

Ring gauge	Fraction of an inch	Inches	Millimeters
38	38/64	0.59	15.1
42	42/64	0.66	16.7
46	46/64	0.72	18.3
50	50/64	0.78	19.8
52	52/64	0.81	20.6
54	54/64	0.84	21.4
60	60/64	0.94	23.8

You don’t need to memorize the conversions. Remember that the ring number represents thickness, not circumference, strength, or quality.

Ring gauge in millimeters

One ring is 1/64 of an inch, or about 0.4 millimeters. Multiply the ring gauge by 0.4 for a close estimate of the diameter in millimeters: a 50 ring is about 20 mm across.

Cuban cigars are sized with a metric length and a standard ring gauge. Habanos lists the Cohiba Robustos as 124 mm long with a 50 ring gauge, which is just under 5 inches. Some shops, mostly in Europe, also give the diameter in millimeters. To turn millimeters back into a ring gauge, multiply by 2.5, so 19.8 mm is a 50 ring. For length, one inch is 25.4 mm, so a 6 inch Toro is about 152 mm long.

How to read cigar dimensions

Cigar dimensions are normally written as length by ring gauge:

• 5 × 50: five inches long and 50/64 of an inch in diameter.
• 6 × 52: six inches long and 52/64 of an inch in diameter.
• 7 × 47: seven inches long and 47/64 of an inch in diameter.

The dimensions are more dependable than the size name. One brand’s Toro may be 6 × 50, while another may use 6 × 52 or 6¼ × 54. Both can be sold as Toros.

Common cigar ring gauges

Ring gauge	Common shapes	What to expect
Under 40	Lancero, Panetela	Slender and focused. The wrapper does more of the talking, and construction has to be precise.
40 to 47	Petit Corona, Corona, Lonsdale	The traditional range. Balanced, and changes in the wrapper are easy to taste.
48 to 54	Robusto, Toro, Churchill	The comfortable middle, with room for a complex filler blend.
56 to 60	Gordo, Grande	More filler tobacco and a wider mouthfeel.
Above 60	Oversized formats, from 64 up to 70 and beyond	Needs a wide cutter, an even light and time for a longer smoke.

Shop by ring gauge: 38 · 42 · 44 · 46 · 48 · 50 · 52 · 54 · 56 · 58 · 60 · 64 · 70

Many cutters top out around a 60 ring. For bigger cigars, use one built for them, like the Vertigo Big Boy (up to 64) or the XIKAR Xi80 and Palio Basta 80 (both up to 80).

Does ring gauge change cigar flavor?

Yes. A cigar is a blend of wrapper, binder, and filler. Changing the diameter changes how much filler can fit inside and alters the proportion of the outer leaves to the filler blend.

A thinner version often gives the wrapper and binder a larger role relative to the filler. A thicker version gives the blender more room for filler leaves and can shift the balance toward the internal blend. The same cigar line in Lancero, Robusto, and Gordo sizes may therefore taste noticeably different.

This doesn’t mean thin cigars are always stronger in flavor or thick cigars are always smoother. The blender may adjust the filler recipe for each vitola. Construction, tobacco, smoking pace, and shape still matter.

Does a larger ring gauge burn cooler?

A larger ring gauge generally has more burning tobacco spread across a wider foot and can feel cooler when smoked patiently. A thin cigar concentrates the ember into a smaller diameter and can become hot when puffed too frequently.

Pace can override the size advantage. Any cigar will become hot and bitter if you smoke it aggressively. A thick cigar also needs a complete, even light across its wider foot. Use our guides to lighting a cigar evenly and maintaining the right smoking pace.

Does a bigger ring gauge mean a stronger cigar?

No. Ring gauge doesn’t tell you the blend’s nicotine strength. A 38-ring Lancero can be full strength, and a 60-ring Gordo can be mild.

A larger cigar contains more tobacco overall, but the type and proportion of that tobacco determine the cigar’s character. Check the maker’s strength description instead of using size as a shortcut. Our cigar strength vs. flavor guide explains the difference between nicotine impact, body, and tasting notes.

How ring gauge affects smoking time

Length usually has the clearest connection to smoking time, but ring gauge matters too. A thick cigar contains more tobacco and often burns longer than a thin cigar of the same length.

Don’t choose by dimensions alone when your schedule is limited. Tobacco density, construction, pace, and outdoor conditions change the total time. Treat published smoking times as estimates.

Thin vs. thick cigars

Characteristic	Thinner ring gauge	Thicker ring gauge
Feel	Slender and focused	Broader mouthfeel
Blend proportion	More wrapper and binder relative to filler	More room for filler leaves
Temperature	Can heat quickly when rushed	Often cooler when smoked patiently
Lighting	Smaller foot to ignite	Wider foot requires an even light
Cutting	Fits most cutters easily	May require a large-capacity cutter

Neither is better. My own go-to is a 50 ring, but the useful question is whether the size supports the experience you want.

What ring gauge is best for a beginner?

A ring gauge around 46 to 52 is a practical starting range. It’s comfortable for many smokers, easy to cut with standard tools, and common in Robusto and Toro formats.

A 5 × 50 Robusto is especially approachable when you want a manageable smoking time. A 6 × 50 or 6 × 52 Toro gives the blend more time to develop. Choose the strength separately from the size.

For every common size side by side, from the Small Panatela to the Gigante, see our cigar size chart.

The practical answer

Ring gauge is the cigar’s diameter measured in sixty-fourths of an inch. A higher number means a thicker cigar. Ring gauge can change blend proportions, temperature, mouthfeel, and smoking time, but it doesn’t tell you whether the cigar is strong or high quality.