a cut cigar ready to smoke

How to Measure Cigar Size and Choose the Right Case

Picking the right cigar case starts with two simple numbers: length and diameter (expressed as ring gauge). This practical guide shows you how to measure accurately, how to convert between diameter and ring gauge, gives a printable sizing chart you can use right away, and shows which JIMUTO case fits which cigars. Use this as a reference in-store, at shows, or as a lead magnet to capture email signups.

Quick checklist (what you’ll need)

  • A small ruler (inches) or a digital caliper (best).
  • A pen to note measurements.
  • The printable sizing chart below.
  • Your cigars at room temperature (not freshly out of a humidor).

Step 1 — Measure cigar length

  1. Lay the cigar flat on a table.
  2. Measure from the cap (closed end) to the foot (open end) in inches.
  3. Record length to the nearest 1/8" (0.125") or 0.1".
    • Example: a Robusto commonly measures 5.0" or 5.0"×50 (length × ring gauge).

Step 2 — Measure cigar diameter and convert to ring gauge

Option A — Using a caliper (recommended): measure the diameter in inches (e.g., 0.78").
Option B — Using a ruler: measure diameter across the widest point, then convert.

Conversion formulae (simple):

  • ring gauge = diameter (inches) × 64
  • diameter (inches) = ring gauge ÷ 64

Examples:

  • Diameter 0.78" → 0.78 × 64 = 49.92 → about 50 ring gauge.
  • Ring gauge 60 → 60 ÷ 64 = 0.9375" diameter ≈ 0.94".

Step 3 — Allow fit tolerance (don’t make slots too tight)

To avoid crushing or difficult insertion, give each slot a small clearance. Recommended internal slot diameter = cigar diameter + 0.12" (≈3 mm). That cushion prevents pressure marks and makes daily use easy.

Example:

  • 50 RG → diameter ≈ 0.781" → slot internal diameter ≈ 0.901" (0.781 + 0.12).

JIMUTO Cigar Sizing Chart

Common Name

Typical Length

Typical Ring Gauge (RG)

Diameter (in)

Recommended slot dia (in)

Best JIMUTO case

Petit Corona

4.5"

42

0.656

0.776

2-Slot (TCC-TS)

Robusto

5.0"

50

0.781

0.901

2-Slot / 3-Slot (TCC-TS / TCC-CE)

Toro

6.0"

50

0.781

0.901

3-Slot (TCC-CE)

Churchill

7.0"

47–48

0.734–0.75

0.854–0.87

3-Slot (TCC-CE)

Double Corona

7.5"

49–52

0.766–0.812

0.886–0.932

4-Finger (TCC-CG)

Thick Gauge / Gordo

6.0"–7.0"

56–60

0.875–0.9375

0.995–1.0575

4-Finger (TCC-CG)

How to use the chart to pick a JIMUTO case

  1. Measure your cigar length and ring gauge.
  2. Find the row with the nearest ring gauge/diameter.
  3. Check the recommended slot diameter — if your cigar diameter ≤ recommended slot diameter, the case will fit comfortably.
  4. Choose TCC-TS for pocketable 1–2 cigar travel, TCC-CE for everyday 3-cigar balance, or TCC-CG for larger gauges/4+ capacity and presentation.

Product links:

FAQs

Q: What if my cigar is right at the edge of the slot size?
A: Choose the next larger capacity or case (e.g., 3-slot or 4-finger) to avoid pressure marks.

Q: Do leather cases stretch?
A: Leather can relax slightly over time, but don’t rely on stretching — choose correct fit from day one.

Q: Can I use this chart for cutters or humidors?
A: The ring gauge/diameter conversions are universally useful, but cutter and humidor fit depends on different internal geometries.

Ready to choose the right leather cigar case for your favorite taste

Check JIMUTO Cigar Sizing Chart and measure your cigars today — then choose the perfect case:

For  Ultimate Guide to Leather Cigar Cases, please read this:
The Ultimate Guide to Leather Cigar Cases
Back to blog