Overview
18x4 • 7.1" × 1.6"
18x4
7.1 inch length • 1.6 inch diameter
Penis Category:
above average
Cock L/D ratio: 4.5
Cock Volume: ~226 mL
Cock Cross-section: 12.57 cm²
Relative scales
Length (vs. 10–22 cm typical)
Diameter (vs. 4.0–7.5 cm typical)
Girth (vs. 11.5–23 cm typical)
Core metrics
Length
18 cm
7.1 inch
Category: medium
Real-world examples
• Banana ≈ 18–20 cm• 20 cm school ruler (metric) — slightly longer
• Tablet stylus ≈ 17–19 cm
• Desk thermometer ≈ 18–20 cm
• 18 cm ≈ 7.1"
Diameter
4 cm
1.6 inch
Category: slim
Real-world examples
• Chicken egg width ≈ 4.2–4.5 cm Ø• Small jar lid ≈ 4–5 cm Ø
Circumference (≈ π × diameter)
12.6 cm
4.96 inch
Fit-critical value for sleeves & rings.
Surface & volume
Penis Surface index
~226 cm²
Penis Volume (cylinder)
~226 mL
Penis Mass (≈ water)
~226 g
Condom sizing guide
Recommended nominal width
63 mm
XL
Closest catalog size: 63 mm (spot on)
Also try (± stretch)
61 mm
62 mm
64 mm
65 mm
Stretch window (comfort)
• Target girth: 12.6 cm
• Comfortable range (≈ −8% … +8%): 11.6–13.6 cm
• As nominal width: 58–68 mm
• Comfortable range (≈ −8% … +8%): 11.6–13.6 cm
• As nominal width: 58–68 mm
Materials and brands vary — if in between, start with the closest and adjust.
Condom length tip
Standard length works for most (≈ 185–190 mm). Width map (45–72 mm)
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
Highlighted: need (computed) and best (closest available).
At a glance
Profile
• L/D ratio: 4.5
• Status: above average
• Inch readout: 7.1" × 1.6"
• Status: above average
• Inch readout: 7.1" × 1.6"
Handy links
Fun fact
Animal comparison
Target length: 18 cm (≈ 7.1" )
🐀 Rat (small)
Body ~18–25 cm (no tail)
🐀 Rat (small)
Body ~18–25 cm (no tail)