Overview
18x5 • 7.1" × 2"
18x5
7.1 inch length • 2 inch diameter
Penis Category:
above average
Cock L/D ratio: 3.6
Cock Volume: ~353 mL
Cock Cross-section: 19.63 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
5 cm
2 inch
Category: slim
Real-world examples
• Mandarin ≈ 5–5.5 cm Ø• Baseball ≈ 7.3 cm Ø (bigger)
Circumference (≈ π × diameter)
15.7 cm
6.18 inch
Fit-critical value for sleeves & rings.
Surface & volume
Penis Surface index
~283 cm²
Penis Volume (cylinder)
~353 mL
Penis Mass (≈ water)
~353 g
Condom sizing guide
Recommended nominal width
79 mm
XXL / Wide
Closest catalog size: 72 mm (a bit tighter (-7 mm))
Also try (± stretch)
70 mm
71 mm
Stretch window (comfort)
• Target girth: 15.7 cm
• Comfortable range (≈ −8% … +8%): 14.4–17 cm
• As nominal width: 72–85 mm
• Comfortable range (≈ −8% … +8%): 14.4–17 cm
• As nominal width: 72–85 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: 3.6
• Status: above average
• Inch readout: 7.1" × 2"
• Status: above average
• Inch readout: 7.1" × 2"
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)