Overview
13x7 • 5.1" × 2.8"
13x7
5.1 inch length • 2.8 inch diameter
Penis Category:
large
Cock L/D ratio: 1.86
Cock Volume: ~500 mL
Cock Cross-section: 38.48 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
13 cm
5.1 inch
Category: medium
Real-world examples
• Big smartphone height ≈ 15–16 cm (larger)• A6 short edge ≈ 10.5 cm
• Remote control top section ≈ 12–13 cm
• Large spoon overall ≈ 12–13 cm
Diameter
7 cm
2.8 inch
Category: thick
Real-world examples
• Jar lid (medium) ≈ 7.3–7.6 cm Ø• CD inner ring (outer) ≈ 7.6 cm Ø
Circumference (≈ π × diameter)
22 cm
8.66 inch
Fit-critical value for sleeves & rings.
Surface & volume
Penis Surface index
~286 cm²
Penis Volume (cylinder)
~500 mL
Penis Mass (≈ water)
~500 g
Condom sizing guide
Recommended nominal width
110 mm
XXL / Wide
Closest catalog size: 72 mm (a bit tighter (-38 mm))
Also try (± stretch)
70 mm
71 mm
Stretch window (comfort)
• Target girth: 22 cm
• Comfortable range (≈ −8% … +8%): 20.2–23.8 cm
• As nominal width: 101–119 mm
• Comfortable range (≈ −8% … +8%): 20.2–23.8 cm
• As nominal width: 101–119 mm
Materials and brands vary — if in between, start with the closest and adjust.
Condom length tip
Short/standard length is fine (≈ 180 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: 1.86
• Status: large
• Inch readout: 5.1" × 2.8"
• Status: large
• Inch readout: 5.1" × 2.8"
Handy links
Fun fact
Animal comparison
Target length: 13 cm (≈ 5.1" )
🐹 Dwarf hamster
Length ~9–12 cm
🐹 Dwarf hamster
Length ~9–12 cm