Is 4 inches normal? (10.2 cm)
Yes, 4 inches is normal. Erect, 4 inches is longer than 3.7% of men according to the Veale et al. meta-analysis (BJU International, 2015), and is below average.
The shaded area is the share of men shorter than 4 inches. Data: Veale et al. 2015, clinically measured erect length (mean 13.12 cm, SD 1.66 cm).
Condom size depends on girth, not length. The calculator gives your full percentile and exact width.
Am I measuring correctly?
Clinical data uses bone-pressed erect length (BPEL): a rigid ruler on top, pressed into the pubic bone, straight to the tip. Measuring without pressing can miss 1 to 3 cm, especially with more pubic fat. Step-by-step guide →
What about partner satisfaction?
Satisfaction studies suggest girth and technique matter more than length, and most men who worry about size are within the normal range. Read the analysis →