Hair Growth Calculator
Estimate growth from time, time from growth, and project your final length.
📈 Growth length (given time)
⏳ Time required (given growth)
💇 Current & final length
🧩 Quick summary
Enter values above to see your summary.
🧮 Step-by-step derivation
- Average growth rate
r≈0.5 in/month=1.27 cm/month=12.7 mm/month. - Convert your time
tto months (1 mo ≈ 30.44 d ≈ 4.348 w; 1 y = 12 mo). - Growth length:
L = r × t. - Final length with current length
C:F = C + L.