Texas Cosmetology Operator Written ExamNail Care ServicesHard
The average rate of nail growth in a healthy adult is approximately:
- A1/32 inch (0.8 mm) per month
- B1/8 inch (3.2 mm) per month
- C1/4 inch (6.4 mm) per month
- D1/16 inch (1.6 mm) per month
Show answer & explanationAnswer & explanation
Correct answer: B. 1/8 inch (3.2 mm) per month
The average growth rate for fingernails in a healthy adult is approximately 1/8 inch (3.2 mm) per month. Toenails grow slower.
Why the other options are wrong
- A. This rate is too slow for average fingernail growth.
- C. This rate is too fast for average fingernail growth; this would be over 3 inches per year.
- D. This rate is also too slow for average fingernail growth.
Average Nail Growth Rate
The typical speed at which healthy fingernails grow in adults.
- Approximately 1/8 inch (3.2 mm) per month
- Fingernails grow faster than toenails
- Affected by age, nutrition, health, and season
Memory trick: One-eighth a month, for nail growth's stunt.