HowTall — Height comparison tool
No characters added
Add characters using the panel to start comparing height.
How to use the tool
Adding characters
- Choose a tab: You, Celebrities or Others
- Enter details or pick from the available list
- Select a silhouette color for clarity
- Click Add character
Managing the comparison
- Add as many characters as you want
- Use +/- to zoom in and out
- Click X on a silhouette to remove it
- Use Share to copy a link
- Switch units between cm and ft/in using the toggle above the chart
More information
Learn more:
- Growing – basics about human height
- Not growing – common reasons and tips
Help:
- Report an issue via Contact
- Read the FAQ
Human height – overview and facts
Human height is a visible physical trait influenced by genetics, health, nutrition and environment. It’s typically measured in centimeters (metric) or feet and inches (imperial).
What affects height?
Height is shaped by multiple factors:
- Genetics – accounts for a large share of final height.
- Nutrition – especially in childhood and adolescence.
- Health – chronic conditions and hormones matter.
- Environment – care access and living conditions.
Growth timeline
The most intensive phases are:
- Early childhood – fastest growth.
- Puberty – growth spurts vary by sex and age.
After growth plates in long bones fuse (usually before age 20), further height increase is not possible.
Average height worldwide
Global differences reflect living conditions:
Tallest populations:
- Men: Netherlands (~182.5 cm)
- Women: Latvia (~170 cm)
Shortest populations:
- Men: Timor-Leste (~160 cm)
- Women: Guatemala (~149 cm)
World averages are roughly ~175 cm for men and ~162 cm for women.
Fun fact: historians use height as a proxy for living conditions.
Height facts
- Can you grow after 18? After plates close – no. Posture and exercise can help appearance.
- Height and longevity: associations exist but depend on many factors.
- Historical changes: averages shifted over the last century.
- Sex differences: men are on average taller than women by ~13 cm.
Summary
Height reflects genetics, health and environment. Its study helps understand biology and living conditions.
What does our site offer?
An interactive tool to visualize and compare the height of people and objects.
Key features
- Visual height comparison – intuitive silhouettes
- Add your own characters – you and your friends
- Celebrity database – actors, athletes and more
- Personalization – color per character
- Zoom controls – +/- for better readability
- Share – generate a short link
- BMI calculator
- WHO centile charts
Benefits
- Simple UI – no complex setup
- Educational – learn about height factors
- No account required
- Privacy – data processed locally
- Mobile friendly
- Growing database
Use cases
- See how you compare to your idol
- Compare family members on one chart
- Analyze team/class height differences
- Educational use in schools/home
- Show future height scenarios
How to support healthy growth
1. Until what age does growth happen?
Growth is most intense in adolescence, roughly until 18–21 years of age.
However, the pace and timing of growth completion depend on genetics and lifestyle.
2. Tips for healthy growth
- Healthy diet: protein, vitamins, and calcium support bone growth.
- Sleep: 8–9 hours supports recovery and growth.
- Physical activity: regular sports strengthen muscles and bones.
- Manage stress: chronic stress may affect hormones and growth.
- Consult professionals: when in doubt, seek medical advice.
3. Key takeaway
Maintaining balance in diet and daily life.
Hydration, nutrition, movement and sleep – four pillars of growth.
What to avoid to not hinder growth
1. When can growth stop or be too low?
After reaching bone maturity (around 18–21 years), bones stop lengthening.
Some diseases, hormonal disorders, but also an unhealthy lifestyle can slow down growth.
2. What to avoid
- Unhealthy diet: too much fast food and sugar lacks nutrients.
- Too little sleep: affects hormones tied to growth.
- Addictions: alcohol, cigarettes, drugs impair health and hormones.
- Extreme diets: deprive body of nutrients needed for bones.
- Excessive heavy lifting (early age): may harm joints if done improperly.
3. Worst practices
- Ignoring body signals: consult a doctor if growth slows.
- Neglecting rest: chronic fatigue and stress block growth.
- Quick “miracle” methods: avoid dubious supplements and promises.