Life Expectancy Calculator
This calculator gives you a rough statistical estimate of your life expectancy based on your age, sex, and a few key lifestyle factors. It uses US actuarial life table baselines and adjusts for smoking, exercise, and BMI. Remember, this is a statistical estimate for educational purposes, not a medical prediction.
Life expectancy varies significantly based on lifestyle choices. Here's what the research says about the biggest factors:
What Affects Life Expectancy Most
- Smoking: Current smokers live an average of 10 years less than non-smokers. Quitting by age 40 recovers most of that lost time.
- Exercise: Regular moderate exercise (like brisk walking 30 min/day) adds 3-4 years on average. Even light exercise helps.
- BMI: Obesity (BMI 30+) reduces life expectancy by 3-8 years depending on severity. Being underweight (BMI under 18.5) also carries risk.
- Sex: Women live about 5-6 years longer than men on average in the US.
US Life Expectancy Averages (2023)
| Group | Life Expectancy |
|---|---|
| Overall | 77.5 years |
| Males | 74.8 years |
| Females | 80.2 years |
Important: This calculator provides a rough statistical estimate for educational purposes. It does not account for genetics, diet quality, mental health, access to healthcare, socioeconomic factors, or hundreds of other variables. Talk to your doctor for personalized health assessments.