---
title: "Life Expectancy Calculator — By Country, Lifestyle Factors (WHO / OECD Data)"
description: "Estimate life expectancy based on your country, age, sex, BMI, smoking status, and exercise level. Uses WHO and OECD life expectancy data for 12 countries."
url: "https://worldcalculators.org/calculators/life-expectancy/"
canonical: "https://worldcalculators.org/calculators/life-expectancy/"
---

# Life Expectancy Calculator

Estimate life expectancy based on your country, age, sex, BMI, smoking status, and exercise level. Uses WHO and OECD life expectancy data for 12 countries.

## Quick answer

World average life expectancy: ~73 years (WHO 2023). Top countries: Japan 84.3, Switzerland 83.8, Australia 83.2, South Korea 83.3. US: 76.4 years (ranks 46th). Smoking cuts ~10 years. Obesity (BMI ≥30) cuts ~3 years. Exercise adds 2–3 years. Significant differences exist by country — driven by diet, healthcare access, and lifestyle patterns.

## Life Expectancy by Country (WHO / OECD 2023)

Source: WHO Global Health Observatory, OECD Health Statistics 2023. Values are approximate at birth.

Source: https://worldcalculators.org/calculators/life-expectancy/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.