How many times does your heart beat in a lifetime?
At a resting rate of 70 beats a minute over a life expectancy of 73 years, the heart beats about 2.7 billion times. The honest range is 2 to 3.5 billion, because resting heart rate varies from 50 to 100 across healthy adults and because daily activity pushes the average above the resting figure. There is a striking pattern here: across mammals, from mouse to elephant, lifetime heartbeats cluster near a billion regardless of body size — a shrew at 600 beats a minute for two years and an elephant at 30 beats a minute for 60 years arrive at similar totals.
How the figure is arrived at
70 beats/min × 60 × 24 × 365.25 × 73 years = 2.69 billion. Every input is a published average: resting heart rate from clinical reference ranges, life expectancy from WHO figures. Change life expectancy to 80 and the answer becomes 2.9 billion; change the rate to 60 and it drops to 2.5 billion.
How confident it is
- Low estimate
- 2,000,000,000
- High estimate
- 3,500,000,000
- Spread
- 1.8× between the bounds
Other every day counts
- How many babies are born each day? about 360,000 — roughly four every second
- How many people die each day? about 170,000 — roughly two every second
- How many Google searches are made every day? roughly 8.5 billion — about 100,000 a second
- How many emails are sent every day? about 360 billion
- How many cups of coffee are drunk every day? roughly 2.5 billion
- How many photos are taken every day? roughly 5 billion a day — about 2 trillion a year
- How many steps do you take in a lifetime? roughly 150 million — about 110,000 km
- How many hours of video are uploaded to YouTube every minute? 500 hours a minute — about 720,000 hours a day
- How many pizzas are sold every day? somewhere between 3 and 8 million a day in the United States
- How many words do we speak a day? about 16,000
- How many breaths do you take in a lifetime? about 600 million
- How many messages are sent every day? about 100 billion on WhatsApp alone
Common questions
- How many times does your heart beat in a lifetime?
- about 2.5 billion
- How is that estimated?
- 70 beats/min × 60 × 24 × 365.25 × 73 years = 2.69 billion. Every input is a published average: resting heart rate from clinical reference ranges, life expectancy from WHO figures. Change life expectancy to 80 and the answer becomes 2.9 billion; change the rate to 60 and it drops to 2.5 billion.
Related pages
- How many babies are born each day? about 360,000 — roughly four every second
- How many people die each day? about 170,000 — roughly two every second
- How many Google searches are made every day? roughly 8.5 billion — about 100,000 a second
- How many emails are sent every day? about 360 billion
- How many cups of coffee are drunk every day? roughly 2.5 billion
- How many photos are taken every day? roughly 5 billion a day — about 2 trillion a year
- How many steps do you take in a lifetime? roughly 150 million — about 110,000 km
- How many hours of video are uploaded to YouTube every minute? 500 hours a minute — about 720,000 hours a day
- How many people are there in the world? Living things and the natural world
- How many stars are there in the universe? Space and the universe
- How many countries are there in the world? Things people built
- How many bones are in the human body? The human body
- How many grains of sand are there on Earth? Living things and the natural world
- How many ants are there in the world? Living things and the natural world
Sources
- Calculated on this page — At One Place