The World's Probability Database
Real-world probabilities backed by government data, peer-reviewed research, and official statistics. Know the odds before you decide.
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Health & Disease
Probabilities related to diseases, medical conditions, and health outcomes including cancer, heart disease, and other major illnesses.
197 factsAccidents & Injuries
Odds of accidental death and injury from motor vehicles, falls, drowning, poisoning, and other unintentional causes.
75 factsNatural Disasters
Probabilities of experiencing earthquakes, tornadoes, hurricanes, floods, and other natural catastrophic events.
17 factsAviation & Travel
Risk statistics for air travel, commercial flights, and transportation-related incidents.
11 factsCrime & Safety
Statistics on crime victimization, burglary, identity theft, violent crime, and personal safety.
36 factsFinancial & Career
Probabilities related to IRS audits, bankruptcy, job loss, business success, and financial milestones.
34 factsLife Events
Odds of major life events including marriage, divorce, having twins, and other personal milestones.
47 factsWeather & Environment
Probabilities of lightning strikes, extreme weather events, and environmental hazards.
15 factsRare Events
Extremely unlikely events including lottery wins, shark attacks, meteorite strikes, and other long-shot odds.
36 factsDemographics & Longevity
Life expectancy data, actuarial statistics, and demographic probability data from the Social Security Administration.
32 factsFeatured Probabilities
Annual Probability of Finding Significant Money
About 10% of Americans find money on the ground in a given year, though amounts over $20 are rare. Lost currency totals billions annually.
Rare Events
Annual Probability of a Dental Emergency
About 5% of Americans visit the ER for a dental emergency each year, totaling about 2 million ER visits.
Health & Disease
Probability of PTSD Among Combat Veterans
About 11-20% of veterans who served in Iraq/Afghanistan develop PTSD. Vietnam veterans had rates of about 30%.
Health & Disease
Annual Probability of Injury for Gig Workers
About 5% of rideshare and delivery gig workers experience a work-related injury each year, often without workers' compensation coverage.
Accidents & Injuries
Probability of Qualifying for Student Loan Forgiveness
About 5% of federal student loan borrowers have received some form of loan forgiveness, though eligibility is broader than utilization.
Financial & Career
Annual Probability of Lyme Disease
About 476,000 Americans are diagnosed and treated for Lyme disease each year. Risk is concentrated in the Northeast and upper Midwest.
Health & Disease
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