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Calculate the potential number of people that could be infected with COVID-19 already

Please note that the exact number of infected people cannot be determined. This percentage calculator only gives approximate results based on estimations done by the experts in the field.

DATA LAST UPDATED: November 2, 2020

Potentially infected

from to

Confirmed to be infected

out of

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Countries ranked by the number of COVID-19 clinical studies:
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Amidst COVID-19 pandemic, we have created a calculator that allows measuring the number of the population potentially infected with COVID-19 virus in your country, state or province. Regardless of the results, we advise you to follow all precautions recommended by your local governments and the World Health Organisation to prevent further spread of the virus.

Countries ranked by infected population percentage



Percentage of infected population

Total Confirmed cases

Potentially infected people



Percentage of infected population

Total Confirmed cases

Potentially infected people



Percentage of infected population

Total Confirmed cases

Potentially infected people


Range of potentially infected people is calculated by multypling confirmed cases by 32 for the lower range and 73 for the upper range. According to Dr. Etches based on the estimates of the ratio of confirmed cases to undetected is 1 confirmed case to 73 unconfirmed cases. Lower limit is number of people one infected person infect on average.

Data Sources

New cases worldwide - World Health Organisation

New cases in the USA are aggregated from data provided by CDC and substracted from previous day reports.

New cases in Canada are aggregated from data provided by and substracted from previous day reports.

US population - Wikipedia

Canada population - World Population Review

Other countries population - World Population Review


Please adhere to all precautions recommended by local authorities and the World Health Organisation to prevent further spread of the virus, regardless of the percentage reported by the calculator.

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FAQ about COVID-19

What is Coronavirus (COVID-19)?

Coronavirus disease (COVID-19) is a severe infectious disease that medical experts have confirmed caused by a new virus. This virus is categorized within a group of coronaviruses (CoV), which is a large group of viruses that cause many illnesses ranging from the typical cold to more severe illnesses. The new strain, called novel coronavirus (nCoV), has not been previously discovered in humans.

On January 30, 2020, the World Health Organization Director-General declared the novel coronavirus (2019-nCoV) outbreak a health emergency affecting the world internationally. This disease affects the respiratory system causing flu-like illnesses with symptoms like fever, cough, and in the more severe cases, difficulty in breathing.

How dangerous is COVID-19?

This coronavirus disease spreads mainly through contact with an infected person when they sneeze or cough. It also spreads whenever a person touches an object or a surface that has a virus on it, and then they touch their nose, eyes, or mouth. The death rate of the virus that causes the COVID-19 disease is unique for every location, the age of the infected individual, and the presence of any underlying health conditions.

While most people who catch this virus recover at home, some may need hospitalization to combat the pathogen. For the elderly and those with preexisting health burdens, the disease is deadly, and statistics show that they are more likely to lose their lives compared to younger patients.

What are the symptoms of the COVID-19?

People may be sick with the virus for 1 to 14 days before developing any symptoms. The most common symptoms of COVID-19 include tiredness, fever, and a dry cough. A majority of the people, around 80%, recover from the disease without having to go for special treatment.

In rare cases, this disease can turn out to become severe and even fatal. The older people and individuals with other underlying medical conditions like diabetes, asthma, or heart disease may be more vulnerable to becoming severely ill. In severe cases, patients have difficulty breathing and may need the assistance of a ventilator in breathing.

How to protect against the coronavirus pandemic?

No treatment or vaccine has been identified up to today. Medical experts advise that to reduce the risk of contracting coronavirus, ensure that you clean hands with soap and water or a 70% alcohol-based hand rub. Cover nose and mouth when coughing or sneezing using a tissue or a flexed elbow. Whenever outside, ensure that you maintain social distancing.

Also, avoid close contact with anyone who exhibits cold or flu-like symptoms. Also, use disposable face masks (FFP2 at least, a.k.a. N95, KN95) and disposable gloves for extra protection when visiting public places. Additionally, avoid close contact with people by maintaining a social distance of at least 6 feet. Thoroughly cook meat and eggs and ensure that avoid contact with unprotected wild and farm animals.