Gerontologist Thomas Perls from Boston University claims that his development takes into account dozens of parameters that contribute to the overall health of a person, which allows calculating life expectancy with an accuracy of more than 70%. While taking the Perls test, you need to provide basic data about yourself, including age, gender, place of residence, medical indicators, lifestyle and other parameters. But that’s not all: this calculator even asks about your education, seatbelt use, oral hygiene, work schedule, and more. The test contains 40 questions in total, and it takes about 10 minutes to complete. Once the approximate life expectancy is calculated, this online tool will suggest what needs to be changed in behaviour, habits to add extra years of life to yourself. Heredity undoubtedly matters if one hopes to live a hundred years, but it is still ‘good to be in control of one’s health at least until the age of 90,’ exclaims Thomas Perls. The test can be taken on the gerontologist’s official website.

This calculator contains not only basic questions about date of birth, chronic diseases and family medical history, but also about biomarkers such as cholesterol levels or blood pressure, and even the intake of various micronutrients. Some questions require quite a bit of concentration, but this more sophisticated approach can provide more accurate results. After taking the test, recommendations for maintaining and improving your health will be offered. Find this calculator on the Sharecare website.

You can get the most optimistic predictions with this online device! The whole test takes only three to four minutes and does not require any additional information that may not be at hand (like cholesterol levels). All questions and recommendations are based on data collected by American researcher Dan Buettner and described in his book ‘Blue Zones. Nine rules of longevity from the people who live the longest’. For many years he studied special zones of the Earth, where the largest number of long-livers live – the islands of Okinawa (Japan), Sardinia (Italy), the state of California (USA), the state of Costa Rica in Central America. Having analysed the way of life of aborigines, he derived a system of rules for a long healthy life, which formed the basis of the book and this calculator. You can calculate the approximate number of years on the Blue Zones website.

Representatives of the British broadcaster BBC have published an online calculator of life expectancy. Under this term, experts understand the number of years a person can live, taking into account age, gender and country of residence. The authors of the project write that those born in the noughties and later will live at least seven years longer than those who are older by 10-20 years. The calculator allows you to see life expectancy data based on mortality and morbidity statistics for people around the world. After entering personal data, it will show how long a person can live on average in a specified country, as well as how much of the rest of their life they will spend in good health. In addition, one can see where his country ranks in terms of life expectancy. For example, a man from Finland who is currently 30 years old could live to be 80 years old, and 83% of those years would be spent in good health. However, the calculator is designed on the assumption that mortality and morbidity rates will remain the same throughout a person’s life. Thus, it does not take into account possible scientific breakthroughs in medicine. You can enter the data and see the results on the BBC website.

Swedish scientists from Uppsala University have created an online calculator of a person’s biological age and risk of dying within the next five years. To develop this tool, they used information stored in a large research data bank, the UK Biobank. The test contains 13 questions for men and 11 for women, with a range of ages between 40 and 70. Based on the answers, a biological ‘Ubble-age’ is calculated (Ubble, UK Longevity Explorer, is the name given to the calculator). If the value obtained is less than the real age of the person, it means that his risk of death in the next five years is lower than average, and vice versa. The authors note that the results obtained show only the average statistical value and are not a personal prediction. For example, if the probability of dying within the next five years is five per cent, it means only that out of 100 people with the same indicators (and that – with a probability of 80 per cent) may die five, but who exactly – you can not say. You can estimate your risk of death over the next five years on the Ubble website. Photo: media.mnn.com