Cardiovascular disease is the leading cause of death among men and the second in women.
PHE has designed the test to provide those who take it with a "heart age", which can be increased by high cholesterol and high blood pressure.
You can learn your heart age by visiting this page on the NHS website, where you answer 16 questions about your health and lifestyle.
PHE estimates a quarter of these deaths occur among those under 75, and up to 50 deaths a day would not have happened if the victim had looked after his or her heart health better.
Four out of five people recorded a heart age higher than their actual age in a new NHS test - so how do you get on?
How do I improve my heart health?.
The results show that 34 percent of people had a heart age more than five years above their real age while in 14 percent it was a decade older.
Jamie Waterall, its head of cardiovascular disease, said: "Millions are at risk of cardiovascular disease but don't know it, putting themselves at real risk of suffering ill health or dying younger".
According to PHE, 24,000 of deaths in England every year are in people aged under 75 years, and the vast majority of these - 80 percent - are preventable, which equates to around 50 per day.
PHE's free online tool, The Heart Age Test, created to assess the cardiovascular health of people over 30, runs through a series of questions related to an individual's lifestyle and physical health.
As part of the campaign, Amazon and Omron - the UK's leading blood pressure monitor manufacturer - are working with Public Health England to launch a roadshow called "Treasure Your Heart" to engage more people in the idea of knowing their heart age and blood pressure. You can see this by changing one of the major risk factors or any combination of the three.
It determines whether their "heart age" is higher than their actual age and gives an indication of how this affects their risk of having a heart attack.
"Tens of thousands of people across the country are at risk of cardiovascular disease but don't realise it". By taking simple steps to adjust behaviour and lifestyle patterns people can significantly reduce their risk of a stroke or heart attack.
Health officials warn the public to change their lifestyle and try living a healthier life to reduce the risk of heart disease. Adults are encouraged to search "heart age" to take the free online test.