Consistently elevated blood pressure of 140 mm Hg systolic and 90 mm Hg diastolic or higher is considered as a High blood pressure in adults. The blood pressure calculator will let you to identify whether you could be suffering from high blood pressure or low blood pressure. Once high blood pressure develops, it is difficult to control it. Some of the complications of high blood pressure are heart diseases, heart attack, congestive heart failure, stroke, kidney failure, peripheral artery disease, aortic aneurysms (Small bulges of the aorta). High blood pressure does not usually show symptoms. High blood pressure is often called the silent killer because a person comes to know when he suffers from some complication. Blood pressure can only be measured through blood  More Details