Abstract: Systems, devices, and methods for measuring blood pressure without the use of a pump are provided. A pumpless blood pressure measuring system or device can be wearable for long periods of time comfortably. The pumpless blood pressure measuring system or device can include a body, at least one tension band connected to the body, at least one pressure sensor configured to be in direct physical contact with the user's body, and a tourniquet mechanism. The tourniquet mechanism can be tightened to lead to artery occlusion such that the at least one pressure plate can determine the blood pressure of the user/wearer.