si unit of pressure is pascal which is equal to
Pascal (unit) The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength. It is defined as one newton per square metre.[1] It is named after the French polymath Blaise Pascal.
Torr The torr (symbol: Torr) is a unit of pressure based on an absolute scale, now defined as exactly 1/760 of a standard atmosphere. Thus one torr is exactly 7005101325000000000♠101325/760 pascals (≈ 133.32 Pa).