A pascal is an SI unit of pressure = 1 newton / m2. An atmosphere is equal to the air pressure at sea level, which is 101325 pascals. Many barometers for measuring air pressure may have a scale for kilopascals, so 1 ATM = 101.325 kPa
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Mega Pascal - measurement of pressure
The Pascal is the SI unit: one Newton per square meter. Other units are the atmosphere and the torr (760 torr/atm)
A pascal is one Newton per square meter. You cannot go from pascal to meters, they are different units of measurement.
The international standard unit for measuring pressure is the pascal. 1 pascal = 1 newton / square meter. A unit commonly used is the bar; 1 bar = 100,000 pascal; and that's the approximate air pressure at sea level. Older units that are still sometimes used include mmHg (millimeter mercury).
1 Pascal is 1 Newton per meter2 Nm-2