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**Standard Atmosphere**

**Standard Atmosphere (atm)**is a unit in the category of

*Pressure*. It is also known as standard atmospheres. This unit is commonly used in the INT unit system. Standard Atmosphere (atm) has a dimension of ML

^{-1}T

^{-2}where M is mass, L is length, and T is time. It can be converted to the corresponding standard SI unit Pa by multiplying its value by a factor of 101325.

Other units in the category of Pressure include Atmosphere (metric) (at), Atmosphere (standard) (atm), Bar (bar), Barad (barad), Barye, CentiHg (0°C), Centimeter of Mercury (0°C) (cmHg (0 °C)), Centimeter of Water (4°C) (cmH_{2}O), Dyne Per Square Centimeter (dyn/cm^{2}), Foot of Water (4°C) (ft H_{2}O), Gigapascal (GPa), Hectopascal (hPa), Inch of Mercury (0°C) (inHg (0 °C)), Inch of Mercury (15.56°C) (inHg (15.56 °C)), Inch of Water (15.56°C) (inH_{2}O (15.56 °C)), Inch of Water (4°C) (inH_{2}O (4 °C)), Kilogram Force Per Square Centimeter (kgf/cm^{2}), Kilogram Force Per Square Decimeter (kgf/dm^{2}), Kilogram Force Per Square Meter (kgf/m^{2}), Kilogram Force Per Square Millimeter (kgf/mm^{2}), Kilopascal (kPa), Kilopound Force Per Square Inch (kip/in^{2}, ksi, KSI), Megapascal (MPa), Meter of Water (15.56°C) (mH_{2}O, mCE (15.56 °C)), Meter of Water (4°C) (mH_{2}O, mCE (4 °C)), Microbar (barye, Barrie) (µbar), Micron of Mercury (millitorr) (µHg (0 °C)), Millibar (mbar), Millimeter of Mercury (0°C) (mmHg, torr, Torr (0 °C)), Millimeter of Water (15.56°C) (mmH_{2}O, mmCE (15.56 °C)), Millimeter of Water (4°C) (mmH_{2}O, mmCE (4 °C)), Millitorr (mtorr), Newton Per Square Meter (N/m^{2}), Ounce Force (av.) Per Square Inch (ozf/in^{2}, osi), Pascal (Pa, N/m^{2}), Pound Force Per Square Foot (lbf/ft^{2}), Pound Force Per Square Inch (psi, PSI, lbf/in^{2}), Poundal Per Square Foot (pdl/ft^{2}), Poundal Per Square Inch (pdl/in^{2}), Ton Force (long) Per Square Foot (tonf/ft^{2} (UK)), Ton Force (long) Per Square Inch (tonf/in^{2} (UK)), Ton Force (metric) Per Square Centimeter (tonf/cm^{2} (metric)), Ton Force (metric) Per Square Meter (tonf/m^{2} (metric)), Ton Force (short) Per Square Foot (tonf/ft^{2} (US)), Ton Force (short) Per Square Inch (tonf/in^{2} (US)), and Torr (torr).

**Additional Information**

**Related Glossary Pages**

Glossary: Units: Energy: Thermie (15°C)

Glossary: Units: Volume: Pint (UK)

Glossary: Units: Energy: Calorie (15°C)

Glossary: Units: Dynamic Viscosity: Reynolds (reyns)

Glossary: Units: Energy: A.u. of Energy

Glossary: Units: Electric Capacitance: Emu of Electric Capacitance

Glossary: Units: Time: Month (synodic), Lunar Month

Glossary: Units: Pressure: Ton Force (long) Per Square Inch

Glossary: Units: Energy: Calorie (thermochemical)

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