Bar Converter
Convert Bar to Pound Force Square Foot and more • 57 conversions
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Unit Explanations
Barbar
Source UnitThe bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
Fun Fact
The bar is almost exactly the atmospheric pressure on Earth at sea level.
Pound Force per Square Footpsf
Target UnitThe pound force per square foot (psf) is a unit of pressure that quantifies the amount of force applied to a specific area. Defined as one pound-force per square foot, it is used to express pressure in various engineering and construction applications. This unit is part of the Imperial system of measurement, where pressure is calculated by dividing force (in pounds) by area (in square feet). Thus, 1 psf corresponds to a force of 1 pound acting uniformly over an area of 1 square foot. It is crucial in fields like civil engineering, meteorology, and HVAC.
Current Use
Pound force per square foot is predominantly used in engineering, architecture, and construction to assess the pressure exerted by loads. It plays a critical role in evaluating the strength of materials and structures, especially in the United States. The unit is also used in HVAC systems to determine air pressure and flow rates in buildings. Although the SI unit pascal is often preferred, psf remains essential in contexts where Imperial units are standard.
Fun Fact
1 psf is equivalent to approximately 47.88 pascals.
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📐Conversion Formula
= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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Bar
pressure • Non-SI
Definition
The bar is a metric unit of pressure, not part of the International System of Units (SI), but is commonly used in industry and meteorology. It is defined as exactly 100,000 pascals, which is slightly less than the average atmospheric pressure on Earth at sea level. One bar is equivalent to 0.987 atmospheres, 14.5038 pounds per square inch (psi), or 750.06 millimeters of mercury (mmHg). Although not an SI unit, it is accepted for use with the SI and is widely used due to its convenient size for many applications.
History & Origin
The bar as a unit of pressure was introduced in the early 20th century. It was created to provide a convenient metric unit for expressing pressures without having to resort to using large numbers, as can occur with the pascal. The bar was defined in 1909 by the International Union of Pure and Applied Chemistry (IUPAC) to be equivalent to 100,000 pascals, simplifying conversion with the SI system.
Etymology: The word 'bar' comes from the Greek word 'baros', meaning weight.
Current Use
The bar is widely used in various fields including meteorology for atmospheric pressure, and in industries such as automotive and aviation for tire pressure and cabin pressure monitoring. It is especially favored in contexts where moderate pressures need to be measured with a single-digit number, avoiding the unwieldy values that would result from using pascals.
💡 Fun Facts
- •The bar is almost exactly the atmospheric pressure on Earth at sea level.
- •The unit 'bar' is not an SI unit, but it's accepted for use with SI due to its practicality.
- •The word 'barometer', an instrument for measuring atmospheric pressure, shares its root with the unit 'bar'.
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🔗 Related Units
Pound Force per Square Foot
pressure • Non-SI
Definition
The pound force per square foot (psf) is a unit of pressure that quantifies the amount of force applied to a specific area. Defined as one pound-force per square foot, it is used to express pressure in various engineering and construction applications. This unit is part of the Imperial system of measurement, where pressure is calculated by dividing force (in pounds) by area (in square feet). Thus, 1 psf corresponds to a force of 1 pound acting uniformly over an area of 1 square foot. It is crucial in fields like civil engineering, meteorology, and HVAC.
History & Origin
The concept of pressure has been around since the early days of physics, but the specific unit, pound force per square foot, emerged with the development of the Imperial system in the 19th century. The use of pounds as a measure of force traces back to ancient systems, while area measurements in square feet became standardized in England as construction and engineering practices grew.
Etymology: The term 'pound' originates from the Latin 'pondus', meaning weight, while 'force' is derived from the Latin 'fortis', meaning strong, and 'foot' refers to the standard unit of length that signifies the human foot.
Current Use
Pound force per square foot is predominantly used in engineering, architecture, and construction to assess the pressure exerted by loads. It plays a critical role in evaluating the strength of materials and structures, especially in the United States. The unit is also used in HVAC systems to determine air pressure and flow rates in buildings. Although the SI unit pascal is often preferred, psf remains essential in contexts where Imperial units are standard.
💡 Fun Facts
- •1 psf is equivalent to approximately 47.88 pascals.
- •The pressure exerted by a human standing on one foot is around 75 psf, depending on weight.
- •The concept of pressure wasn't formally defined until the 17th century when scientists started studying fluid mechanics.
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🔗 Related Units
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Frequently Asked Questions
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