Psi Converter
Convert Psi to Inch Mercury 32 176 F and more • 57 conversions
0
Unit Explanations
Pounds per Square Inchpsi
Source UnitPsi or 'pounds per square inch' is a unit used to measure pressure. It defines the pressure resulting from a force of one pound-force applied to an area of one square inch. As a non-SI unit, it is commonly used in the United States and other countries still employing the Imperial system. Psi is vital in various engineering and mechanical applications, providing a practical measure for pressure in car tires, hydraulic systems, and more. It offers a direct relationship to other pressure units through conversion factors.
Current Use
Today, psi is extensively used in various fields, particularly in the United States. It is prevalent in automotive applications, where it measures tire pressure, ensuring safety and performance. Additionally, psi is crucial in aerospace, measuring cabin pressure and hydraulic systems. In industrial settings, it is used for pressure gauges, compressors, and pneumatic tools. Despite the global trend towards SI units, psi's practical relevance maintains its usage in specific regions and industries.
Fun Fact
Psi is still a preferred unit in U.S. automotive manuals.
Inch of MercuryinHg
Target UnitAn inch of mercury (inHg) is a unit of pressure defined as the height of a column of mercury exactly one inch high at standard gravity (9.80665 m/s²) at a temperature of 0°C (32°F). It is commonly used in meteorology and aviation to express atmospheric pressure. The standard atmospheric pressure at sea level is defined as 29.92 inHg, which corresponds to 1013.25 hPa or 101.325 kPa. The inHg is derived from the density of mercury and the gravitational force acting on it, making it a practical unit for measuring pressure in various applications.
Current Use
The inch of mercury is widely used in meteorology to report atmospheric pressure and in aviation for altimeter settings. It remains a popular unit in the United States for weather forecasts, assisting pilots in determining altitude and weather conditions. While many countries have adopted SI units, the inHg is still prevalent in specific industries and applications, particularly in HVAC systems and barometric pressure measurements.
Fun Fact
An inch of mercury is defined based on the standard acceleration due to gravity, which varies slightly depending on location.
All Pressure Conversions
105 convertersPopular Conversions
📐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.
Quick Examples
💡 Pro Tip: For the reverse conversion ( → ), divide by the conversion factor instead of multiplying.
Pounds per Square Inch
pressure • Non-SI
Definition
Psi or 'pounds per square inch' is a unit used to measure pressure. It defines the pressure resulting from a force of one pound-force applied to an area of one square inch. As a non-SI unit, it is commonly used in the United States and other countries still employing the Imperial system. Psi is vital in various engineering and mechanical applications, providing a practical measure for pressure in car tires, hydraulic systems, and more. It offers a direct relationship to other pressure units through conversion factors.
History & Origin
The psi unit emerged from the need to measure pressure in the Imperial system, prevalent in the United States and other regions before the widespread adoption of the metric system. It is a derivative unit representing the pressure exerted by a force of one pound-force on a square inch of surface area. The concept of pressure measurement has evolved over time, with psi becoming a standard term in industries reliant on precise pressure control.
Etymology: The term 'psi' stands for 'pounds per square inch,' combining 'pound,' a unit of force, and 'square inch,' a unit of area.
Current Use
Today, psi is extensively used in various fields, particularly in the United States. It is prevalent in automotive applications, where it measures tire pressure, ensuring safety and performance. Additionally, psi is crucial in aerospace, measuring cabin pressure and hydraulic systems. In industrial settings, it is used for pressure gauges, compressors, and pneumatic tools. Despite the global trend towards SI units, psi's practical relevance maintains its usage in specific regions and industries.
💡 Fun Facts
- •Psi is still a preferred unit in U.S. automotive manuals.
- •Psi is used in the pressure ratings of paintball guns.
- •The average human bite exerts about 200 psi.
📏 Real-World Examples
🔗 Related Units
Inch of Mercury
pressure • Non-SI
Definition
An inch of mercury (inHg) is a unit of pressure defined as the height of a column of mercury exactly one inch high at standard gravity (9.80665 m/s²) at a temperature of 0°C (32°F). It is commonly used in meteorology and aviation to express atmospheric pressure. The standard atmospheric pressure at sea level is defined as 29.92 inHg, which corresponds to 1013.25 hPa or 101.325 kPa. The inHg is derived from the density of mercury and the gravitational force acting on it, making it a practical unit for measuring pressure in various applications.
History & Origin
The inch of mercury unit originated in the context of barometric pressure measurement systems developed in the 17th century. The use of mercury in barometers was popularized by Evangelista Torricelli in 1643 when he created the first barometer. This device demonstrated that atmospheric pressure could support a column of mercury, leading to the standardization of pressure measurements in terms of mercury height.
Etymology: The term 'inch' is derived from the Latin 'uncia,' which means 'one-twelfth,' and 'mercury' refers to the element mercury, named after the Roman god Mercury due to its liquid metallic state and quicksilver appearance.
Current Use
The inch of mercury is widely used in meteorology to report atmospheric pressure and in aviation for altimeter settings. It remains a popular unit in the United States for weather forecasts, assisting pilots in determining altitude and weather conditions. While many countries have adopted SI units, the inHg is still prevalent in specific industries and applications, particularly in HVAC systems and barometric pressure measurements.
💡 Fun Facts
- •An inch of mercury is defined based on the standard acceleration due to gravity, which varies slightly depending on location.
- •Mercury is favored in barometers due to its high density, allowing for a more compact measurement system.
- •The term 'barometric pressure' is often used interchangeably with 'inches of mercury' in weather reports.
📏 Real-World Examples
🔗 Related Units
Related Pressure Conversions
Explore more pressure conversions for your calculations.
Frequently Asked Questions
How do I convert to ?▼
To convert to , multiply your value by 1. For example, 10 equals 10 .
What is the formula for to conversion?▼
The formula is: = × 1. This conversion factor is based on international standards.
Is this to converter accurate?▼
Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.
Can I convert back to ?▼
Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.