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Conversion Formula:
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N/mm² (newtons per square millimeter) and PSI (pounds per square inch) are both units of pressure. This conversion is commonly used in engineering and scientific applications where different measurement systems are employed.
The conversion uses the formula:
Where:
Explanation: This conversion factor is derived from the relationship between metric and imperial pressure units, where 1 N/mm² equals approximately 145.038 PSI.
Details: Accurate pressure unit conversion is essential in engineering design, material testing, and international collaboration where different measurement systems are used. Proper conversion ensures consistency and safety in calculations.
Tips: Enter the N/mm² value in the input field. The value must be a positive number. The calculator will automatically convert it to PSI using the standard conversion factor.
Q1: Why is the conversion factor 145.038?
A: This factor is derived from the relationship between newtons and pounds (1 N = 0.224809 lb) and square millimeters and square inches (1 mm² = 0.00155 in²), resulting in the precise conversion factor.
Q2: How accurate is this conversion?
A: The conversion factor 145.038 is a standard value used in engineering calculations and provides high accuracy for most practical applications.
Q3: Can I convert PSI back to N/mm²?
A: Yes, to convert PSI to N/mm², divide the PSI value by 145.038 (N/mm² = PSI ÷ 145.038).
Q4: Where is this conversion commonly used?
A: This conversion is frequently used in mechanical engineering, material science, hydraulic systems, and pressure vessel design where both metric and imperial units are encountered.
Q5: Are there other pressure units I should know about?
A: Yes, other common pressure units include pascal (Pa), bar, atmosphere (atm), and torr. Each has its own conversion factors with N/mm² and PSI.