Relation Between Bar And Pascal - A Complete Guide

Bar and Pascal are important terms in pressure measurement in physics and engineering. Though Pascal is the SI unit, the bar is usually preferred in practical applications owing to the larger magnitude of its measure. This article will take you through a complete overview of both units relative to each other, and how to convert between them.

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What is Pascal?

The Pascal is the S.I. unit of pressure, and it is also used to calculate internal pressure, stress, Young's modulus, and ultimate tensile stress. Blaise Pascal inspired the unit's name. As a unit of pressure measurement, the Pascal ( Pa ) or kilopascal ( kPa ) is extensively used around the world.

$$
1 \mathrm{~Pa}=1 \frac{\mathrm{~N}}{\mathrm{~m}^2}=1 \frac{\mathrm{~kg}}{\mathrm{~m} \cdot \mathrm{~s}^2}=1 \frac{\mathrm{~J}}{\mathrm{~m}^3}
$$

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What is a Bar?

Bar is a unit of pressure metric, excluded in the S.I. unit, but exactly equivalent to 100,000 Pa or just under the average atmospheric pressure at sea level on Earth (1.013 bar). The bar and millibar were introduced by the Norwegian meteorologist Vilhelm Bjerknes, who was known for pioneering the field of weather forecasting. Derived from the bar, megabar (Mbar), kilobar (kbar), decibar (dbar), centibar (cbar), and millibar (mbar).

$$
1 \mathrm{bar}=10^5 \mathrm{~Pa}=10^5 \frac{\mathrm{~N}}{\mathrm{~m}^2}=10^5 \frac{\mathrm{~kg}}{\mathrm{~m} \cdot \mathrm{~s}^2}
$$

What is the Relation Between Pascal and Bar?

Conversion of Bar and Pascal