How to Convert PSIG to PSIA HG H2O
- 1). Write down the psig value you want to convert to psia in inches of mercury (Hg) or inches of water (H20). For example, you write, "21.3."
- 2). Add 14.7 to the number you have written. For example, 21.3 + 14.7 = 36. The value 21.3 psig represents 36 psia.
- 3). Multiply your psia value by 2.036 using a calculator. For example, 36 x 2.036 = 73.296. The psia value in inches of mercury (Hg) is 73.296.
- 4). Multiply your psia value by 27.684 using a calculator. For example, 36 x 27.684 = 996.624. The psia value in inches of water (H20) is 996.624.
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