Pound per square foot to Inch of water Converter (and vice versa)
Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026
This converter allows you to convert pounds per square foot [lb/ft², psf] to inches of water [inH₂O] or inches of water [inH₂O] to pounds per square foot [lb/ft², psf]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.
Convert pounds per square foot to inches of water
There are two simple ways to convert pounds per square foot [lb/ft², psf] to inches of water [inH₂O]. In the first calculation method, the value in pounds per square foot [lb/ft², psf] is divided by the rounded conversion factor of 5.1971. The second method multiplies the value in pounds per square foot [lb/ft², psf] by the rounded conversion factor of 0.1924.
- Inches of water [inH₂O] ≈ pounds per square foot [lb/ft², psf] ÷ 5.1971
- Inches of water [inH₂O] ≈ pounds per square foot [lb/ft², psf] * 0.1924
However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of pounds per square foot [lb/ft², psf] to inches of water [inH₂O] can be achieved using the following calculation method.
- Inches of water [inH₂O] = pounds per square foot [lb/ft², psf] * 4,535.9237 * 9.80665 ÷ 447.912 ÷ 516.128
Convert inches of water to pounds per square foot
Converting inches of water [inH₂O] to pounds per square foot [lb/ft², psf] is easy and can be done in two ways. The first method involves multiplication, in which the value in inches of water [inH₂O] is multiplied by the rounded conversion factor of 5.1971. The second variant is a division. Here, the value in inches of water [inH₂O] is divided by the rounded conversion factor of 0.1924.
- Pounds per square foot [lb/ft², psf] ≈ inches of water [inH₂O] * 5.1971
- Pounds per square foot [lb/ft², psf] ≈ inches of water [inH₂O] ÷ 0.1924
However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of inches of water [inH₂O] to pounds per square foot [lb/ft², psf] can be achieved using the following calculation method.
- Pounds per square foot [lb/ft², psf] = inches of water [inH₂O] ÷ 4,535.9237 ÷ 9.80665 * 447.912 * 516.128
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Pounds per square foot
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