Inch of water to Bar Converter (and vice versa)
Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026
This converter allows you to convert inches of water [inH₂O] to bar or bar to inches of water [inH₂O]. 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 inches of water to bar
There are two simple ways to convert inches of water [inH₂O] to bar. In the first calculation method, the value in inches of water [inH₂O] is divided by the rounded conversion factor of 401.8647. The second method multiplies the value in inches of water [inH₂O] by the rounded conversion factor of 0.0025.
- Bar ≈ inches of water [inH₂O] ÷ 401.8647
- Bar ≈ inches of water [inH₂O] * 0.0025
However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of inches of water [inH₂O] to bar can be achieved using the following calculation method.
Convert bar to inches of water
Converting bar to inches of water [inH₂O] is easy and can be done in two ways. The first method involves multiplication, in which the value in bar is multiplied by the rounded conversion factor of 401.8647. The second variant is a division. Here, the value in bar is divided by the rounded conversion factor of 0.0025.
- Inches of water [inH₂O] ≈ bar * 401.8647
- Inches of water [inH₂O] ≈ bar ÷ 0.0025
However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of bar to inches of water [inH₂O] can be achieved using the following calculation method.
Converter
Decimal places
How it's calculated
To all available units
Inches of water
Decapascals
Inches of water
Gigapascals
Inches of water
Hectopascals
Inches of water
Kilobar
Inches of water
Kilograms per square centimeter
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