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Millimeters of Water to Pascal Converter

mmH₂O → Pa: type a value and the result appears instantly.

1 mmH₂O = 9.80665 Pa
1 Pa = 0.1019716213 mmH₂O
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How to convert millimeters of water to pascal

Use this formula:

Pa = mmH₂O × 9.80665

Examples

mmH₂O to Pa conversion chart

millimeters of water (mmH₂O)pascal (Pa)
0.1 mmH₂O0.980665 Pa
0.25 mmH₂O2.45166 Pa
0.5 mmH₂O4.90332 Pa
1 mmH₂O9.80665 Pa
2 mmH₂O19.6133 Pa
3 mmH₂O29.42 Pa
4 mmH₂O39.2266 Pa
5 mmH₂O49.0332 Pa
6 mmH₂O58.8399 Pa
7 mmH₂O68.6465 Pa
8 mmH₂O78.4532 Pa
9 mmH₂O88.2599 Pa
10 mmH₂O98.0665 Pa
12 mmH₂O117.68 Pa
15 mmH₂O147.1 Pa
20 mmH₂O196.133 Pa
25 mmH₂O245.166 Pa
30 mmH₂O294.2 Pa
40 mmH₂O392.266 Pa
50 mmH₂O490.332 Pa
60 mmH₂O588.399 Pa
70 mmH₂O686.465 Pa
75 mmH₂O735.499 Pa
80 mmH₂O784.532 Pa
90 mmH₂O882.598 Pa
100 mmH₂O980.665 Pa
150 mmH₂O1,471 Pa
200 mmH₂O1,961.33 Pa
250 mmH₂O2,451.66 Pa
500 mmH₂O4,903.32 Pa
1,000 mmH₂O9,806.65 Pa

About the units

Millimeter of water (mmH₂O) is a commonly used unit. 1 mmH₂O = 9.80665 Pa.

Pascal (Pa) is a metric (SI) unit. 1 Pa = 0.01 hPa.

Frequently asked questions

How do I convert millimeters of water to pascal?
Multiply the value in mmH₂O by 9.80665.
How many pascal are in 1 millimeter of water?
1 mmH₂O = 9.80665 Pa.
What is 12 mmH₂O in Pa?
12 mmH₂O = 117.68 Pa.
How do I convert pascal to millimeters of water?
Use the reverse converter: Pa → mmH₂O.

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Sources: NIST SP 811 · BIPM SI Brochure · NIST Handbook 44. Last reviewed: 2026-10 · FreeUnitConverters