Millimeter of water to Millipascal Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert millimeters of water [mmH₂O, mmWS] to millipascals [mPa] or millipascals [mPa] to millimeters of water [mmH₂O, mmWS]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 millimeter of water [mmH₂O, mmWS] = 9,806.65 millipascals [mPa]1 millipascal [mPa] ≈ 1.02 * 10-4 millimeters of water [mmH₂O, mmWS]

Convert millimeters of water to millipascals

There are two simple ways to convert millimeters of water [mmH₂O, mmWS] to millipascals [mPa]. In the first calculation method, the value in millimeters of water [mmH₂O, mmWS] is divided by the rounded conversion factor of 1.02 * 10-4. The second method multiplies the value in millimeters of water [mmH₂O, mmWS] by 9,806.65.

  • Millipascals [mPa] ≈ millimeters of water [mmH₂O, mmWS] ÷ (1.02 * 10-4)
  • Millipascals [mPa] = millimeters of water [mmH₂O, mmWS] * 9,806.65

The calculation method with a rounded conversion value is more suitable for rough conversions from millimeters of water [mmH₂O, mmWS] to millipascals [mPa], as the calculation result may contain rounding errors. Therefore, the variant with the exact conversion factor is more suitable.


Convert millipascals to millimeters of water

Converting millipascals [mPa] to millimeters of water [mmH₂O, mmWS] is easy and can be done in two ways. The first method involves multiplication, in which the value in millipascals [mPa] is multiplied by the rounded conversion factor of 1.02 * 10-4. The second variant is a division. Here, the value in millipascals [mPa] is divided by 9,806.65.

  • Millimeters of water [mmH₂O, mmWS] ≈ millipascals [mPa] * 1.02 * 10-4
  • Millimeters of water [mmH₂O, mmWS] = millipascals [mPa] ÷ 9,806.65

The rounded conversion value can cause rounding errors, resulting in inaccurate calculation results. To ensure that the conversion from millipascals [mPa] to millimeters of water [mmH₂O, mmWS] produces the most accurate calculation result possible, the conversion should be performed using the exact conversion factor.

Converter

Decimal places

How it's calculated

Factor: 
9,806.65
Millipascals=Millimeters of water*9,806.65
Millimeters of water=
Millipascals9,806.65

To all available units

Millimeters of water

Newtons per square millimeter

Millimeters of water

Pascals

Millimeters of water

Psi

Millimeters of water

Standard atmospheres

Millipascals

Decapascals