Millimeter of water to Millimeter of mercury 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 millimeters of mercury [mmHg, Torr] or millimeters of mercury [mmHg, Torr] 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.
Convert millimeters of water to millimeters of mercury
There are two simple ways to convert millimeters of water [mmH₂O, mmWS] to millimeters of mercury [mmHg, Torr]. In the first calculation method, the value in millimeters of water [mmH₂O, mmWS] is divided by the rounded conversion factor of 13.5951. The second method multiplies the value in millimeters of water [mmH₂O, mmWS] by the rounded conversion factor of 0.0736.
- Millimeters of mercury [mmHg, Torr] ≈ millimeters of water [mmH₂O, mmWS] ÷ 13.5951
- Millimeters of mercury [mmHg, Torr] ≈ millimeters of water [mmH₂O, mmWS] * 0.0736
However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of millimeters of water [mmH₂O, mmWS] to millimeters of mercury [mmHg, Torr] can be achieved using the following calculation method.
- Millimeters of mercury [mmHg, Torr] = millimeters of water [mmH₂O, mmWS] * 7,453.054 ÷ 101,325
Convert millimeters of mercury to millimeters of water
Converting millimeters of mercury [mmHg, Torr] 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 millimeters of mercury [mmHg, Torr] is multiplied by the rounded conversion factor of 13.5951. The second variant is a division. Here, the value in millimeters of mercury [mmHg, Torr] is divided by the rounded conversion factor of 0.0736.
- Millimeters of water [mmH₂O, mmWS] ≈ millimeters of mercury [mmHg, Torr] * 13.5951
- Millimeters of water [mmH₂O, mmWS] ≈ millimeters of mercury [mmHg, Torr] ÷ 0.0736
However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of millimeters of mercury [mmHg, Torr] to millimeters of water [mmH₂O, mmWS] can be achieved using the following calculation method.
- Millimeters of water [mmH₂O, mmWS] = millimeters of mercury [mmHg, Torr] ÷ 7,453.054 * 101,325
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Millimeters of water
Millipascals
Millimeters of water
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Millimeters of water
Pascals
Millimeters of water
Psi
Millimeters of water
Standard atmospheres
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