Example: 1 millimeter of mercury [mmHg] equals 1 torr [Torr].
Examples
1 millimeter of mercury [mmHg] = 1 torr [Torr]
2 millimeter of mercury [mmHg] = 2 torr [Torr]
5 millimeter of mercury [mmHg] = 5.000001 torr [Torr]
10 millimeter of mercury [mmHg] = 10.000001 torr [Torr]
20 millimeter of mercury [mmHg] = 20.000003 torr [Torr]
25 millimeter of mercury [mmHg] = 25.000004 torr [Torr]
Practical Uses for millimeter mercury to torr
quick homework checksshopping and product comparisonstravel planningprofessional estimatesDIY and household measurementsgeneral reference
Sources and Accuracy
Pressure conversions use pascal as the reference unit and include common engineering, weather, tire, and laboratory pressure units.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
About These Units
millimeter of mercury [mmHg]
Definition
The millimeter of mercury (mmHg) is a pressure unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use millimeter of mercury when comparing pressure values, checking specifications, converting between systems, or preparing quick estimates.
torr [Torr]
Definition
The torr (Torr) is a pressure unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use torr when comparing pressure values, checking specifications, converting between systems, or preparing quick estimates.
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How to Convert
Enter the value in the “From value” field.
Confirm the source unit is millimeter of mercury [mmHg].