Conventional millimetres of mercury to Gigapascals converter
Convert Conventional millimetres of mercury (mmHg (0 °C)) to Gigapascals (GPa). Calculate a value, check the formula and compare common measurements.
Result for the values shown.
Calculations run in your browser.
What to enter
| Input | Meaning and units |
|---|---|
| Value | Enter value using the definition in the method and example. |
| From | Select the unit or currency in which the entered number is currently expressed. |
| To | Select the unit or currency you need for the answer. |
Understanding your result
The converted value describes the same pressure quantity in the selected target unit. Display rounding does not add precision to the original measurement.
Common mistakes
- Confusing the source and target units, or overlooking a prefix or case-sensitive symbol.
- Expecting a unit conversion to change gauge pressure into absolute pressure.
Check your calculation
- Convert to the target unit and then reverse the direction. Within display rounding, you should recover the original value.
Read the pressure measurement guide · Calculation checks, sources and review limits
How do I convert conventional millimetres of mercury to gigapascals?
Enter the value in conventional millimetres of mercury to find the same pressure quantity in gigapascals. The number changes to match the unit; the underlying quantity stays the same. Check the definitions below when a unit has more than one convention.
Common uses
- Interpret pressure specifications in a familiar unit.
- Compare pressure readings using consistent conventions.
How it works
For the displayed direction, 1 mmHg (0 °C) equals 1.33322387415e-7 GPa. The engine converts through the shared pressure base quantity. Atmospheres are standard atmospheres. Mercury-column factors use the conventional 0 °C definition; torr is 1/760 of a standard atmosphere. The multiplier is derived from the two centralized unit factors. Keep full precision until the final result; displayed answers use up to 12 significant digits. SI prefixes specify powers of ten: femto 10^-15, pico 10^-12, nano 10^-9, micro 10^-6, milli 10^-3, kilo 10^3, mega 10^6, giga 10^9 and tera 10^12. Unit symbols are case-sensitive. The numerical conversion uses the ratio of the source and target scale factors.
Worked example
10 mmHg (0 °C) converts to 0.00000133322387415 GPa. For the reverse direction, swap the units and enter 0.00000133322387415 GPa; the result is approximately 10 mmHg (0 °C).
FAQ
How do I convert mmHg (0 °C) to GPa?
GPa = mmHg (0 °C) × 1.33322387415e-7
Which definition is used?
Atmospheres are standard atmospheres. Mercury-column factors use the conventional 0 °C definition; torr is 1/760 of a standard atmosphere.
Common values
Use “Swap units” above for the reverse conversion. Values below are rounded to six significant digits.
| Conventional millimetres of mercury | Gigapascals |
|---|---|
| 1 | 1.33322e-7 |
| 5 | 6.66612e-7 |
| 10 | 0.00000133322 |
| 20 | 0.00000266645 |
| 30 | 0.00000399967 |
| 50 | 0.00000666612 |
| 100 | 0.0000133322 |