Pressure
Browse Pressure conversions1 millimeter of mercury = 0.0013157897 standard atmosphere
How This Conversion Works
Millimeter of mercury and standard atmosphere are both used for pressure conversions. This page converts 1 millimeter of mercury into 0.0013157897 standard atmosphere using the formula shown below.
Use this result for quick checks, comparisons, and everyday reference. For work that depends on exact precision, review the rounding setting and the assumption note before using the number.
The precision controls let you switch between a shorter result, the standard readable result, and scientific notation when the value is very large or very small.
Unit Notes
- 1 millimeter of mercury (mmHg) equals 133.322387415 pascal.
- 1 standard atmosphere (atm) equals 101325 pascal.
Conversion Questions
How do you convert millimeter of mercury to standard atmosphere?
This page converts millimeter of mercury to standard atmosphere using this formula: (1 x 133.322387415) / 101325.
What is 1 millimeter of mercury in standard atmosphere?
1 millimeter of mercury equals 0.0013157897 standard atmosphere.
How many decimals does this converter show?
Displayed to 10 decimal places, trimmed for readability. The precision buttons can also show a shorter result or scientific notation.
Equivalent Values
Nearby Values
- Formula
- (1 x 133.322387415) / 101325
- Rounding
- Displayed to 10 decimal places, trimmed for readability.
- Assumption
- Pressure units use SI definitions. Standard atmosphere is 101325 pascals and millimeter of mercury uses 133.322387415 pascals.