atm to mmHg Converter - Standard Atmosphere to Millimeters of Mercury
Standard Atmosphere (atm) to Millimeters of Mercury (mmHg)
Direct answer
1 atm = 760.002100179 mmHg
mmHg = atm × 760.002100179
Converter
Conversion formula
mmHg = atm × 760.002100179
atm = mmHg × 0.001315785838
Example: 10 atm = 10 × 760.002100179 = 7,600.02100179 mmHg.
Common conversion table
| atm | mmHg |
|---|---|
| 1 atm | 760.002100179 mmHg |
| 2 atm | 1,520.00420036 mmHg |
| 5 atm | 3,800.01050089 mmHg |
| 10 atm | 7,600.02100179 mmHg |
| 20 atm | 15,200.0420036 mmHg |
| 50 atm | 38,000.1050089 mmHg |
| 100 atm | 76,000.2100179 mmHg |
| 1,000 atm | 760,002.100179 mmHg |
Conversion derivation
Express both atm and mmHg in the same base unit Pa (pascal), then cancel the shared base unit.
- 1
Rewrite atm in the base unit
- 2
Rewrite mmHg in the base unit
- 3
Forward conversion
- 4
Reverse conversion
AI explanation for this conversion
This pre-generated explanation is schema-checked. Numeric results still come from the page formula and calculator.
Explanation: Standard Atmosphere to Millimeters of Mercury
The conversion factor between standard atmosphere (atm) and millimeters of mercury (mmHg) is derived by expressing both units in terms of the pascal (Pa), the SI base unit for pressure. This allows a direct ratio between the two units.
Definition
The standard atmosphere (atm) is a unit of pressure defined as exactly 101,325 pascals. The millimeter of mercury (mmHg) is a unit of pressure defined as the pressure exerted by a column of mercury 1 millimeter high, given as 133.322 pascals.
Principle
To find how many mmHg are in one atm, you divide the pascal equivalent of 1 atm by the pascal equivalent of 1 mmHg. The result is the conversion factor (760.002100179). The inverse factor is found by reversing the division.
Assumptions
- The definitions used are the exact values provided: 1 atm = 101,325 Pa and 1 mmHg = 133.322 Pa.
- The conversion is based on a direct algebraic cancellation of the pascal (Pa) unit from the ratio.
Cautions
- The conversion factor is calculated from the given definitions; different definitions for mmHg (e.g., based on standard gravity) can lead to slightly different values.
- For practical use, the result should be rounded to the precision required by your specific calculation.
FAQ
How many mmHg are in 1 atm?
1 atm = 760.002100179 mmHg.
How many mmHg are in 10 atm?
10 atm = 7,600.02100179 mmHg.
How many mmHg are in 100 atm?
100 atm = 76,000.2100179 mmHg.
What is the formula to convert atm to mmHg?
Use mmHg = atm × 760.002100179.
How many atm are in 1 mmHg?
1 mmHg = 0.001315785838 atm.
What should I check when converting atm to mmHg?
Use the conversion factor and round the result to the precision required by your calculation.