Convert Bar to Atmospheres
Instantly convert Bar (bar) to Atmospheres (atm) with our free online calculator.
Formula: bar to atm — multiply by 0.986923
Reference Table
| Bar (bar) | Atmospheres (atm) |
|---|---|
| 1 | 0.986923 |
| 5 | 4.93462 |
| 10 | 9.86923 |
| 25 | 24.6731 |
| 50 | 49.3462 |
| 100 | 98.6923 |
How to Convert Bar to Atmospheres
Formula
To convert Bar (bar) to Atmospheres (atm): multiply by 0.986923
Step-by-Step
- Start with your value in Bar (bar).
- Multiply by 0.986923 to perform the conversion.
- The result is your value expressed in Atmospheres (atm).
Conversion Factor
1 bar = 0.986923 atm
Reverse Factor
1 atm = 1.01325 bar
Worked Example
Convert 25 Bar to Atmospheres: 25 bar = 24.6731 atm
About Bar (bar)
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. Not an SI unit but widely accepted for engineering use. Bars are the default unit in European industry for compressed gas, hydraulics, and process plants; car tire pressures in much of the world are quoted in bar (about 2.2 bar for a passenger car). Gauges on scuba equipment, brewery CO₂ tanks, and espresso machines typically read in bar.
About Atmosphere (atm)
A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Atmospheres are widely used in chemistry (reaction pressures), diving (depth in multiples of atmospheric pressure), and pressure-sensitive materials research. 1 atm = 1.01325 bar and is slightly different from the "technical atmosphere" (at, 98,066.5 Pa) used in some legacy European engineering — a known source of confusion in older textbooks.
Quick Facts
- 1 Bar equals 0.986923 Atmospheres
- 1 Atmosphere equals 1.01325 Bar
- Bar is a unit of pressure
- Atmosphere is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Bar belongs to the metric system
Common Bar to Atmosphere Conversions
| Bar (bar) | Atmospheres (atm) |
|---|---|
| 0.1 | 0.0986923 |
| 0.5 | 0.493462 |
| 1 | 0.986923 |
| 2 | 1.97385 |
| 5 | 4.93462 |
| 10 | 9.86923 |
| 14.696 | 14.5038 |
| 15 | 14.8038 |
| 20 | 19.7385 |
| 25 | 24.6731 |
| 50 | 49.3462 |
| 100 | 98.6923 |
| 150 | 148.038 |
| 200 | 197.385 |
| 500 | 493.462 |
| 1000 | 986.923 |
Understanding Bar
The Bar (symbol: bar) is a unit of pressure. A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. Not an SI unit but widely accepted for engineering use. Bars are the default unit in European industry for compressed gas, hydraulics, and process plants; car tire pressures in much of the world are quoted in bar (about 2.2 bar for a passenger car). Gauges on scuba equipment, brewery CO₂ tanks, and espresso machines typically read in bar.
It belongs to the metric measurement system.
Bar are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Atmospheres
The Atmosphere (symbol: atm) is a unit of pressure. A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Atmospheres are widely used in chemistry (reaction pressures), diving (depth in multiples of atmospheric pressure), and pressure-sensitive materials research. 1 atm = 1.01325 bar and is slightly different from the "technical atmosphere" (at, 98,066.5 Pa) used in some legacy European engineering — a known source of confusion in older textbooks.
Atmospheres are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Bar to Atmospheres?
Engineers, mechanics, and scientists frequently need to convert pressure between Bar and Atmospheres when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Bar to Atmospheres?
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately equal to Earth's average sea-level atmospheric pressure. To convert Bar to Atmospheres, multiply by 0.986923. For example, 25 bar equals 24.6731 atm.
How many Atmospheres are in 1 Bar?
There are 0.986923 Atmospheres in 1 Bar.
How many Bar are in 1 Atmosphere?
There are 1.01325 Bar in 1 Atmosphere.
What is the formula for Bar to Atmosphere conversion?
The formula is: multiply by 0.986923. This means 1 bar = 0.986923 atm.
Is a Bar bigger than a Atmosphere?
Yes. One Bar is larger than one Atmosphere because 1 bar equals 0.986923 atm, which is less than 1.
When do you need to convert between Bar and Atmospheres?
A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Bar and Atmosphere are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.