ATM Pressure Converter
Convert atmospheres (atm) to and from Pascals, kPa, bar, psi, mmHg, Torr, and inHg. Bidirectional conversion with preset values, reference table, and quick formulas.
PSI to ATM Converter
Convert between PSI and atmospheres with bidirectional conversion, reference pressures, and diving depth equivalents.
psi
Atmospheres (atm)⧉
0.07 atm
Converted from psi
Kilopascals (kPa)⧉
6.89 kPa
Converted from psi
Bar⧉
0.07 bar
Converted from psi
mmHg⧉
51.72 mmHg
Converted from psi
Pascals (Pa)⧉
6,894.76 Pa
Converted from psi
Conversion Table
| psi | atm | kPa | bar | mmHg | Pa |
|---|---|---|---|---|---|
| 0.01 | 0.00 | 0.07 | 0.00 | 0.52 | 68.95 |
| 0.10 | 0.01 | 0.69 | 0.01 | 5.17 | 689.48 |
| 0.50 | 0.03 | 3.45 | 0.03 | 25.86 | 3,447.38 |
| 1.00 | 0.07 | 6.89 | 0.07 | 51.72 | 6,894.76 |
| 2.00 | 0.14 | 13.79 | 0.14 | 103.43 | 13,789.52 |
| 5.00 | 0.34 | 34.47 | 0.34 | 258.58 | 34,473.80 |
| 10.00 | 0.68 | 68.95 | 0.69 | 517.15 | 68,947.60 |
| 50.00 | 3.40 | 344.74 | 3.45 | 2,585.75 | 344,738.00 |
| 100.00 | 6.80 | 689.48 | 6.89 | 5,171.51 | 689,476.00 |
| 1,000.00 | 68.05 | 6,894.76 | 68.95 | 51,715.10 | 6,894,760.00 |
Quick Formulas
psi → atm⧉
atm = psi × 14.695943
Conversion factor
atm → kPa⧉
kPa = atm × 0.009869
Conversion factor
kPa → bar⧉
bar = kPa × 100
Conversion factor
bar → mmHg⧉
mmHg = bar × 0.001333
Conversion factor
mmHg → Pa⧉
Pa = mmHg × 0.007501
Conversion factor
Pa → psi⧉
psi = Pa × 6894.76
Conversion factor
Planning notes, formulas, and examples
About the PSI to ATM Converter
PSI and atmospheres are both common pressure units, but they appear in different settings. PSI is familiar in tires, compressors, and US engineering, while atmospheres show up in chemistry, gas laws, and diving discussions.
This converter handles both directions and keeps the relationship clear: 1 atmosphere is about 14.696 psi. It also shows related pressure units so you can move from a tire or equipment reading into a science or engineering context without doing another conversion.
Use it when a pressure is given in psi but needs to be understood in atm, or vice versa. It is also useful when you want to compare a gauge-style reading with the baseline of sea-level atmospheric pressure, such as in gas-law exercises, chamber tests, or rough depth-pressure discussions. Seeing the atm result alongside psi helps you judge whether a system is near ambient pressure, moderately pressurized, or far above the normal atmospheric reference.
When This Page Helps
PSI is practical for US equipment and gauges, while atmospheres are practical for gas-law work and depth-related pressure comparisons. This page bridges those two views directly and keeps the common reference point of standard atmospheric pressure visible. It is especially handy when you need to explain the same number to both a lab or classroom audience and someone looking at a psi gauge.
How to Use the Inputs
- Choose PSI → ATM or ATM → PSI.
- Enter the pressure value.
- Read the converted result and any supporting units.
- Use presets for common reference pressures.
- Compare the value with standard atmospheric pressure when needed.
- Check the examples for tire, gas, or diving-style use cases.
- Use the formula section if you need the manual relationship.
Formula used
ATM = PSI ÷ 14.6959
PSI = ATM × 14.6959
1 atm = 101,325 Pa = 14.6959 psiExample Calculation
Result: 2.18 atm
32 psi ÷ 14.6959 = 2.18 atm. This is a little more than twice standard atmospheric pressure.
Tips & Best Practices
- 1 atm is about 14.7 psi.
- A typical car tire at 32 psi is about 2.18 atm.
- Absolute pressure at sea level starts around 1 atm before any added gauge pressure.
- In diving, total pressure increases by roughly 1 atm for every 10 meters of seawater depth.
- Gas-law problems usually prefer atm, while shop gauges usually prefer psi.
- For quick checks, divide psi by 15 to estimate atm.
PSI Versus Atmospheres
PSI expresses pressure in pounds per square inch, which fits mechanical gauges and US customary engineering. Atmospheres express pressure relative to standard sea-level atmospheric pressure, which makes them intuitive in chemistry and diving discussions.
Where This Conversion Shows Up
This conversion appears when comparing tire or compressor readings with scientific references, when using gas-law formulas, and when describing total pressure underwater or in pressurized systems. The unit choice often depends more on the field than on the size of the pressure.
Absolute Context Matters
An atmosphere is naturally tied to ambient pressure, while many gauges display pressure relative to the surrounding air. If a problem mixes absolute and gauge pressure, make sure you know whether the starting value already includes the ambient 1 atm.
Sources & Methodology
Last updated:
Frequently Asked Questions
1 atmosphere equals about 14.696 psi. That is the standard sea-level reference used in many chemistry and engineering contexts.
Divide psi by 14.6959. The result tells you how many standard atmospheres the pressure represents.
Multiply atmospheres by 14.6959. This is useful when a gas-law or diving value needs to be compared with a psi-based gauge.
Standard atmospheric pressure is 1 atm, which equals 14.696 psi, 101.325 kPa, and 760 mmHg.
Many gas-law equations and reference constants are commonly taught and tabulated in atmospheres. Using atm keeps the numbers close to the standard reference pressure instead of forcing another unit change first.
Usually psi in the US, and often kPa or bar elsewhere. ATM is more common in scientific context than on tires.
More in this topic
ATM to Pascals Converter
Convert between atmospheres (atm) and Pascals (Pa). Bidirectional converter with kPa, hPa, mbar, and bar outputs, reference table, and preset values.
Bar to ATM Converter
Convert between bar and atmospheres (atm) with bidirectional conversion, PSI/kPa/mmHg equivalents, reference table, and preset values.