PSI → Bar
Convert PSI to bar or bar to PSI for pressure measurements.
Convert PSI to bar or bar to PSI for pressure measurements.
PSI and bar are both units of pressure measurement, but they're used in different parts of the world. PSI (pounds per square inch) is standard in North America and measures the force of one pound applied to one square inch of area. Bar is the metric equivalent, used throughout Europe and most of the rest of the world. They measure exactly the same thing—pressure—just on different scales.
One bar equals approximately 14.5 PSI, or one PSI equals about 0.069 bar. If you work with equipment that comes from different regions, follow international standards, or deal with imported machinery, you'll regularly encounter both units. Car tires, air compressors, HVAC systems, hydraulic equipment, and pressure gauges often display one unit while their manuals or specifications show the other.
This free converter instantly translates between the two, so you don't have to memorize the math or look it up elsewhere. Use it for automotive work, construction equipment, pneumatic tools, hydraulic systems, or any pressure-related calculation.
The conversion uses a simple mathematical formula: multiply PSI by 0.0689476 to get bar, or multiply bar by 14.5038 to get PSI. This converter does that calculation instantly as you type.
To convert PSI to bar: Enter any PSI value in the first field. The bar equivalent appears automatically in the second field.
To convert bar to PSI: Enter any bar value in the second field. The PSI equivalent appears automatically in the first field.
The calculator works bidirectionally—you can enter a value in either field and get the opposite unit. It handles decimals and large numbers, so you can convert everything from tire pressure (30 PSI) to industrial hydraulic systems (5,000+ PSI).
Note: This tool converts absolute pressure. If you're working with gauge pressure (pressure above atmospheric), make sure you're using the right starting value.
1 PSI = 0.0689476 bar
PSI (pounds per square inch) is used in the United States and measures pressure in imperial units. Bar is the metric equivalent used in Europe and most countries. 1 bar ≈ 14.5 PSI. They measure the same thing but on different scales.
Multiply the PSI value by 0.0689476. For a quick mental estimate, multiply by 0.07. Example: 100 PSI × 0.0689476 = 6.89 bar. The quick estimate would be 100 × 0.07 = 7 bar (off by only 1%).
100 PSI ≈ 6.89 bar.
Typical car tires are 2.0–2.5 bar (29–36 PSI). Always check your vehicle's door jamb sticker for the manufacturer's recommended pressure—don't trust the maximum shown on the tire sidewall. European cars often show bar; American cars show PSI.
2.5 bar equals 36.26 PSI. This is a common tire pressure in Europe.
3 bar equals 43.51 PSI. This pressure is typical for van tires and some light-duty pneumatic systems.
Standard portable air compressors operate at 90–120 PSI (6.2–8.3 bar). Industrial models can go significantly higher, sometimes exceeding 300 PSI. Always check your specific compressor's rating.
The United States uses imperial units (inches, pounds, degrees Fahrenheit), while Europe and most of the world use metric units. Bar is part of the metric system. When working across regions or with international equipment, you need to convert between the two.
Use this reference chart for the most common PSI to bar conversions in construction, automotive, and HVAC applications.
| PSI | Bar | Common use |
|---|---|---|
| 15 PSI | 1.03 bar | Low tire pressure warning |
| 30 PSI | 2.07 bar | Standard car tire (compact) |
| 32 PSI | 2.21 bar | Standard car tire (common) |
| 35 PSI | 2.41 bar | SUV / light truck tire |
| 40 PSI | 2.76 bar | Max cold inflation (most cars) |
| 50 PSI | 3.45 bar | Van / minibus tires |
| 60 PSI | 4.14 bar | Light truck / bicycle tires |
| 80 PSI | 5.52 bar | Road bicycle tires |
| 100 PSI | 6.89 bar | Air compressor — standard |
| 120 PSI | 8.27 bar | Air compressor — high |
| 150 PSI | 10.34 bar | Hydraulic systems |
| 200 PSI | 13.79 bar | Industrial hydraulics |
| 250 PSI | 17.24 bar | High-pressure systems |
| 300 PSI | 20.68 bar | Heavy industrial |
| 500 PSI | 34.47 bar | Hydraulic press systems |
| 1000 PSI | 68.95 bar | High-pressure hydraulics |
| 3000 PSI | 206.84 bar | Pressure washing / fire suppression |
| Bar | PSI | Common use |
|---|---|---|
| 0.5 bar | 7.25 PSI | Very low pressure |
| 1 bar | 14.50 PSI | Atmospheric pressure approx. |
| 1.5 bar | 21.76 PSI | Low tire pressure |
| 2 bar | 29.01 PSI | Standard European tire pressure |
| 2.2 bar | 31.91 PSI | Common car tire |
| 2.5 bar | 36.26 PSI | SUV / larger vehicle tires |
| 3 bar | 43.51 PSI | Van tires |
| 4 bar | 58.02 PSI | Bicycle / light truck tires |
| 5 bar | 72.52 PSI | Air tools / compressors |
| 6 bar | 87.02 PSI | Standard compressor output |
| 7 bar | 101.53 PSI | High compressor output |
| 10 bar | 145.04 PSI | Hydraulic systems |
| 20 bar | 290.08 PSI | Industrial hydraulics |
| 50 bar | 725.19 PSI | High-pressure industrial |
| 100 bar | 1450.38 PSI | Extreme pressure systems |
Most car tires are inflated to 30–35 PSI (2.07–2.41 bar). Check your door jamb sticker for the manufacturer's recommended pressure — not the maximum printed on the tire sidewall. European tire gauges typically display in bar; US gauges display in PSI.
Portable air compressors for DIY use typically operate at 90–120 PSI (6.2–8.3 bar). Pneumatic nail guns need 70–120 PSI depending on the tool. Impact wrenches typically require 90 PSI minimum.
Construction equipment hydraulics commonly operate at 3,000–5,000 PSI (207–345 bar). Excavators, forklifts, and cranes use hydraulic circuits in this range.
Residential water supply pressure is typically 40–80 PSI (2.8–5.5 bar). HVAC refrigerant systems vary by refrigerant type — R-410A operates at around 200–400 PSI on the high side.
These are the most searched PSI to bar conversions. The conversion factor is 1 PSI = 0.0689476 bar.
| PSI value | Bar equivalent | Common use |
|---|---|---|
| 20 PSI to bar | 1.379 bar | Low tire pressure warning |
| 30 PSI to bar | 2.068 bar | Standard car tire (compact) |
| 32 PSI to bar | 2.206 bar | Most common car tire pressure |
| 33 PSI to bar | 2.275 bar | Common front tire pressure |
| 35 PSI to bar | 2.413 bar | SUV / light truck tire |
| 36 PSI to bar | 2.482 bar | Common rear tire pressure |
| 40 PSI to bar | 2.758 bar | Max cold inflation (most cars) |
| 50 PSI to bar | 3.447 bar | Van / light truck tires |
| 60 PSI to bar | 4.137 bar | Bicycle / road tires |
| 80 PSI to bar | 5.516 bar | Road bike tires |
| 100 PSI to bar | 6.895 bar | Air compressor standard output |
| 120 PSI to bar | 8.274 bar | Air compressor high output |
| 150 PSI to bar | 10.342 bar | Hydraulic systems |
| 2.8 bar to PSI | 40.61 PSI | European tire pressure marking |
| 2.5 bar to PSI | 36.26 PSI | SUV tire in European spec |
| 2.2 bar to PSI | 31.91 PSI | Common European car tire |
The exact conversion formula is: Bar = PSI × 0.0689476
For a quick mental estimate, multiply PSI by 0.07. This gives results accurate to within 2%.
To convert bar to PSI: PSI = Bar × 14.5038
For a quick estimate, multiply bar by 14.5. So 2.5 bar × 14.5 = 36.25 PSI (actual: 36.26 PSI).
PSI (pounds per square inch) is the standard pressure unit in the United States. Bar is used in Europe and most of the rest of the world. Car tires, air compressors, and HVAC equipment are often labeled in one unit while manuals or gauges show the other — making this conversion a daily need for mechanics, engineers, and tradespeople working with international equipment.