Convert Bar to Kilopounds per Square Inch
Instantly convert Bar (bar) to Kilopounds per Square Inch (ksi) with our free online calculator.
Formula: bar to ksi — multiply by 0.0145038
Reference Table
| Bar (bar) | Kilopounds per Square Inch (ksi) |
|---|---|
| 1 | 0.0145038 |
| 5 | 0.0725188 |
| 10 | 0.145038 |
| 25 | 0.362594 |
| 50 | 0.725188 |
| 100 | 1.45038 |
How to Convert Bar to Kilopounds per Square Inch
Formula
To convert Bar (bar) to Kilopounds per Square Inch (ksi): multiply by 0.0145038
Step-by-Step
- Start with your value in Bar (bar).
- Multiply by 0.0145038 to perform the conversion.
- The result is your value expressed in Kilopounds per Square Inch (ksi).
Conversion Factor
1 bar = 0.0145038 ksi
Reverse Factor
1 ksi = 68.9476 bar
Worked Example
Convert 25 Bar to Kilopounds per Square Inch: 25 bar = 0.362594 ksi
About Bar (bar)
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately the average sea-level atmospheric pressure on Earth (1 atm = 1.01325 bar). Defined by IUPAC and accepted for use with the SI by the BIPM, the bar is not itself an SI-proper unit but is universally recognized in engineering. Bars are the default unit in European industry for compressed gas systems (compressed air at 6-10 bar shop pressure), hydraulics (mobile equipment at 200-400 bar working pressure), and chemical process plants. Car tire pressures in much of the world outside the US are specified in bar (a typical passenger car runs ~2.2 bar / 32 psi cold). Gauges on scuba cylinders (200 bar fill / ~2900 psi), brewery CO₂ tanks, fire suppression systems, and espresso machines (9 bar extraction pressure) all read in bar. 1 bar = 14.504 psi = 100 kPa = 0.9869 atm.
About Kilopound per Square Inch (ksi)
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
Quick Facts
- 1 Bar equals 0.0145038 Kilopounds per Square Inch
- 1 Kilopound per Square Inch equals 68.9476 Bar
- Bar is a unit of pressure
- Kilopound per Square Inch 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
- The Kilopound per Square Inch belongs to the imperial system
Common Bar to Kilopound per Square Inch Conversions
| Bar (bar) | Kilopounds per Square Inch (ksi) |
|---|---|
| 0.1 | 0.00145038 |
| 0.5 | 0.00725188 |
| 1 | 0.0145038 |
| 2 | 0.0290075 |
| 5 | 0.0725188 |
| 10 | 0.145038 |
| 14.696 | 0.213147 |
| 15 | 0.217557 |
| 20 | 0.290075 |
| 25 | 0.362594 |
| 50 | 0.725188 |
| 100 | 1.45038 |
| 150 | 2.17557 |
| 200 | 2.90075 |
| 500 | 7.25188 |
| 1000 | 14.5038 |
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 the average sea-level atmospheric pressure on Earth (1 atm = 1.01325 bar). Defined by IUPAC and accepted for use with the SI by the BIPM, the bar is not itself an SI-proper unit but is universally recognized in engineering. Bars are the default unit in European industry for compressed gas systems (compressed air at 6-10 bar shop pressure), hydraulics (mobile equipment at 200-400 bar working pressure), and chemical process plants. Car tire pressures in much of the world outside the US are specified in bar (a typical passenger car runs ~2.2 bar / 32 psi cold). Gauges on scuba cylinders (200 bar fill / ~2900 psi), brewery CO₂ tanks, fire suppression systems, and espresso machines (9 bar extraction pressure) all read in bar. 1 bar = 14.504 psi = 100 kPa = 0.9869 atm.
It belongs to the metric measurement system.
Bar are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Kilopounds per Square Inch
The Kilopound per Square Inch (symbol: ksi) is a unit of pressure. An imperial unit of pressure equal to exactly 1,000 psi (≈ 6.895 MPa). KSI is the standard US unit for reporting material strength: structural-steel yield (A36 = 36 ksi, A992 W-shapes = 50 ksi, A572-Gr50 plate = 50 ksi, A514 quenched-tempered = 100 ksi), bolt-grade tensile strength (SAE Grade 5 = 120 ksi, Grade 8 = 150 ksi, ASTM A325 = 105-120 ksi, A490 = 150 ksi), aluminum aerospace alloys (7075-T6 ultimate = ~83 ksi), and the S-N fatigue curves in MMPDS / ASME Section VIII Division 3. US structural codes (AISC Steel Construction Manual, AASHTO LRFD Bridge Design), aerospace stress reports, and oil-and-gas casing specifications (API 5CT) all express allowables and yield in ksi. When cross-referencing US alloys against international material databases (typically MPa), the conversion ksi × 6.895 → MPa is essentially universal.
It belongs to the imperial measurement system.
Kilopounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Bar to Kilopounds per Square Inch?
Engineers, mechanics, and scientists frequently need to convert pressure between Bar and Kilopounds per Square Inch 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 Kilopounds per Square Inch?
A metric unit of pressure equal to exactly 100,000 pascals (100 kPa), approximately the average sea-level atmospheric pressure on Earth (1 atm = 1. To convert Bar to Kilopounds per Square Inch, multiply by 0.0145038. For example, 25 bar equals 0.362594 ksi.
How many Kilopounds per Square Inch are in 1 Bar?
There are 0.0145038 Kilopounds per Square Inch in 1 Bar.
How many Bar are in 1 Kilopound per Square Inch?
There are 68.9476 Bar in 1 Kilopound per Square Inch.
What is the formula for Bar to Kilopound per Square Inch conversion?
The formula is: multiply by 0.0145038. This means 1 bar = 0.0145038 ksi.
Is a Bar bigger than a Kilopound per Square Inch?
Yes. One Bar is larger than one Kilopound per Square Inch because 1 bar equals 0.0145038 ksi, which is less than 1.
When do you need to convert between Bar and Kilopounds per Square Inch?
An imperial unit of pressure equal to exactly 1,000 psi (≈ 6. Bar and Kilopound per Square Inch 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.