# दाब रूपांतरक

> टायर, हवामान आणि रक्तदाबाच्या मापांसाठी अचूक गुणक साखळीने psi ते bar, bar ते psi, kPa, atm, hPa, mmHg आणि inHg मध्ये रूपांतर करा.

परस्परसंवादी आवृत्ती: https://www.calcopenly.com/mr/conversion/pressure-converter
विषय: एकक रूपांतरक

Each pressure unit is a fixed number of pascals (newtons per square metre). The bar is exactly 100,000 Pa, the standard atmosphere 101,325 Pa and the torr 1/760 atm. The psi, one pound-force per square inch, is about 6,894.757 Pa, fixed exactly by the 1959 pound, standard gravity (9.80665 m/s²) and the 25.4 mm inch.

The default converts a 32 psi tyre pressure to 2.2063 bar. Weather maps use hectopascals (1 hPa = 1 mbar; standard sea-level pressure is 1,013.25 hPa), and blood pressure is recorded in millimetres of mercury.

Gauge and absolute readings convert with the same factor but are not interchangeable: a tyre gauge shows pressure above the surrounding air, so 32 psi on the gauge is about 46.7 psi absolute at sea level. The inch of mercury uses the conventional value at 0 °C and is marked approximate.

## इनपुट

- **मूल्य**: मूळ एककातील संख्या किंवा स्वतःच्या एककासह दिलेली संख्या
- **पासून** (पर्याय: pascal (Pa), hectopascal (hPa), kilopascal (kPa), megapascal (MPa), बार, standard atmosphere (atm), pound per square inch (psi), millimetre of mercury (mmHg), torr (Torr), inch of mercury (inHg), kilogram-force per cm² (kgf/cm²))
- **मध्ये** (पर्याय: pascal (Pa), hectopascal (hPa), kilopascal (kPa), megapascal (MPa), बार, standard atmosphere (atm), pound per square inch (psi), millimetre of mercury (mmHg), torr (Torr), inch of mercury (inHg), kilogram-force per cm² (kgf/cm²))

## निकाल

- रूपांतरित मूल्य — मुख्य निकाल
- रूपांतरण
- रूपांतरण गुणक
- अचूकता

## सूत्र

$$
\begin{gathered} x_{\text{to}} = x_{\text{from}} \times \dfrac{f_{\text{from}}}{f_{\text{to}}} \\ f = \text{one unit expressed in } \text{Pa} \end{gathered}
$$

## सोडवलेली उदाहरणे

### 32 psi tyre pressure in bar

- मूल्य: 32 psi
- पासून: pound per square inch (psi)
- मध्ये: बार
- **रूपांतरित मूल्य: 2.2063223338 bar**
- पडताळणीचा स्रोत: 1 psi = 4.4482216152605 N ÷ (0.0254 m)² (NIST SP 811 App. B); 32 psi = 8896443230521/4032250000000 bar (Python 3.8 fractions from the legal definitions)

### 1 atm in psi

- मूल्य: 1 atm
- पासून: standard atmosphere (atm)
- मध्ये: pound per square inch (psi)
- **रूपांतरित मूल्य: 14.6959487755 psi**
- पडताळणीचा स्रोत: 101325 Pa ÷ 6894.757293168… Pa (Python 3.8 fractions from the legal definitions)

### 760 torr is 1 atm

- मूल्य: 760 Torr
- पासून: torr (Torr)
- मध्ये: standard atmosphere (atm)
- **रूपांतरित मूल्य: 1 atm**
- **अचूकता: अचूक**
- पडताळणीचा स्रोत: 1 torr = 101325/760 Pa by definition (NIST SP 811 App. B)

### 1 inHg (conventional value)

- मूल्य: 1 inHg
- पासून: inch of mercury (inHg)
- मध्ये: pascal (Pa)
- **रूपांतरित मूल्य: 3,386.389 Pa**
- **अचूकता: अंदाजे**
- पडताळणीचा स्रोत: NIST SP 811 App. B.9: inch of mercury (0 °C) = 3.386389 E+03 Pa

## प्रश्न

### How do I convert psi to bar?

Divide by 14.5038, or multiply by 0.0689476. A bar is 100,000 Pa and a psi 6,894.757 Pa, so 1 bar = 14.5038 psi. A 32 psi tyre is 2.2063 bar, and a 2.5 bar tyre is 36.26 psi.

### Is 1 bar the same as 1 atmosphere?

No, though they are within 1.3%. The bar is exactly 100,000 Pa, while the standard atmosphere is exactly 101,325 Pa, which is 1.01325 bar, 14.696 psi or 760 mmHg. The atmosphere was set to match average sea-level air pressure, which is why weather charts centre on 1,013.25 hPa.

### What is the difference between psig and psia?

psig is gauge pressure, measured relative to the surrounding air; psia is absolute pressure, measured from a vacuum. At sea level psia = psig + 14.696. Tyre and compressor gauges read psig, so a flat tyre shows 0 psig while still holding 14.7 psia of air. The converter treats both alike, so keep input and output the same kind.

### Are mmHg and torr the same?

Almost. A torr is exactly 1/760 of a standard atmosphere, 133.322368 Pa, while the conventional millimetre of mercury is 133.322387415 Pa; they differ by about 0.14 parts per million. For blood pressure the difference never matters: 120/80 mmHg is 16.0/10.7 kPa either way.

### How do I convert inches of mercury to hPa?

Multiply by 33.8639: 29.92 inHg is 1,013.2 hPa, the standard altimeter setting in US aviation. This converter uses the conventional inch of mercury at 0 °C, 3,386.389 Pa (NIST SP 811), and marks results that use it as approximate because mercury's density changes with temperature.

### “दाब रूपांतरक” किती अचूक आहे?

अचूकता तुमच्या इनपुटवर आणि पद्धतीच्या गृहीतकांवर अवलंबून असते. दशांश गणना 50 सार्थ अंक वापरते, पण अंदाज, संख्यात्मक पद्धती आणि मूळ डेटा कमी अचूक असू शकतात; दाखवलेल्या मूल्यांचे पूर्णांकन केल्याने या मर्यादा दूर होत नाहीत. स्वतंत्र स्रोतांतील सोडवलेल्या उदाहरणांशी पडताळणी: ४. उदाहरणार्थ, “32 psi tyre pressure in bar” ची पडताळणी 1 psi = 4.4482216152605 N ÷ (0.0254 m)² (NIST SP 811 App. B); 32 psi = 8896443230521/4032250000000 bar (Python 3.8 fractions from the legal definitions) याच्याशी केली आहे.

### या पद्धतीचा स्रोत कोणता?

NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors; NIST Handbook 44, Appendix C — General tables of units of measurement.

## स्रोत

- [NIST SP 811 (2008), Guide for the Use of the SI, Appendix B — conversion factors](https://www.nist.gov/pml/special-publication-811)
- [NIST Handbook 44, Appendix C — General tables of units of measurement](https://www.nist.gov/pml/owm/nist-handbook-44-current-edition)