kPa to Torr Converter

Convert Kilopascals to Torr with precision and ease

Kilopascal

kPa

Torr

Quick Conversions

Conversion Formula

From kPa to Torr:

Torr = kPa × 7.50061682704

From Torr to kPa:

kPa = Torr × 0.133322368421

Conversion Steps

Converting between kilopascals and torr is straightforward using the conversion factor. Since 1 kPa equals approximately 7.50062 torr, multiply your kilopascal value by this factor to get the result in torr.

Example 1: Convert 15 kPa to Torr

Step 1: Multiply the kPa value by 7.50061682704

Step 2: 15 × 7.50061682704 = 112.5092524056

Result: 15 kPa = 112.51 Torr

Example 2: Convert 760 Torr to kPa

Step 1: Multiply the Torr value by 0.133322368421

Step 2: 760 × 0.133322368421 = 101.325

Result: 760 Torr = 101.325 kPa (Standard atmospheric pressure)

Conversion Reference Table

Kilopascal (kPa)	Torr (Torr)
0.01 kPa	0.0750061683 Torr
0.1 kPa	0.7500616827 Torr
0.5 kPa	3.7503084135 Torr
1 kPa	7.5006168270 Torr
2 kPa	15.0012336541 Torr
3 kPa	22.5018504811 Torr
5 kPa	37.5030841352 Torr
10 kPa	75.0061682704 Torr
15 kPa	112.5092524056 Torr
20 kPa	150.0123365408 Torr
25 kPa	187.5154206760 Torr
50 kPa	375.0308413520 Torr
75 kPa	562.5462620280 Torr
100 kPa	750.0616827040 Torr
101.325 kPa	760.0000000000 Torr
150 kPa	1125.0925240560 Torr
200 kPa	1500.1233654080 Torr
500 kPa	3750.3084135200 Torr
1000 kPa	7500.6168270400 Torr

Popular Pressure Conversions

Here are some commonly used pressure conversions in various applications:

Atmospheric Pressure

Standard atmospheric pressure at sea level is 101.325 kPa, which equals exactly 760 Torr. This serves as a reference point for many scientific and engineering calculations.

Vacuum Applications

Low pressure measurements in vacuum systems often use torr. For instance, a medium vacuum of 0.1 kPa equals approximately 0.75 Torr, while high vacuum conditions may reach 0.001 kPa (0.0075 Torr).

Medical Applications

Blood pressure monitors typically measure in kPa or mmHg (equivalent to Torr). Normal blood pressure of 120/80 mmHg equals approximately 16/10.7 kPa or 120/80 Torr.

Related Pressure Units

Kilopascals and torr can be converted to various other pressure units:

Pascal (Pa)

1 kPa = 1,000 Pa

1 Torr = 133.322 Pa

Bar

1 kPa = 0.01 bar

1 Torr = 0.00133322 bar

Atmosphere (atm)

1 kPa = 0.00986923 atm

1 Torr = 0.00131579 atm

PSI

1 kPa = 0.145038 psi

1 Torr = 0.0193368 psi

Millimeter Mercury (mmHg)

1 kPa = 7.50062 mmHg

1 Torr = 1 mmHg

Inch Mercury (inHg)

1 kPa = 0.295300 inHg

1 Torr = 0.0393701 inHg

About Kilopascal and Torr

What is a Kilopascal (kPa)?

The kilopascal is a metric unit of pressure equal to 1,000 pascals. The pascal (Pa) is the SI unit of pressure, defined as one newton per square meter. Kilopascals are widely used in engineering, meteorology, and various scientific fields. Weather reports in many countries express atmospheric pressure in kilopascals, with standard sea-level pressure being 101.325 kPa.

What is a Torr?

The torr is a non-SI unit of pressure named after Evangelista Torricelli, the Italian physicist who invented the barometer. One torr is defined as exactly 1/760 of standard atmospheric pressure. The torr is essentially equivalent to the millimeter of mercury (mmHg), making it particularly useful in vacuum physics, medical applications, and chemistry. It remains popular in laboratories for measuring pressures below atmospheric conditions.

Historical Context

The torr was officially defined in 1954 to honor Torricelli’s contributions to pressure measurement. While the pascal became the official SI unit in 1971, the torr continues to be widely used, especially in fields dealing with vacuum systems and gas pressures. The conversion factor between these units (1 kPa = 7.50062 Torr) stems from their different definitions but provides a precise relationship for practical conversions.

Common Applications

Kilopascals are frequently used in automotive tire pressure specifications, HVAC systems, and structural engineering calculations. They provide a convenient scale for everyday pressures without requiring very large or small numbers. Torr finds extensive use in vacuum technology, mass spectrometry, thin-film deposition, and medical equipment like blood pressure monitors. The choice between these units often depends on industry standards and regional practices.

Frequently Asked Questions

How many torr are in 1 kilopascal?

One kilopascal equals exactly 7.50061682704 torr. For most practical purposes, you can use 7.5 torr as an approximation. This conversion factor is derived from the definitions of both units relative to standard atmospheric pressure.

Is torr the same as mmHg?

Yes, torr and millimeters of mercury (mmHg) are effectively the same. Historically, 1 torr was defined as 1 mmHg, though there is a very slight technical difference due to variations in mercury density with temperature. For practical purposes, they are interchangeable.

Why use torr instead of kPa?

Torr is preferred in certain fields like vacuum technology and medical applications due to historical precedent and convenience. Many laboratory instruments are calibrated in torr, and scientific literature in these fields traditionally uses this unit. Additionally, the torr scale provides intuitive numbers for pressures below atmospheric conditions.

What is standard atmospheric pressure in kPa and Torr?

Standard atmospheric pressure at sea level is defined as 101.325 kilopascals or exactly 760 torr. This standard reference point is used in many scientific calculations and serves as the basis for defining both units.

How do I convert torr to kPa?

To convert torr to kilopascals, multiply the torr value by 0.133322368421. Alternatively, divide the torr value by 7.50061682704. For example, 100 torr × 0.133322 = 13.3322 kPa.

Which countries use kPa for tire pressure?

Most countries that use the metric system specify tire pressure in kilopascals, including Canada, Australia, and many European nations. Typical passenger car tire pressures range from 200 to 300 kPa (approximately 1500 to 2250 torr or 29 to 44 psi).

What pressure range is considered high vacuum in torr and kPa?

High vacuum is typically defined as pressures below 1 millitorr (0.001 torr) or approximately 0.000133 kPa. Ultra-high vacuum extends even lower, below 0.000001 torr (0.000000133 kPa). These extremely low pressures are used in semiconductor manufacturing and surface science research.

Can I use this converter for medical pressure readings?

Yes, this converter works for medical applications where pressure measurements are needed. Blood pressure is typically measured in mmHg (equivalent to torr), while some medical equipment may display readings in kPa. However, always consult healthcare professionals for medical interpretations.