Convert Kilopascals to Millimeters of Mercury
Instantly convert Kilopascals (kPa) to Millimeters of Mercury (mmHg) with our free online calculator.
Formula: kPa to mmHg — multiply by 7.50064
Reference Table
| Kilopascals (kPa) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 | 7.50064 |
| 5 | 37.5032 |
| 10 | 75.0064 |
| 25 | 187.516 |
| 50 | 375.032 |
| 100 | 750.064 |
How to Convert Kilopascals to Millimeters of Mercury
Formula
To convert Kilopascals (kPa) to Millimeters of Mercury (mmHg): multiply by 7.50064
Step-by-Step
- Start with your value in Kilopascals (kPa).
- Multiply by 7.50064 to perform the conversion.
- The result is your value expressed in Millimeters of Mercury (mmHg).
Conversion Factor
1 kPa = 7.50064 mmHg
Reverse Factor
1 mmHg = 0.133322 kPa
Worked Example
Convert 25 Kilopascals to Millimeters of Mercury: 25 kPa = 187.516 mmHg
About Kilopascal (kPa)
A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). Kilopascals are the everyday SI pressure unit outside the US: passenger car tire pressure in Europe and Australia is specified in kPa (typically 220-250 kPa cold), building HVAC duct static pressure is in kPa, and the ISO 5198 / IEC 60534 valve standards quote rated pressures in kPa. Weather forecasters quote surface atmospheric pressure in hectopascals (1 kPa = 10 hPa); a typical sea-level barometric reading is 1013 hPa = 101.3 kPa. The kPa is the standard report unit in clinical respiratory physiology (PaCO₂, PaO₂ in some ICUs) and in scientific gauge pressure measurement. Common conversions: kPa to psi is divide by 6.895; kPa to bar is divide by 100; kPa to mmHg is multiply by 7.5006.
About Millimeters of Mercury (mmHg)
A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9.80665 m/s²) and the standard density of mercury (13,595.1 kg/m³ at 0 °C). The mmHg's contemporary definition rounds to exactly 133.322387415 Pa (NIST SP 811). Despite being non-SI, mmHg remains the international clinical standard for blood pressure measurement ("120 over 80" mmHg) per WHO and ESH guidelines, and is the default unit for intraocular pressure in ophthalmology (normal IOP 10-21 mmHg per Glaucoma Research Foundation) and intracranial pressure monitoring in neurology. Numerically the mmHg is almost identical to the torr (1 mmHg ≈ 1.0000007 torr — the difference is whether one uses the conventional density or the experimentally measured density of mercury). Barometric atmospheric pressure was historically quoted in mmHg before kPa/hPa adoption (760 mmHg = 1 atm = 101.325 kPa).
Quick Facts
- 1 Kilopascal equals 7.50064 Millimeters of Mercury
- 1 Millimeters of Mercury equals 0.133322 Kilopascals
- Kilopascal is a unit of pressure
- Millimeters of Mercury is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Kilopascal belongs to the metric system
Common Kilopascal to Millimeters of Mercury Conversions
| Kilopascals (kPa) | Millimeters of Mercury (mmHg) |
|---|---|
| 0.1 | 0.750064 |
| 0.5 | 3.75032 |
| 1 | 7.50064 |
| 2 | 15.0013 |
| 5 | 37.5032 |
| 10 | 75.0064 |
| 14.696 | 110.229 |
| 15 | 112.51 |
| 20 | 150.013 |
| 25 | 187.516 |
| 50 | 375.032 |
| 100 | 750.064 |
| 150 | 1125.1 |
| 200 | 1500.13 |
| 500 | 3750.32 |
| 1000 | 7500.64 |
Understanding Kilopascals
The Kilopascal (symbol: kPa) is a unit of pressure. A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). Kilopascals are the everyday SI pressure unit outside the US: passenger car tire pressure in Europe and Australia is specified in kPa (typically 220-250 kPa cold), building HVAC duct static pressure is in kPa, and the ISO 5198 / IEC 60534 valve standards quote rated pressures in kPa. Weather forecasters quote surface atmospheric pressure in hectopascals (1 kPa = 10 hPa); a typical sea-level barometric reading is 1013 hPa = 101.3 kPa. The kPa is the standard report unit in clinical respiratory physiology (PaCO₂, PaO₂ in some ICUs) and in scientific gauge pressure measurement. Common conversions: kPa to psi is divide by 6.895; kPa to bar is divide by 100; kPa to mmHg is multiply by 7.5006.
It belongs to the metric measurement system.
Kilopascals are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Millimeters of Mercury
The Millimeters of Mercury (symbol: mmHg) is a unit of pressure. A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9.80665 m/s²) and the standard density of mercury (13,595.1 kg/m³ at 0 °C). The mmHg's contemporary definition rounds to exactly 133.322387415 Pa (NIST SP 811). Despite being non-SI, mmHg remains the international clinical standard for blood pressure measurement ("120 over 80" mmHg) per WHO and ESH guidelines, and is the default unit for intraocular pressure in ophthalmology (normal IOP 10-21 mmHg per Glaucoma Research Foundation) and intracranial pressure monitoring in neurology. Numerically the mmHg is almost identical to the torr (1 mmHg ≈ 1.0000007 torr — the difference is whether one uses the conventional density or the experimentally measured density of mercury). Barometric atmospheric pressure was historically quoted in mmHg before kPa/hPa adoption (760 mmHg = 1 atm = 101.325 kPa).
It belongs to the metric measurement system.
Millimeters of Mercury are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Kilopascals to Millimeters of Mercury?
Engineers, mechanics, and scientists frequently need to convert pressure between Kilopascals and Millimeters of Mercury 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 Kilopascals to Millimeters of Mercury?
A metric unit of pressure equal to exactly 1,000 pascals (1 kPa = 1,000 N/m²). To convert Kilopascals to Millimeters of Mercury, multiply by 7.50064. For example, 25 kPa equals 187.516 mmHg.
How many Millimeters of Mercury are in 1 Kilopascal?
There are 7.50064 Millimeters of Mercury in 1 Kilopascal.
How many Kilopascals are in 1 Millimeters of Mercury?
There are 0.133322 Kilopascals in 1 Millimeters of Mercury.
What is the formula for Kilopascal to Millimeters of Mercury conversion?
The formula is: multiply by 7.50064. This means 1 kPa = 7.50064 mmHg.
Is a Kilopascal bigger than a Millimeters of Mercury?
No. One Kilopascal is smaller than one Millimeters of Mercury because 1 kPa equals 7.50064 mmHg, which is greater than 1.
When do you need to convert between Kilopascals and Millimeters of Mercury?
A unit of pressure historically defined as the pressure exerted by a column of mercury exactly 1 millimeter tall at the standard acceleration of gravity (9. Kilopascal and Millimeters of Mercury 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.