ATM Pressure Converter
Convert atmospheres (atm) to and from Pascals, kPa, bar, psi, mmHg, Torr, and inHg. Bidirectional conversion with preset values, reference table, and quick formulas.
kPa to mmHg Converter
Convert between kilopascals and millimeters of mercury (mmHg) for medical, scientific, and weather applications.
kPa
mmHg⧉
7.50 mmHg
Converted from kPa
Atmospheres (atm)⧉
0.01 atm
Converted from kPa
Pascals (Pa)⧉
1,000.00 Pa
Converted from kPa
PSI⧉
0.15 psi
Converted from kPa
Bar⧉
0.01 bar
Converted from kPa
Conversion Table
| kPa | mmHg | atm | Pa | psi | bar |
|---|---|---|---|---|---|
| 0.01 | 0.08 | 0.00 | 10.00 | 0.00 | 0.00 |
| 0.10 | 0.75 | 0.00 | 100.00 | 0.01 | 0.00 |
| 0.50 | 3.75 | 0.00 | 500.00 | 0.07 | 0.01 |
| 1.00 | 7.50 | 0.01 | 1,000.00 | 0.15 | 0.01 |
| 2.00 | 15.00 | 0.02 | 2,000.00 | 0.29 | 0.02 |
| 5.00 | 37.50 | 0.05 | 5,000.00 | 0.73 | 0.05 |
| 10.00 | 75.01 | 0.10 | 10,000.00 | 1.45 | 0.10 |
| 50.00 | 375.03 | 0.49 | 50,000.00 | 7.25 | 0.50 |
| 100.00 | 750.06 | 0.99 | 100,000.00 | 14.50 | 1.00 |
| 1,000.00 | 7,500.64 | 9.87 | 1,000,000.00 | 145.04 | 10.00 |
Quick Formulas
kPa → mmHg⧉
mmHg = kPa × 7.50062
Multiply by 7.50062
mmHg → kPa⧉
kPa = mmHg × 0.133322
Multiply by 0.133322
kPa → atm⧉
atm = kPa ÷ 101.325
Divide by 101.325
mmHg → atm⧉
atm = mmHg ÷ 760
Divide by 760
kPa → psi⧉
psi = kPa × 0.14504
Multiply by 0.14504
mmHg → psi⧉
psi = mmHg × 0.01934
Multiply by 0.01934
Planning notes, formulas, and examples
About the kPa to mmHg Converter
Kilopascals (kPa) and millimeters of mercury (mmHg) are both used to measure pressure, but in very different contexts. mmHg is the standard unit for blood pressure measurement worldwide and is also used in vacuum technology and some weather instruments. kPa is the SI-derived unit used in engineering and international weather reports.
The conversion factor is 1 kPa = 7.50062 mmHg, which means standard atmospheric pressure (101.325 kPa) equals 760 mmHg. This converter converts bidirectionally between these two units and also shows atm, Pa, psi, and bar equivalents. That makes it useful when a medical monitor, mercury-column gauge, or lab note needs to be compared with a metric pressure report without manually moving through several unit systems. It also gives you a fast check on whether a reading is near atmospheric pressure or clearly in the vacuum range.
Healthcare professionals, medical device technicians, and anyone interpreting blood pressure readings in different unit systems will find this converter essential. Normal blood pressure (120/80 mmHg) equals approximately 16.0/10.7 kPa, while 1 atm corresponds to 760 mmHg or 101.325 kPa. Use the result as a clean bridge between clinical, laboratory, and engineering reference points.
When This Page Helps
kPa and mmHg show up in different medical, laboratory, and weather contexts. This page makes the conversion direct and keeps the familiar blood-pressure and atmospheric reference points visible for quick interpretation. It is especially helpful when the same pressure must be understood in both clinical and engineering language, or when you need a quick check against a known reference point.
How to Use the Inputs
- Select the input unit from the dropdown menu.
- Enter your pressure value in the input field.
- View all converted values in the output cards below.
- Use the preset buttons for common values.
- Review the conversion table for a range of values.
- Expand the reference section to see real-world pressure examples.
- Check the quick formulas for the mathematical relationships.
Formula used
kPa to mmHg: mmHg = kPa × 7.50062
mmHg to kPa: kPa = mmHg × 0.133322
kPa to atm: atm = kPa ÷ 101.325
mmHg to atm: atm = mmHg ÷ 760Example Calculation
Result: 120.01 mmHg
16 kPa × 7.50062 = 120.01 mmHg. This corresponds to a normal systolic blood pressure reading.
Tips & Best Practices
- Normal blood pressure: 120/80 mmHg = 16.0/10.7 kPa.
- 1 atm = 760 mmHg = 101.325 kPa.
- mmHg and Torr are essentially identical: 1 mmHg ≈ 1 Torr.
- Vacuum levels are often specified in mmHg below atmospheric (e.g., 25 mmHg absolute).
- European blood pressure monitors may display kPa; US ones use mmHg exclusively.
- For quick kPa-to-mmHg: multiply by 7.5 (within 0.01% accuracy).
Blood Pressure Units Worldwide
Most countries use mmHg for blood pressure, but some European countries (particularly parts of Scandinavia and Germany) have used kPa on medical devices. The World Health Organization defines hypertension thresholds in mmHg: 140/90 mmHg = 18.7/12.0 kPa.
Mercury in Barometers
The mmHg unit dates back to Torricelli's mercury barometer (1643). A column of mercury 760 mm high balances standard atmospheric pressure. While mercury barometers are being phased out for environmental reasons, the unit persists in medicine and vacuum technology.
Vacuum Measurement
Vacuum levels are often expressed as mmHg absolute (distance below atmospheric) or as mmHg vacuum (amount of pressure removed). A reading of 25 mmHg absolute = 735 mmHg vacuum relative to 760 mmHg atmosphere.
Sources & Methodology
Last updated:
Frequently Asked Questions
Multiply the kPa value by 7.50062. For example, a reading of 16.0/10.7 kPa equals 120/80 mmHg, which is the familiar normal-blood-pressure benchmark used in clinics. Keep both units together when documenting results so future comparisons are easy.
Normal blood pressure (120/80 mmHg) is approximately 16.0/10.7 kPa. Hypertension begins at 140/90 mmHg, which is about 18.7/12.0 kPa, so the converter is handy for translating clinical thresholds.
Very nearly. 1 mmHg = 1.000000142 Torr, so the difference is far smaller than the precision of most practical measurements. In day-to-day work, the two units are usually interchangeable.
Blood pressure measurement originated with mercury sphygmomanometers, which literally measured the height of a mercury column in millimeters. The unit persists even with digital monitors because medical guidelines, device labels, and clinician habit all still use it.
1 mmHg = 0.133322 kPa. That means 760 mmHg, the standard atmosphere reference, equals 101.325 kPa.
High vacuum is below 0.001 mmHg, or about 0.000133 kPa. Medium vacuum ranges from 1-25 mmHg, while low vacuum spans roughly 25-760 mmHg depending on the context.
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