mmHg to Pascal Converter Online — Convert Millimetres of Mercury to Pa
Free online tool to convert millimetres of mercury to pascals in a second. Built for BP charts, MBBS physiology records, hospital equipment testing, and IMD weather data. Reliable mmHg to Pa results every time.
Online Pressure Converter - Bar to PSI, kPa & MoreThe quick answer for 1 mmHg — type any value below for the exact result
mmHg
Pascal
mmHg to Pascal Conversion Formula
To convert millimetres of mercury to pascals, multiply the mmHg value by 133.322. One conventional mmHg is the pressure exerted by a 1-millimetre column of mercury, and 760 mmHg make one standard atmosphere (101,324.7 Pa).
mmHg and Pascal Explained
mmHg (mmhg)
The millimetre of mercury (mmHg) is a pressure unit representing the push of a one-millimetre column of mercury — effectively 133.322 pascals in the conventional definition. Medicine built its entire vocabulary around it: blood pressure is recorded as 120/80 mmHg on every BP instrument from district hospitals to neighbourhood clinics, cerebrospinal and venous pressures are charted in single digits, and cerebrovascular thresholds are quoted in tens. Barometry historically read the weather in hundreds, with 760 mmHg marking standard sea-level air. Despite mercury devices fading from wards, the unit survives on every digital monitor display in India.
Where it is used: mmHg dominates clinical practice across India for blood pressure and body-cavity pressures, and it lingers in vacuum work at research laboratories and in historic meteorological records.
Origin: Evangelista Torricelli demonstrated the mercury barometer in 1643, and reading its column height in millimetres became the standard way to express pressure for three centuries.
Pascal (pa)
The pascal (Pa) is the SI unit of pressure — one newton of force over one square metre — and the formal replacement for mercury-column measurements. Physiological pressures translate to thousands of pascals: diastolic 80 mmHg is 10,665.8 Pa and a full atmosphere is 101,325 Pa. Regulatory submissions and device datasheets, including those for CDSCO approvals, typically prefer its kilopascal multiple, making blood pressure 16.0 kPa at the classic 120 mmHg mark. The pascal ties pressure readings directly to newtons, metres, and seconds in any computation.
Where it is used: Pascals are required in SI documentation for medical device certification under BIS and CDSCO norms, laboratory instrumentation, and scientific publishing.
Origin: Adopted into the SI in 1971 and named for Blaise Pascal, the unit formalised pressure in mechanical terms as mercury-column instrumentation retired.
mmHg to Pascal Conversion Table
| mmHg (mmhg) | Pascal (pa) |
|---|---|
| 1 mmhg | 133.322 pa |
| 5 mmhg | 666.61 pa |
| 10 mmhg | 1333.22 pa |
| 20 mmhg | 2666.44 pa |
| 40 mmhg | 5332.88 pa |
| 60 mmhg | 7999.32 pa |
| 80 mmhg | 10665.76 pa |
| 100 mmhg | 13332.2 pa |
| 120 mmhg | 15998.64 pa |
| 140 mmhg | 18665.08 pa |
| 160 mmhg | 21331.52 pa |
| 200 mmhg | 26664.4 pa |
| 300 mmhg | 39996.6 pa |
| 400 mmhg | 53328.8 pa |
| 500 mmhg | 66661 pa |
| 760 mmhg | 101324.72 pa |
| 800 mmhg | 106657.6 pa |
| 1000 mmhg | 133322 pa |
Pascal to mmHg Conversion Table
| Pascal (pa) | mmHg (mmhg) |
|---|---|
| 100 pa | 0.7500637554 mmhg |
| 500 pa | 3.7503187771 mmhg |
| 1000 pa | 7.5006375542 mmhg |
| 2000 pa | 15.0012751084 mmhg |
| 5000 pa | 37.503187771 mmhg |
| 8000 pa | 60.0051004335 mmhg |
| 10000 pa | 75.0063755419 mmhg |
| 12000 pa | 90.0076506503 mmhg |
| 16000 pa | 120.0102008671 mmhg |
| 20000 pa | 150.0127510838 mmhg |
| 50000 pa | 375.0318777096 mmhg |
| 100000 pa | 750.0637554192 mmhg |
| 101325 pa | 760.0021001785 mmhg |
mmHg to Pascal in Everyday Objects
Common real-world examples that make mmHg and Pascal easy to picture at a glance.
| mmHg (mmhg) | Pascal (pa) | |
|---|---|---|
| A systolic BP reading | 120 mmhg | 15998.64 pa |
| A diastolic BP reading | 80 mmhg | 10665.76 pa |
| A hypertension reading | 140 mmhg | 18665.08 pa |
| A mean arterial reading | 90 mmhg | 11998.98 pa |
| A sea-level barometer in Mumbai | 760 mmhg | 101324.72 pa |
| A barometer in high-altitude Leh | 253 mmhg | 33730.466 pa |
When You Need mmHg to Pascal Conversions
Blood-Pressure Monitor Engineering
Firmware shows the patient 120 mmHg while the sensor pipeline computes in SI — enter 120 and confirm the 15,998.6 Pa value used internally by monitors designed in India's medical-electronics hubs.
Hospital Equipment QA
Biomedical teams at multi-speciality hospitals do the needful: they verify pressure transducers against a 100 mmHg reference, confirming the output reads 13,332.2 Pa on the SI-calibrated analyser.
Weather Station Archives
An old weather-station log from Kolkata notes 748 mmHg on a stormy monsoon afternoon; converting yields 99,724.9 Pa (99.7 kPa) for the digital archive.
Physiology Practical Records
MBBS students record a 7 mmHg central venous pressure from the demo manometer and convert it to 933.3 Pa for the practical record submitted to the department.
Related Pressure Conversions
How to Use
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1
Enter mmHg Value
Type the mercury-column reading — common entries include BP readings (80-180 mmHg), barometer readings (around 750 mmHg in coastal Chennai, lower in high-altitude Leh), and physiology practicals (5-50 mmHg)
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2
View Pascal Result
The pascal equivalent appears instantly. For example, 120 mmHg converts to 15,998.6 Pa, roughly 16 kPa
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3
Copy or Swap
Copy the result for your records, or click Swap to convert pascals back to mmHg
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4
Report in SI Prefixes
Medical and SI documents usually quote kilopascals: divide your pascal result by 1,000, so a classic 120/80 BP works out to 16.0 kPa and 10.7 kPa
Why Use Be Converter?
Instant Conversion
Get accurate mmHg to Pa results in real time as you type — handy for OPD notes, ICU charts, and college practical records
Exact Mercury-Column Factor
Uses the conventional factor of exactly 133.322 Pa per mmHg, so 760 mmHg = 101,324.7 Pa — within 0.3 Pa of the 101,325 Pa standard atmosphere
Conversion Table
Quick reference with values seen in Indian clinics, such as 80 mmHg (10,665.8 Pa), 120 mmHg (15,998.6 Pa), and 760 mmHg (101,324.7 Pa)
Bidirectional
Swap between mmHg and pascals in one click whenever you need the reverse conversion
Free & No Signup
No registration, unlimited conversions, and it costs ₹0 — completely free forever
Privacy First
All calculations happen in your browser, so patient data never leaves your device. Nothing is sent to any server
Frequently Asked Questions
How many pascals is 1 mmHg?
What is 120/80 blood pressure in pascals?
Is mmHg the same as torr?
How do I convert barometer readings from mmHg to Pa?
Why does medicine still use mmHg?
What is 80 mmHg in pascals?
How many Pa is 50 mmHg?
How do I convert mmHg to kPa for medical devices?
About the mmHg to Pascal Converter
Our free online mmHg to pascal converter bridges clinical practice and SI measurement for users across India. Whether you are an MBBS student in Chennai writing up physiology records, a biomedical engineer in Bengaluru testing a patient monitor, a technician digitising old mercury-barometer logs from a weather station, or a nurse documenting BP at a primary health centre, this tool returns the exact pascal value. Millimetres of mercury remain the working unit of sphygmomanometers in Indian hospitals, while the pascal — one newton per square metre — anchors scientific documentation and filings with bodies such as the CDSCO. Our converter applies the conventional factor of exactly 133.322 pascals per mmHg with no intermediate rounding.
Expert Tips for Accurate mmHg to Pascal Conversion
Memorise the clinical anchors: 80 mmHg = 10.7 kPa, 120 mmHg = 16.0 kPa, 180 mmHg = 24.0 kPa — the diastolic, systolic, and severe-hypertension marks taught in every medical college
The full column: 760 mmHg = 101,324.7 Pa — just over one lakh pascals and within 0.3 Pa of the 101,325 Pa standard atmosphere, a handy cross-check that your factor is correct
For kilopascal output simply divide the pascal result by 1,000, or multiply mmHg directly by 0.133322 — 140 mmHg becomes 18.7 kPa
High-altitude physiology close to home: air pressure in Leh (about 3,500 m) is near 490 mmHg = 65,328 Pa (65.3 kPa), barely two-thirds of sea level, while Everest's summit sits near 253 mmHg = 33,730 Pa (33.7 kPa)
When auditing device logs remember the near-equivalence with torr (133.322 Pa) — vacuum instruments in semiconductor and research laboratories labelled in torr can be read as mmHg for every practical purpose