Convert Pascals to Millimeters of Mercury (Pa to mmHg)
1 pascal (Pa) equals 0.007500615758 millimeters of mercury (mmHg).
1 Pa = 0.007500615758 mmHg
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk pascal to millimeter of mercury converter to paste a column from Excel.
How to Convert Pascal to Millimeter of Mercury
- 1 Pa = 0.007500615758 mmHg
- 1 mmHg = 133.3223874 Pa
- Example: convert 15 Pa to mmHg: 15 Pa = 15 × 0.007500615758 mmHg = 0.1125092364 mmHg
Reference conditions. mmHg: Conventional mercury column: ρ = 13 595.1 kg/m³ and gₙ = 9.80665 m/s² (≈ mercury at 0 °C / 32 °F).
Formula
mmHg = Pa × 0.007500615758457
or mmHg = Pa ÷ 133.322387415
Derivation from SI units:
- 1 Pa = 1 N/m² = 1 kg·m⁻¹·s⁻²
- 1 mmHg = 13 595.1 kg/m³ × 9.80665 m/s² × 0.001 m = 133.322387415 Pa
Both units are defined exactly, so the factor is exact. Pascal definition: pascal; Millimeter of Mercury definition: millimeter of mercury.
Worked examples
- An arterial pressure of 16000 Pa above atmospheric reads 120.0098521 mmHg.
16000 Pa × 0.007500615758 = 120.0098521 mmHg - The standard atmosphere, 101325 Pa, equals 759.9998917 mmHg.
101325 Pa × 0.007500615758 = 759.9998917 mmHg
Pascal to Millimeter of Mercury conversion table
| Pascals (Pa) | Millimeters of Mercury (mmHg) |
|---|---|
| 1 Pa | 0.007500615758 mmHg |
| 5 Pa | 0.03750307879 mmHg |
| 10 Pa | 0.07500615758 mmHg |
| 15 Pa | 0.1125092364 mmHg |
| 25 Pa | 0.187515394 mmHg |
| 50 Pa | 0.3750307879 mmHg |
| 75 Pa | 0.5625461819 mmHg |
| 100 Pa | 0.7500615758 mmHg |
| 125 Pa | 0.9375769698 mmHg |
| 150 Pa | 1.125092364 mmHg |
| 200 Pa | 1.500123152 mmHg |
| 250 Pa | 1.87515394 mmHg |
| 300 Pa | 2.250184728 mmHg |
| 400 Pa | 3.000246303 mmHg |
| 500 Pa | 3.750307879 mmHg |
| 750 Pa | 5.625461819 mmHg |
| 1000 Pa | 7.500615758 mmHg |
| 1500 Pa | 11.25092364 mmHg |
| 2000 Pa | 15.00123152 mmHg |
| 2500 Pa | 18.7515394 mmHg |
| 5000 Pa | 37.50307879 mmHg |
| 10000 Pa | 75.00615758 mmHg |
| 50000 Pa | 375.0307879 mmHg |
| 101325 Pa | 759.9998917 mmHg |
Where it's used
Medical devices and research papers that measure in pascals or kilopascals need conversion to mmHg, the clinical unit for blood pressure. One mmHg is about 133.3 Pa.
Pascal to other pressure units
| Conversion | 1 Pa equals |
|---|---|
| pascal to kilopascal | 0.001 kPa |
| pascal to megapascal | 0.000001 MPa |
| pascal to psi | 0.0001450377377 psi |
| pascal to bar | 0.00001 bar |
| pascal to millibar | 0.01 mbar |
| pascal to decibar | 0.0001 dbar |
| pascal to torr | 0.007500616827 Torr |
| pascal to millimeter of mercury | 0.007500615758 mmHg |
| pascal to millimeter of water | 0.1019716213 mmH₂O |
| pascal to centimeter of water | 0.01019716213 cmH₂O |
| pascal to inch of water | 0.00401463076 inH₂O |
| pascal to inch of water (60 °F) | 0.00401864652 inH₂O (60 °F) |
| pascal to inch of mercury | 0.000295299833 inHg |
| pascal to atmosphere | 0.000009869232667 atm |
| pascal to barye | 10 Ba |
Frequently asked questions
How do I convert kPa blood pressure to mmHg?
Multiply kPa by about 7.5: 16 kPa = 120 mmHg.
How many millimeters of mercury are in 1 pascal?
1 Pa = 0.007500615758 mmHg.
How do I convert pascals to millimeters of mercury?
Multiply the value in Pa by 0.007500615758, or divide it by 133.3223874. For example, 15 Pa × 0.007500615758 = 0.1125092364 mmHg.
Is the Pa to mmHg conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "millimeter of mercury, conventional (mmHg)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Pascals to Millimeters of Mercury (Pa to mmHg). Retrieved October 18, 2026, from https://scientificconverters.com/pressure/pascal-to-millimeter-of-mercury/
IEEE
Scientific Converters, "Convert Pascals to Millimeters of Mercury (Pa to mmHg)," scientificconverters.com. Accessed: Oct. 18, 2026. [Online]. Available: https://scientificconverters.com/pressure/pascal-to-millimeter-of-mercury/