Torr to pascals (Torr to Pa)

1 Torr = 133.322368421 Pa. To convert torr to pascals, multiply by 133.322368421.

The formula

Pa = Torr × 133.3223684

Where the factor comes from — each unit by its definition, then its size in SI:

  • 1 Torr = atm / 760 = 133.322368421 Pa
  • 1 Pa is the SI unit of pressure.

Dividing the two SI sizes gives the factor: 133.322368421 (rounded for display; the underlying ratio is fixed by the definitions). The reverse factor is 0.00750061682704.

Pressure is force per area; the pascal is one newton per square metre. Tyres are quoted in psi or bar, weather in hPa, blood pressure in mmHg and gas laws in pascals or atmospheres.

Worked examples

  • A car tyre (US gauge) (32 psi): 1,654.88 Torr = 220,632 Pa — 1,654.88 × 133.3223684 = 220,632
  • Sea-level air (1 atm): 760 Torr = 101,325 Pa — 760 × 133.3223684 = 101,325
  • A car tyre (European gauge) (2.2 bar): 1,650.14 Torr = 220,000 Pa — 1,650.14 × 133.3223684 = 220,000
  • A systolic blood-pressure reading (120 mmHg): 120 Torr = 15,998.7 Pa — 120 × 133.3223684 = 15,998.7

Frequently asked questions

How many pascals is 1 Torr?

1 Torr = 133.322368421 Pa.

How do I convert pascals back to torr?

Divide by 133.322368421 — or multiply by 0.00750061682704: 1 Pa = 0.00750061682704 Torr.

Torr to Pa conversion table

Torr (Torr)Pascals (Pa)
1133.32237
2266.64474
3399.96711
4533.28947
5666.61184
6799.93421
7933.25658
81,066.5789
91,199.9013
101,333.2237
151,999.8355
202,666.4474
253,333.0592
303,999.6711
405,332.8947
506,666.1184
607,999.3421
709,332.5658
759,999.1776
8010,665.789
9011,999.013
10013,332.237
15019,998.355
20026,664.474
25033,330.592
50066,661.184
1,000133,322.37

Definitions: NIST Special Publication 811 (2008), Guide for the Use of the International System of Units, Appendix B — https://www.nist.gov/pml/special-publication-811 · BIPM, The International System of Units (SI Brochure), 9th edition (2019), Tables 2, 4 and 8 — https://www.bipm.org/en/publications/si-brochure. Machine value of the factor: 133.322368421.