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Convert Torr to Megapascals

1 torr is 0.000133 MPa. One torr is exactly 0.000133322368421 megapascals.

One torr is 1.3332 × 10^-4 megapascals. To convert torr to megapascals, multiply by 1.3332 × 10^-4; to go the other way, divide by 1.3332 × 10^-4 or multiply by 7500.6168. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly one seven-hundred-and-sixtieth of a standard atmosphere.

Factor checked against the defining standard · How we check

Megapascals
0.000133 MPa
Torr × 1.3332 × 10^-4
value * 0.0001333223684210 MPa

1 torr in every pressure unit

UnitValueExact factor
pounds per square inch0.0193367747 psi× 0.0193367747046
bars0.001333223684 bar× 0.00133322368421
pascals133.3223684 Pa× 133.322368421
kilopascals0.1333223684 kPa× 0.133322368421
megapascals0.0001333223684 MPa× 0.000133322368421
atmospheres0.001315789474 atm× 0.00131578947368
torr (as entered)1 Torr
inches of mercury0.03937006895 inHg× 0.0393700689499

Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.

How do you convert torr to megapascals?

  1. 1.Take the measurement in torr.
  2. 2.Multiply by 1.3332 × 10^-4 — that is how many megapascals fit in one torr.
  3. 3.To go back the other way, divide by 1.3332 × 10^-4, or multiply by 7500.6168.

Worked example: 25 torr to megapascals

Formula
Torr × 1.3332 × 10^-4 = MPa
Arithmetic
25 × 1.3332 × 10^-4 = 0.003333 MPa
Answer
25 Torr = 0.003333 MPa

The factor is rounded for display; the figure above is computed from the full value.

Torr to megapascals conversion table

TorrMegapascals
1 Torr0.000133 MPa
2 Torr0.000267 MPa
3 Torr0.0004 MPa
4 Torr0.000533 MPa
5 Torr0.000667 MPa
6 Torr0.0008 MPa
7 Torr0.000933 MPa
8 Torr0.001067 MPa
9 Torr0.0012 MPa
10 Torr0.001333 MPa
12 Torr0.0016 MPa
15 Torr0.002 MPa
20 Torr0.002666 MPa
25 Torr0.003333 MPa
50 Torr0.006666 MPa
100 Torr0.013332 MPa
200 Torr0.026664 MPa
300 Torr0.039997 MPa
500 Torr0.066661 MPa
1000 Torr0.133322 MPa
2000 Torr0.266645 MPa
5000 Torr0.666612 MPa
10000 Torr1.333224 MPa

What is a torr?

Exactly one seven-hundred-and-sixtieth of a standard atmosphere. Within a millionth of a millimetre of mercury, which is what it replaced, and still the unit of vacuum work.

What is a megapascal?

A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.

How many megapascals are in a torr?

One torr is 1.3332 × 10^-4 megapascals. Going the other way, one megapascal is 7500.6168 torr. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.

Every pressure unit here

UnitSymbolOne of these is
Pounds per square inchpsi6894.7573 pascal
Barsbar100000 pascal
PascalsPathe base unit
KilopascalskPa1000 pascal
MegapascalsMPa1000000 pascal
Atmospheresatm101325 pascal
TorrTorr133.32237 pascal
Inches of mercuryinHg3386.389 pascal

Source: NIST Special Publication 811 — pound-force is exactly 4.4482216152605 N and the inch exactly 0.0254 m

Questions people actually ask

How many megapascals are in a torr?
1.3332 × 10^-4. A million pascals. Concrete strength and hydraulic ratings are specified here: 30 MPa concrete is about 4,350 psi.
How do I convert megapascals back to torr?
Divide by 1.3332 × 10^-4, or multiply by 7500.6168 — they are the same operation.

Other pressure conversions

Megapascals to torr — the same conversion the other way.