Convert Torr (Torr) to MPa
1 torr equals 0.000133322 MPa.
Torr to MPa Converter
How to Convert Torr to MPa
1 torr = 0.000133322 MPa
MPa = Torr × 0.000133322
Example: 1 Torr × 0.000133322 = 0.000133322 MPa
Reverse Conversion
To convert MPa back to torr:
- Remember, 1 MPa equals 7500.62 torr.
- To convert 0.000133322 MPa to Torr, multiply
0.000133322 x 7500.62, resulting in1 Torr.
Torr to MPa Conversion Table
Reference table with common torr to mpa conversions. All values calculated with high precision.
Torr to MPa Table
1 to 5000
Torr to MPa Table
10000 to 1 × 109
MPa to Torr Table
0.0001 to 12
MPa to Torr Table
1 to 100000
Definition of Torr
Torr: The Vacuum Technologist's Unit
The torr is a unit of pressure named after the Italian physicist Evangelista Torricelli, inventor of the barometer. One torr is defined as exactly 1/760 of a standard atmosphere (101,325/760 Pa ≈ 133.322 Pa). The torr is widely used in vacuum technology, physics laboratories, and high-vacuum applications where precise low-pressure measurements are needed.
Conversions to Other Units of Measurement:
- Atmosphere (atm): 1 torr equals exactly 1/760 atm. By definition, 760 torr equals exactly 1 standard atmosphere.
- Pascal (Pa): 1 torr equals approximately 133.322 pascals. This converts vacuum readings to SI units.
- Millibar (mbar): 1 torr equals approximately 1.33322 mbar. This conversion is useful for relating vacuum levels to atmospheric measurements.
- Millimeter of Mercury (mmHg): 1 torr is very close to 1 mmHg (they differ by about 0.000015%). For practical purposes, they are often used interchangeably.
- Micron (μm Hg or mTorr): 1 torr equals 1,000 millitorr (mTorr) or microns. This is commonly used for high-vacuum measurements.
The torr provides a convenient scale for vacuum measurements, where typical applications range from rough vacuum (760-1 torr) to high vacuum (10⁻³-10⁻⁹ torr).
- Definition
- Pressure unit equal to exactly 1/760 of a standard atmosphere.
- Exact factor
- 1 Torr = 101,325/760 Pa = 133.32236842... Pa
- Common equivalents
- 760 Torr = 1 atm (exact by definition)
- 1 Torr ≈ 1 mmHg
- 1 Torr ≈ 1.33322 mbar
- Sources
Definition of MPa
Megapascal: High-Pressure Applications
The megapascal (MPa) is an SI-derived unit of pressure equal to 1,000,000 pascals (1,000 kPa or 10 bar). It is commonly used in engineering and materials science for measuring high pressures, such as the tensile strength of materials, hydraulic system pressures, and geological pressures. The megapascal provides convenient numbers when dealing with pressures that would be unwieldy in pascals or kilopascals.
Conversions to Other Units of Measurement:
- Bar: 1 megapascal equals exactly 10 bar. This simple relationship makes MPa convenient for high-pressure industrial work. For example, 20 MPa equals 200 bar.
- PSI: 1 megapascal equals approximately 145.038 psi. This conversion is essential for engineering specifications. For example, a steel with 250 MPa yield strength equals approximately 36,260 psi.
- Kilopascal (kPa): 1 megapascal equals exactly 1,000 kPa. For example, 5 MPa equals 5,000 kPa.
- Pascal (Pa): 1 megapascal equals exactly 1,000,000 pascals. This is the fundamental SI relationship.
- Atmosphere (atm): 1 megapascal equals approximately 9.86923 atm. This shows that MPa represents significantly higher pressures than atmospheric.
The megapascal is essential in structural engineering, material science, and any application involving high pressures.
- Definition
- SI-derived pressure unit equal to 1,000,000 pascals (10⁶ Pa).
- Exact factor
- 1 MPa = 1,000,000 Pa (exact); 1 MPa = 10 bar (exact)
- Common equivalents
- 1 MPa = 1,000 kPa (exact)
- 1 MPa ≈ 145.038 psi
- 1 MPa ≈ 9.86923 atm
- Sources
About the Torr
Facts & Uses
- 1 torr = 1/760 of a standard atmosphere exactly = 101325/760 Pa ≈ 133.322 Pa. Numerically equal to 1 mmHg under standard conditions.
- Named after Evangelista Torricelli (1608-1647), the inventor of the mercury barometer in 1643.
- Standard in vacuum technology: ultra-high vacuum systems measured in milli-torr or micro-torr; semiconductor manufacturing uses torr for chamber pressures.
- Still common in medical contexts for blood pressure (interchangeable with mmHg) and partial pressures of gases in respiratory physiology.
Curiosities
- The torr is essentially equivalent to mmHg at standard conditions, but the torr is defined exactly while mmHg depends on mercury density and gravity.
- Torricelli's 1643 experiment was the first scientific demonstration of atmospheric pressure — a glass tube filled with mercury inverted into a basin showed the column standing at ~760 mm.
- A perfect vacuum would be 0 torr; the lowest practical vacuum in commercial systems is about 10⁻¹¹ torr — used in surface science and accelerators.
- Approximate equivalents: 760 torr = 1 atm; 1 torr ≈ 133 Pa ≈ 0.0193 psi.
Sources
About the MPa
Facts & Uses
- 1 MPa = 1,000,000 Pa = 1 N/mm² exactly — the convenient unit for high pressures and material stresses.
- Standard in materials science for tensile strength: structural steel ≈ 250 MPa yield, high-strength steel 400-700 MPa, carbon fiber 3500+ MPa.
- Used in hydraulic systems (typical hydraulic pressures 10-35 MPa), injection molding, and industrial pressure vessels.
- High-pressure applications: diamond anvil cells reach 100-300 GPa; deep ocean trenches around 100 MPa at the Mariana Trench.
Curiosities
- Concrete compressive strength is typically expressed in MPa: 25 MPa for residential, 40+ MPa for high-rise buildings, 100+ MPa for ultra-high-performance concrete.
- The Earth's pressure at the core-mantle boundary reaches about 136 GPa = 136,000 MPa — beyond what can be sustained at the surface in any container.
- 1 MPa is approximately the pressure under a 1 cm column of mercury per square millimeter, or about 145 psi.
- Approximate equivalents: 1 MPa = 145 psi = 9.87 atm = 10 bar.
Sources
Frequently Asked Questions
How many MPa are in one torr?
One torr equals 0.000133322 MPa. To convert, multiply the torr value by 0.000133322. For the reverse, divide the MPa value by 0.000133322 (or multiply by 7500.62).
What is 16.5 torr in MPa?
16.5 torr = 0.0021998 MPa. This is one of the most commonly searched conversions for this pair.
How precise is the torr-to-MPa conversion?
The factor 0.000133322 is accurate to 6 significant figures, derived from international measurement standards. Our calculator uses full precision internally.
Looking for the reverse? Convert MPa to Torr
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