Vacuum Pressure Conversion: 1 Torr = 0.133322 kPa | Essential for scientific and industrial vacuum measurements

Torr to kPa (Vacuum) Converter

Accurate conversion between Torr and kilopascals (kPa) for vacuum pressure measurements. Essential for scientific, industrial, and laboratory applications.

1 Torr = 0.133322 kPa | Default: 2 decimal places

Conversion Factor

1 Torr = 0.133322 kPa (kilopascals) | 1 kPa = 7.50062 Torr

Torr
kPa

Precision: 2 Decimal Places | Formula: kPa = Torr × 0.133322

Common Vacuum Pressure Measurements

Torr and Kilopascals (kPa)

Understanding these essential pressure units for vacuum measurements in science and industry.

The Conversion Formula

Torr to kPa (Vacuum) Conversion

1 Torr = 0.1333223684 kPa
1 kPa = 7.500616827 Torr
kPa = Torr × 0.133322
Torr = kPa × 7.50062

Example Calculation 1:

Convert 760 Torr (1 atmosphere) to kPa:

kPa = Torr × 0.133322

kPa = 760 × 0.133322

kPa = 101.3247 (with 4 decimal places)

Example Calculation 2:

Convert 100 kPa to Torr:

Torr = kPa × 7.50062

Torr = 100 × 7.50062

Torr = 750.062 (with 3 decimal places)

Note: These conversions are standard for vacuum pressure measurements in scientific and industrial applications

When to Use This Conversion:

  • Vacuum technology and manufacturing processes
  • Laboratory pressure measurements
  • Industrial vacuum systems and equipment
  • Scientific research and experiments
  • HVAC and refrigeration systems
  • Medical equipment (e.g., vacuum pumps, anesthesia machines)
  • Semiconductor manufacturing

About the Units

Torr

A unit of pressure based on the millimeter of mercury (mmHg), defined as 1/760 of a standard atmosphere. It's commonly used for measuring low pressures and vacuums.

Equivalents:

  • 1 Torr = 1 mmHg (millimeter of mercury)
  • 1 Torr = 0.133322 kPa
  • 1 Torr = 133.322 pascals
  • 760 Torr = 1 standard atmosphere (atm)
  • 1 Torr ≈ 0.019337 psi

Note: Named after Evangelista Torricelli, inventor of the barometer

Kilopascal (kPa)

A metric unit of pressure equal to 1000 pascals. It's the standard unit for pressure measurements in the International System of Units (SI).

Equivalents:

  • 1 kPa = 1000 pascals (Pa)
  • 1 kPa = 7.50062 Torr
  • 1 kPa = 0.00986923 atmospheres
  • 1 kPa ≈ 0.145038 psi (pounds per square inch)
  • 101.325 kPa = 1 standard atmosphere

Note: The pascal is named after Blaise Pascal, French mathematician and physicist

Common Vacuum Pressure Equivalents:

Torr kPa mmHg atm psi
760 101.325 760 1 14.6959
1 0.1333 1 0.0013 0.0193
100 13.3322 100 0.1316 1.9337
0.1 0.0133 0.1 0.0001 0.0019
0.001 0.0001 0.001 0.0000013 0.000019
0 0 0 0 0

Frequently Asked Questions

Common questions about Torr, kPa, and vacuum pressure measurements.

The exact conversion factor between Torr and kilopascals is:

1 Torr = 0.1333223684 kPa

1 kPa = 7.500616827 Torr

For practical purposes, these values are often rounded to 0.133322 kPa per Torr and 7.50062 Torr per kPa. This converter uses these rounded values for standard calculations while maintaining high precision.

Torr and millimeters of mercury (mmHg) are nearly identical units of pressure:

  • Historical definition: 1 mmHg was defined as the pressure exerted by a column of mercury 1 millimeter high at 0°C
  • Torr definition: 1 Torr is defined as exactly 1/760 of a standard atmosphere
  • Practical difference: The difference between Torr and mmHg is less than 0.000015%, making them interchangeable for most applications
  • Usage: Torr is preferred in vacuum technology, while mmHg is commonly used in medicine and meteorology

For all practical purposes in vacuum measurements, 1 Torr = 1 mmHg can be used without significant error.

Vacuum levels are typically categorized by pressure ranges:

Vacuum Classification
  • Low vacuum: 760 to 1 Torr (101.3 to 0.133 kPa)
  • Medium vacuum: 1 to 10⁻³ Torr (0.133 to 0.000133 kPa)
  • High vacuum: 10⁻³ to 10⁻⁹ Torr (1.33×10⁻⁴ to 1.33×10⁻¹⁰ kPa)
  • Ultra-high vacuum: < 10⁻⁹ Torr (< 1.33×10⁻¹⁰ kPa)
Common Applications
  • 1-100 Torr: Vacuum packaging, freeze drying
  • 0.001-1 Torr: Thin film deposition, vacuum metallurgy
  • 10⁻⁶-10⁻³ Torr: Electron microscopy, space simulation
  • < 10⁻⁶ Torr: Particle accelerators, surface science

Precision in vacuum pressure measurements is critical for many scientific and industrial applications:

  • Scientific research: Accurate pressure measurements are essential for reproducible experimental results
  • Manufacturing processes: Semiconductor fabrication requires precise vacuum control (often to 10⁻⁹ Torr)
  • Calibration: Pressure sensors and instruments need accurate conversion factors for calibration
  • Safety: Some industrial processes have critical pressure thresholds that must be precisely measured
  • International standards: Consistent unit conversions ensure global compatibility of scientific data

This converter provides up to 4 decimal places of precision, which is sufficient for most industrial and scientific applications. For ultra-high precision work, the exact conversion factor (1 Torr = 0.1333223684 kPa) should be used.

Torr and kPa are used in various fields for pressure measurement:

Torr Applications
  • Vacuum technology and systems
  • Laboratory pressure measurements
  • Medical equipment (anesthesia, suction)
  • HVAC and refrigeration
  • Atmospheric science
  • Education and teaching
kPa Applications
  • Industrial pressure measurements
  • Weather forecasting and meteorology
  • Automotive engineering
  • Aerospace and aviation
  • Building ventilation systems
  • International scientific standards

While kPa is the SI unit and more widely used globally, Torr remains the preferred unit in vacuum technology due to its practical scale for low-pressure measurements.

Conversion Table: Torr to kPa

Common vacuum pressure measurements for scientific and industrial applications.

Torr kPa mmHg atm Common Uses
760 101.325 760 1 Standard atmospheric pressure
100 13.3322 100 0.1316 Low vacuum applications
10 1.3332 10 0.0132 Medium vacuum range
1 0.1333 1 0.0013 Laboratory vacuum
0.1 0.0133 0.1 0.0001 High vacuum applications
0.01 0.0013 0.01 0.000013 Ultra-high vacuum
0.001 0.000133 0.001 0.0000013 Research-grade vacuum
0 0 0 0 Perfect vacuum (theoretical)

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