Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Vacuum - Pressure Units Converter

Converting between vacuum units like % vacuum - mm Mercury - psi - torr - micron - kPa.

Sponsored Links

The table below can be used to convert between commonly used vacuum units:

%
Vacuum
Torr
(mm Mercury)
Micronpsia,
(lb/in2
abs)
Inches
Mercury
Absolute
Inches
Mercury
Gauge
kPa
abs
0.0 760.0 760,000 14.7 29.92 0.00 101.4
1.3 750.0 750,000 14.5 29.5 0.42 99.9
1.9 735.6 735,600 14.2 28.9 1.02 97.7
7.9 700.0 700,000 13.5 27.6 2.32 93.5
21.0 600.0 600,000 11.6 23.6 6.32 79.9
34.0 500.0 500,000 9.7 19.7 10.22 66.7
47.0 400.0 400,000 7.7 15.7 14.22 53.2
50.0 380.0 380,000 7.3 15.0 14.92 50.8
61.0 300.0 300,000 5.8 11.8 18.12 40
74.0 200.0 200,000 3.9 7.85 22.07 26.6
87.0 100.0 100,000 1.93 3.94 25.98 13.3
88.0 90.0 90,000 1.74 3.54 26.38 12
89.5 80.0 80,000 1.55 3.15 26.77 10.7
90.8 70.0 70,000 1.35 2.76 27.16 9.3
92.1 60.0 60,000 1.16 2.36 27.56 8
93.0 51.7 51,700 1.00 2.03 27.89 6.9
93.5 50.0 50,000 0.97 1.97 27.95 6.7
94.8 40.0 40,000 0.77 1.57 28.35 5.3
96.1 30.0 30,000 0.58 1.18 28.74 4
96.6 25.4 25,400 0.49 1.00 28.92 3.4
97.4 20.0 20,000 0.39 0.785 29.14 2.7
98.7 10.0 10,000 0.193 0.394 29.53 1.3
99.0 7.6 7,600 0.147 0.299 29.62 1.0
99.87 1.0 1,000 0.01934 0.03937 29.88 0.13
99.90 0.75 750 0.0145 0.0295 29.89 0.1
99.99 0.10 100 0.00193 0.00394 29.916 0.013
99.999 0.01 10 0.000193 0.000394 29.9196 0.0013
100 0.00 0 0 0 29.92 0
  • 1 psi (lb/in2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar

Vacuum Units Converter Chart

Download and print Vacuum Units Converter Chart

Convert from % Vacuum to Unit of Pressure

The % of vacuum is a relative value where pressure at normal or standard atmosphere is the base value.

pv% = 100% - (pv / patm) 100%                                       (1)

where

pv% = vacuum (%)

pv = absolute pressure (psia, kPa, bar ..)

patm = absolute presure at normal or standard conditions (psia, kPa, bar ..)

Example - Pressure in kPa and % Vacuum

The vacuum with absolute pressure 4 kPa and standard pressure 101.4 kPa can be calculated as

pv% = 100% - ((4 kPa) / (101.4 kPa)) 100% 

       = 96.1 %

Example - Pressure in kPa and % Vacuum

The vacuum with absolute pressure 0.1 bar and standard pressure 1 bar can be calculated as

pv% = 100% - ((0.1 bar) / (1 bar)) 100% 

       = 90 %

Vacuum Ranges

Pressure
(Pa)
Low vacuum 1x105 to 3x103
Medium vacuum 3x103 to 1x10-1
High vacuum 1x10-1 to 1x10-7
Ultra high vacuum 1x10-7 to 1x10-10
Extremely high vacuum 1x10-10
Perfect vacuum 0
  • Outer space 1x10-4 to < 3x10-15
Sponsored Links

Related Topics

Related Documents

Sponsored Links

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate
About the Engineering ToolBox!

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Citation

This page can be cited as

  • Engineering ToolBox, (2003). Vacuum - Pressure Units Converter. [online] Available at: https://www.engineeringtoolbox.com/vacuum-converter-d_460.html [Accessed Day Mo. Year].

Modify access date.

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

3 30

Sponsored Links
.