Inchs of air [0 °C] to Ounces per square inch Conversion Calculator

1 inch of air [0 °C] = 0.0007 ounces per square inch

From to

Input

Results

Input	Output	Table Chart
1 ft-head	0.4335 psi	feet of head to pounds per square inch table
1 bar	10.197162129779 t/m²	bars to tonnes per square meter table
1 Mpa	101.97162129779 t/m²	megapascals to tonnes per square meter table
1 kPa	0.102 t/m²	kilopascals to tonnes per square meter table
1 ft-head	0.0299 bar	feet of head to bars table
1 kip/ft²	1000 psft	kips per square foot to pounds per square foot table
1 kip/in²	1000 psi	kips per square inch to pounds per square inch table
1 oz/in²	0.0625 psi	ounces per square inch to pounds per square inch table
1 t/m²	0.0098 N/mm²	tonnes per square meter to newtons per square millimeter table
1 kip/in²	144 kip/ft²	kips per square inch to kips per square foot table

Sample Pressure Conversion

10 foot of head to pounds per square inch, the result is 4.335275019282 pounds per square inch
10 bar to tonnes per square meter, the result is 101.97162129779 tonnes per square meter
10 megapascal to tonnes per square meter, the result is 1019.7162129779 tonnes per square meter
10 kilopascal to tonnes per square meter, the result is 1.019716212978 tonnes per square meter
10 foot of head to bars, the result is 0.2989 bars
10 kip/square foot to pounds per square foot, the result is 10000 pounds per square foot
10 kip/square inch to pounds per square inch, the result is 10000 pounds per square inch
10 ounce/square inch to pounds per square inch, the result is 0.625 pounds per square inch
10 ton/square meter to newtons per square millimeter, the result is 0.0981 newtons per square millimeter
10 kip/square inch to kips per square foot, the result is 1440 kips per square foot

Table Conversion

With the following tool, you can generate and print the inchs of air [0 °C] to ounces per square inch reference table based on your own needs. You can find a dynamic tool at inchs of air [0 °C] to ounces per square inch table chart (in-air 0° to oz/in²) or ounces per square inch to inchs of air [0 °C] table chart (oz/in² to in-air 0°).

Inchs of air [0 °C] to Ounces per square inch
Ounces per square inch to Inchs of air [0 °C]

in-air 0°	oz/in²
1	= 0.0007
2	= 0.0015
3	= 0.0022
4	= 0.003
5	= 0.0037
6	= 0.0045
7	= 0.0052
8	= 0.006
9	= 0.0067
10	= 0.0075
11	= 0.0082
12	= 0.009
13	= 0.0097
14	= 0.0105
15	= 0.0112
16	= 0.012
17	= 0.0127
18	= 0.0135
19	= 0.0142
20	= 0.0149
21	= 0.0157
22	= 0.0164
23	= 0.0172
24	= 0.0179
25	= 0.0187

in-air 0°	oz/in²
26	= 0.0194
27	= 0.0202
28	= 0.0209
29	= 0.0217
30	= 0.0224
31	= 0.0232
32	= 0.0239
33	= 0.0247
34	= 0.0254
35	= 0.0262
36	= 0.0269
37	= 0.0276
38	= 0.0284
39	= 0.0291
40	= 0.0299
41	= 0.0306
42	= 0.0314
43	= 0.0321
44	= 0.0329
45	= 0.0336
46	= 0.0344
47	= 0.0351
48	= 0.0359
49	= 0.0366
50	= 0.0374

in-air 0°	oz/in²
51	= 0.0381
52	= 0.0389
53	= 0.0396
54	= 0.0404
55	= 0.0411
56	= 0.0418
57	= 0.0426
58	= 0.0433
59	= 0.0441
60	= 0.0448
61	= 0.0456
62	= 0.0463
63	= 0.0471
64	= 0.0478
65	= 0.0486
66	= 0.0493
67	= 0.0501
68	= 0.0508
69	= 0.0516
70	= 0.0523
71	= 0.0531
72	= 0.0538
73	= 0.0545
74	= 0.0553
75	= 0.056

in-air 0°	oz/in²
76	= 0.0568
77	= 0.0575
78	= 0.0583
79	= 0.059
80	= 0.0598
81	= 0.0605
82	= 0.0613
83	= 0.062
84	= 0.0628
85	= 0.0635
86	= 0.0643
87	= 0.065
88	= 0.0658
89	= 0.0665
90	= 0.0673
91	= 0.068
92	= 0.0687
93	= 0.0695
94	= 0.0702
95	= 0.071
96	= 0.0717
97	= 0.0725
98	= 0.0732
99	= 0.074
100	= 0.0747

oz/in²	in-air 0°
1	= 1338.2373510671
2	= 2676.4747021342
3	= 4014.7120532013
4	= 5352.9494042683
5	= 6691.1867553354
6	= 8029.4241064025
7	= 9367.6614574696
8	= 10705.898808537
9	= 12044.136159604
10	= 13382.373510671
11	= 14720.610861738
12	= 16058.848212805
13	= 17397.085563872
14	= 18735.322914939
15	= 20073.560266006
16	= 21411.797617073
17	= 22750.03496814
18	= 24088.272319208
19	= 25426.509670275
20	= 26764.747021342
21	= 28102.984372409
22	= 29441.221723476
23	= 30779.459074543
24	= 32117.69642561
25	= 33455.933776677

oz/in²	in-air 0°
26	= 34794.171127744
27	= 36132.408478811
28	= 37470.645829878
29	= 38808.883180946
30	= 40147.120532013
31	= 41485.35788308
32	= 42823.595234147
33	= 44161.832585214
34	= 45500.069936281
35	= 46838.307287348
36	= 48176.544638415
37	= 49514.781989482
38	= 50853.019340549
39	= 52191.256691616
40	= 53529.494042683
41	= 54867.731393751
42	= 56205.968744818
43	= 57544.206095885
44	= 58882.443446952
45	= 60220.680798019
46	= 61558.918149086
47	= 62897.155500153
48	= 64235.39285122
49	= 65573.630202287
50	= 66911.867553354

oz/in²	in-air 0°
51	= 68250.104904421
52	= 69588.342255489
53	= 70926.579606556
54	= 72264.816957623
55	= 73603.05430869
56	= 74941.291659757
57	= 76279.529010824
58	= 77617.766361891
59	= 78956.003712958
60	= 80294.241064025
61	= 81632.478415092
62	= 82970.715766159
63	= 84308.953117226
64	= 85647.190468294
65	= 86985.427819361
66	= 88323.665170428
67	= 89661.902521495
68	= 91000.139872562
69	= 92338.377223629
70	= 93676.614574696
71	= 95014.851925763
72	= 96353.08927683
73	= 97691.326627897
74	= 99029.563978964
75	= 100367.80133003

oz/in²	in-air 0°
76	= 101706.0386811
77	= 103044.27603217
78	= 104382.51338323
79	= 105720.7507343
80	= 107058.98808537
81	= 108397.22543643
82	= 109735.4627875
83	= 111073.70013857
84	= 112411.93748964
85	= 113750.1748407
86	= 115088.41219177
87	= 116426.64954284
88	= 117764.8868939
89	= 119103.12424497
90	= 120441.36159604
91	= 121779.5989471
92	= 123117.83629817
93	= 124456.07364924
94	= 125794.31100031
95	= 127132.54835137
96	= 128470.78570244
97	= 129809.02305351
98	= 131147.26040457
99	= 132485.49775564
100	= 133823.73510671

Inchs of air [0 °C]
Ounces per square inch

Inch of air [0 °C] is a unit of pressure equal to about 0.3220074 pascals and symbol is in-air 0°.

1 in-air 0° = 3.177966E-6 atm	inchs of air [0 °C] to atmospheres converter	inchs of air [0 °C] to atmospheres table
1 in-air 0° = 3.220074 barad	inchs of air [0 °C] to barads converter	inchs of air [0 °C] to barads table
1 in-air 0° = 3.220074E-6 bar	inchs of air [0 °C] to bars converter	inchs of air [0 °C] to bars table
1 in-air 0° = 3.220074 Ba	inchs of air [0 °C] to baryes converter	inchs of air [0 °C] to baryes table
1 in-air 0° = 3.220074 dyn/c²	inchs of air [0 °C] to dynes per square centimeter converter	inchs of air [0 °C] to dynes per square centimeter table
1 in-air 0° = 0.0833 ft-air 0°	inchs of air [0 °C] to feet of air [0 °C] converter	inchs of air [0 °C] to feet of air [0 °C] table
1 in-air 0° = 0.0879 ft-air 15°	inchs of air [0 °C] to feet of air [15 °C] converter	inchs of air [0 °C] to feet of air [15 °C] table
1 in-air 0° = 0.0001 ft-head	inchs of air [0 °C] to feet of head converter	inchs of air [0 °C] to feet of head table
1 in-air 0° = 7.924061E-6 ft-mercury 0°	inchs of air [0 °C] to feet of mercury [0 °C] converter	inchs of air [0 °C] to feet of mercury [0 °C] table
1 in-air 0° = 0.0001 ft-water 4°	inchs of air [0 °C] to feet of water [4 °C] converter	inchs of air [0 °C] to feet of water [4 °C] table
1 in-air 0° = 3.220074E-15 Gbar	inchs of air [0 °C] to gigabars converter	inchs of air [0 °C] to gigabars table
1 in-air 0° = 3.22E-10 Gpa	inchs of air [0 °C] to gigapascals converter	inchs of air [0 °C] to gigapascals table
1 in-air 0° = 1.055100914779 in-air 15°	inchs of air [0 °C] to inchs of air [15 °C] converter	inchs of air [0 °C] to inchs of air [15 °C] table
1 in-air 0° = 0.0001 in-mercury 0°	inchs of air [0 °C] to inchs of mercury [0 °C] converter	inchs of air [0 °C] to inchs of mercury [0 °C] table
1 in-air 0° = 0.0013 in-water 4°	inchs of air [0 °C] to inchs of water [4 °C] converter	inchs of air [0 °C] to inchs of water [4 °C] table
1 in-air 0° = 3.22E-9 kbar	inchs of air [0 °C] to kilobars converter	inchs of air [0 °C] to kilobars table
1 in-air 0° = 0.0003 kPa	inchs of air [0 °C] to kilopascals converter	inchs of air [0 °C] to kilopascals table
1 in-air 0° = 6.725264E-6 kip/ft²	inchs of air [0 °C] to kips per square foot converter	inchs of air [0 °C] to kips per square foot table
1 in-air 0° = 4.6703E-8 kip/in²	inchs of air [0 °C] to kips per square inch converter	inchs of air [0 °C] to kips per square inch table
1 in-air 0° = 3.0E-12 Mbar	inchs of air [0 °C] to megabars converter	inchs of air [0 °C] to megabars table
1 in-air 0° = 3.22007E-7 Mpa	inchs of air [0 °C] to megapascals converter	inchs of air [0 °C] to megapascals table
1 in-air 0° = 0.0254 m-air 0°	inchs of air [0 °C] to meters of air [0 °C] converter	inchs of air [0 °C] to meters of air [0 °C] table
1 in-air 0° = 0.0268 m-air 15°	inchs of air [0 °C] to meters of air [15 °C] converter	inchs of air [0 °C] to meters of air [15 °C] table
1 in-air 0° = 3.220074 µbar	inchs of air [0 °C] to microbars converter	inchs of air [0 °C] to microbars table
1 in-air 0° = 0.0032 mbar	inchs of air [0 °C] to millibars converter	inchs of air [0 °C] to millibars table
1 in-air 0° = 322.0074 mPa	inchs of air [0 °C] to millipascals converter	inchs of air [0 °C] to millipascals table
1 in-air 0° = 0.322 N/m²	inchs of air [0 °C] to newtons per square meter converter	inchs of air [0 °C] to newtons per square meter table
1 in-air 0° = 3.22007E-7 N/mm²	inchs of air [0 °C] to newtons per square millimeter converter	inchs of air [0 °C] to newtons per square millimeter table
1 in-air 0° = 0.0007 oz/in²	inchs of air [0 °C] to ounces per square inch converter	inchs of air [0 °C] to ounces per square inch table
1 in-air 0° = 0.322 Pa	inchs of air [0 °C] to pascals converter	inchs of air [0 °C] to pascals table
1 in-air 0° = 0.0003 pz	inchs of air [0 °C] to piezes converter	inchs of air [0 °C] to piezes table
1 in-air 0° = 0.0067 psft	inchs of air [0 °C] to pounds per square foot converter	inchs of air [0 °C] to pounds per square foot table
1 in-air 0° = 4.6703225E-5 psi	inchs of air [0 °C] to pounds per square inch converter	inchs of air [0 °C] to pounds per square inch table
1 in-air 0° = 3.283562E-6 at	inchs of air [0 °C] to technical atmosphere converter	inchs of air [0 °C] to technical atmosphere table
1 in-air 0° = 3.220074E-13 Tpa	inchs of air [0 °C] to terapascals converter	inchs of air [0 °C] to terapascals table
1 in-air 0° = 3.389718E-6 t/ft²-long	inchs of air [0 °C] to tonnes per square foot [long] converter	inchs of air [0 °C] to tonnes per square foot [long] table
1 in-air 0° = 3.362632E-6 t/ft²-short	inchs of air [0 °C] to tonnes per square foot [short] converter	inchs of air [0 °C] to tonnes per square foot [short] table
1 in-air 0° = 2.354E-8 t/in²-long	inchs of air [0 °C] to tonnes per square inch [long] converter	inchs of air [0 °C] to tonnes per square inch [long] table
1 in-air 0° = 2.3352E-8 t/in²-short	inchs of air [0 °C] to tonnes per square inch [short] converter	inchs of air [0 °C] to tonnes per square inch [short] table
1 in-air 0° = 3.2835617E-5 t/m²	inchs of air [0 °C] to tonnes per square meter converter	inchs of air [0 °C] to tonnes per square meter table
1 in-air 0° = 0.0024 torr	inchs of air [0 °C] to torrs converter	inchs of air [0 °C] to torrs table

Ounce / square inch is a unit of pressure equal to about 430.92233 pascals and symbol is oz/in².

1 oz/in² = 0.0043 atm	ounces per square inch to atmospheres converter	ounces per square inch to atmospheres table
1 oz/in² = 4309.2233 barad	ounces per square inch to barads converter	ounces per square inch to barads table
1 oz/in² = 0.0043 bar	ounces per square inch to bars converter	ounces per square inch to bars table
1 oz/in² = 4309.2233 Ba	ounces per square inch to baryes converter	ounces per square inch to baryes table
1 oz/in² = 4309.2233 dyn/c²	ounces per square inch to dynes per square centimeter converter	ounces per square inch to dynes per square centimeter table
1 oz/in² = 111.51977925559 ft-air 0°	ounces per square inch to feet of air [0 °C] converter	ounces per square inch to feet of air [0 °C] table
1 oz/in² = 117.66462110856 ft-air 15°	ounces per square inch to feet of air [15 °C] converter	ounces per square inch to feet of air [15 °C] table
1 oz/in² = 0.1442 ft-head	ounces per square inch to feet of head converter	ounces per square inch to feet of head table
1 oz/in² = 0.0106 ft-mercury 0°	ounces per square inch to feet of mercury [0 °C] converter	ounces per square inch to feet of mercury [0 °C] table
1 oz/in² = 0.1442 ft-water 4°	ounces per square inch to feet of water [4 °C] converter	ounces per square inch to feet of water [4 °C] table
1 oz/in² = 4.0E-12 Gbar	ounces per square inch to gigabars converter	ounces per square inch to gigabars table
1 oz/in² = 4.30922E-7 Gpa	ounces per square inch to gigapascals converter	ounces per square inch to gigapascals table
1 oz/in² = 1338.2373510671 in-air 0°	ounces per square inch to inchs of air [0 °C] converter	ounces per square inch to inchs of air [0 °C] table
1 oz/in² = 1411.9754533027 in-air 15°	ounces per square inch to inchs of air [15 °C] converter	ounces per square inch to inchs of air [15 °C] table
1 oz/in² = 0.1273 in-mercury 0°	ounces per square inch to inchs of mercury [0 °C] converter	ounces per square inch to inchs of mercury [0 °C] table
1 oz/in² = 1.729994052659 in-water 4°	ounces per square inch to inchs of water [4 °C] converter	ounces per square inch to inchs of water [4 °C] table
1 oz/in² = 4.309223E-6 kbar	ounces per square inch to kilobars converter	ounces per square inch to kilobars table
1 oz/in² = 0.4309 kPa	ounces per square inch to kilopascals converter	ounces per square inch to kilopascals table
1 oz/in² = 0.009 kip/ft²	ounces per square inch to kips per square foot converter	ounces per square inch to kips per square foot table
1 oz/in² = 0.0001 kip/in²	ounces per square inch to kips per square inch converter	ounces per square inch to kips per square inch table
1 oz/in² = 4.309E-9 Mbar	ounces per square inch to megabars converter	ounces per square inch to megabars table
1 oz/in² = 0.0004 Mpa	ounces per square inch to megapascals converter	ounces per square inch to megapascals table
1 oz/in² = 33.991227893733 m-air 0°	ounces per square inch to meters of air [0 °C] converter	ounces per square inch to meters of air [0 °C] table
1 oz/in² = 35.864177438332 m-air 15°	ounces per square inch to meters of air [15 °C] converter	ounces per square inch to meters of air [15 °C] table
1 oz/in² = 4309.2233 µbar	ounces per square inch to microbars converter	ounces per square inch to microbars table
1 oz/in² = 4.3092233 mbar	ounces per square inch to millibars converter	ounces per square inch to millibars table
1 oz/in² = 430922.33 mPa	ounces per square inch to millipascals converter	ounces per square inch to millipascals table
1 oz/in² = 430.92233 N/m²	ounces per square inch to newtons per square meter converter	ounces per square inch to newtons per square meter table
1 oz/in² = 0.0004 N/mm²	ounces per square inch to newtons per square millimeter converter	ounces per square inch to newtons per square millimeter table
1 oz/in² = 430.92233 Pa	ounces per square inch to pascals converter	ounces per square inch to pascals table
1 oz/in² = 0.4309 pz	ounces per square inch to piezes converter	ounces per square inch to piezes table
1 oz/in² = 9 psft	ounces per square inch to pounds per square foot converter	ounces per square inch to pounds per square foot table
1 oz/in² = 0.0625 psi	ounces per square inch to pounds per square inch converter	ounces per square inch to pounds per square inch table
1 oz/in² = 0.0044 at	ounces per square inch to technical atmosphere converter	ounces per square inch to technical atmosphere table
1 oz/in² = 4.31E-10 Tpa	ounces per square inch to terapascals converter	ounces per square inch to terapascals table
1 oz/in² = 0.0045 t/ft²-long	ounces per square inch to tonnes per square foot [long] converter	ounces per square inch to tonnes per square foot [long] table
1 oz/in² = 0.0045 t/ft²-short	ounces per square inch to tonnes per square foot [short] converter	ounces per square inch to tonnes per square foot [short] table
1 oz/in² = 3.1501721E-5 t/in²-long	ounces per square inch to tonnes per square inch [long] converter	ounces per square inch to tonnes per square inch [long] table
1 oz/in² = 3.125E-5 t/in²-short	ounces per square inch to tonnes per square inch [short] converter	ounces per square inch to tonnes per square inch [short] table
1 oz/in² = 0.0439 t/m²	ounces per square inch to tonnes per square meter converter	ounces per square inch to tonnes per square meter table
1 oz/in² = 3.232183241267 torr	ounces per square inch to torrs converter	ounces per square inch to torrs table

Pressure Units

English

Pressure

Atmosphere

atmosphere is a unit of pressure equal to 101 325 pascals and symbol is atm.

Barad

barad is a unit of pressure equal to 0.1 pascals and symbol is barad.

Bar

The bar is a unit of pressure defined as 100 kilopascals. It is about equal to the atmospheric pressure on Earth at sea level.

Barye

barye is a unit of pressure equal to 0.1 pascals and symbol is Ba.

Dyne / square centimeter

dyne / square centimeter is a unit of pressure equal to 0.1 pascals and symbol is dyn/c².

Foot of air [0 °C]

foot of air [0 °C] is a unit of pressure equal to about 3.8640888 pascals and symbol is ft-air 0° .

Foot of air [15 °C]

foot of air [15 °C] is a unit of pressure equal to about 3.6622931 pascals and symbol is ft-air 15° .

Foot of head

foot of head is a unit of pressure equal to about 2989.0669 pascals and symbol is ft-head.

Foot of mercury [0 °C]

foot of mercury [0 °C] is a unit of pressure equal to about 40636.664 pascals and symbol is ft-mercury 0°.

Foot of water [4 °C]

foot of water [4 °C] is a unit of pressure equal to about 2989.0669 pascals and symbol is ft-water 4°.

Gigabar

gigabar is a unit of pressure, a combination of metric-prefix "giga" and unit of pressure "bar", equal to 10¹⁴ pascals and symbol is Gbar.

Gigapascal

Gigapascal is, a combination of metric-prefix "giga" and the SI derived unit of pressure "pascal", a unit of pressure equal to 10⁹ pascals and symbol is Gpa.

Inch of air [0 °C]

Inch of air [0 °C] is a unit of pressure equal to about 0.3220074 pascals and symbol is in-air 0°.

Inch of air [15 °C]

Inch of air [15 °C] is a unit of pressure equal to about 0.3051910916666667 pascals and symbol is in-air 15°.

Inch of mercury [0 °C]

Inch of mercury [0 °C] is a unit of pressure equal to about 3386.388666666667 pascals and symbol is in-mercury 0°.

Inch of water [4 °C]

Inch of water [4 °C] is a unit of pressure equal to about 249.0889083333333 pascals and symbol is in-water 4°.

Kilobar

Kilobar is, a mixture of metric-prefix "kilo" and unit of pressure "bar", a unit of pressure equal to 100000000 pascals and symbol is kbar.

Kilopascal

Kilopascal is, a combination of metric-prefix "kilo" and the SI derived unit of pressure "pascal", a unit of pressure equal to xx pascals and symbol is kPa.

Kip / square foot

Kip / square foot is a unit of pressure equal to about 47880.25888888889 pascals and symbol is kip/ft².

Kip / square inch

Kip/square inch is a unit of pressure equal to about 6894757.28 pascals and symbol is kip/in².

Megabar

Megabar (mega + bar) is a unit of pressure equal to 10¹¹ pascals and symbol is Mbar.

Megapascal

Megapascal is a unit of pressure equal to 10⁶ pascals and symbol is Mpa.

Meter of air [0 °C]

Meter of air [0 °C] is a unit of pressure equal to about 12.677457 pascals and symbol is m-air 0°.

Meter of air [15 °C]

Meter of air [15 °C] is a unit of pressure equal to about 12.015397 pascals and symbol is m-air 15°.

Microbar

Microbar (micro + bar) is a unit of pressure equal to 0.1 pascals and symbol is µbar.

Millibar

Millibar (milli + bar) is a unit of pressure equal to 100 pascals and symbol is mbar.

Millipascal

Millipascal is a unit of pressure equal to 0.001 pascals and symbol is mPa.

Newton / square meter

Newton / square meter is a unit of pressure equivalent to pascals and symbol is N/m².

Newton / square millimeter

Newton / square millimeter is a unit of pressure equal to 10⁶ pascals and symbol is N/mm².

Ounce / square inch

Ounce / square inch is a unit of pressure equal to about 430.92233 pascals and symbol is oz/in².

Pascal

Pascal is the SI derived unit of pressure (symbol Pa).

Pieze

The pièze is the unit of pressure in the metre-tonne-second system of units (mts system), used, e.g., in the former Soviet Union 1933-1955. It is defined as one sthène per square metre. The symbol is pz.

Pound / square foot

Pound / square foot is a unit of pressure equal to about 47.88 pascals and symbol is psft.

Pound / square inch

Pound / square inch is a unit of pressure equal to about 6894.75728 pascals and symbol is psi.

Technical atmosphere

Technical atmosphere is a unit of pressure equal to about 98066.5 pascals and symbol is at.

Terapascal

Terapascal is a combination of metric-prefix "tera" and SI derived unit of pressure "pascal", it's equal to 10¹² pascals and symbol is Tpa.

Ton / square foot [long]

Ton / square foot [long] is a unit of pressure equal to about 94995.32252 pascals and symbol is t/ft²-long.

Ton / square foot [short]

Ton / square foot [short] is a unit of pressure equal to about 95760.52 pascals and symbol is t/ft²-short.

Ton / square inch [long]

Ton / square inch [long] is a unit of pressure equal to about 13679326.44352 pascals and symbol is t/in²-long.

Ton / square inch [short]

Ton / square inch [short] is a unit of pressure equal to about 13789514.56 pascals and symbol is t/in²-short.

Ton / square meter

Ton / square meter is a unit of pressure equal to about 9806.65 pascals and symbol is t/m².

Torr

Torr is a a non-SI unit of pressure equal to about 133.32237 pascals and symbol is torr.