Viscosity Conversion Chart ISO 3mm
ISO 4mm
ISO 6mm
Afnor 2.5
Afnor 4
BS B4
Ford 4
Zahn 2
13 14.5 15 15.5 16 17 18
BS B3 20 22 24 26 28 30 32 34
15 16 17 18.5 20
12
16 17 20 20.5 21.5
12
22.5
16
25 30.5 37 44 50 57 64
18 20 22 26 30
37 41 45 50 56 60 65.5
71
34
70
19
36
21.5
78
37 38 40 41 43 45 48 53 58 63 68 72 78 82 88 93
76 80 87 92
19.5 20
38 40 42 44 46 47 50 54 58 64 66 70 74 78 82 86 90
22.5 23 23.5 24 25 26 27 29 30.5 33 34.5 36 38 40 42 44 46 50 55 60 65 70 75 80 85 90
10
23
11 25 11.5 27 12 33 34 16.5 37 18 42 20 48 22.5 57 27 64 31.5
72
36
78
15 16.5 18.5
23
24 25 26 27 28 29 30.5
24.5
35
29.5
41
32
44
36
48
39.5
52 58
20 21.5
Zahn 3
Zahn 4
Poise
Krebs
Centistokes
Saybolt Univ.
0.50
30
50
260
1.00
40
100
530
2.00
52
200
1000
3.00
60
300
1475
4.00
64
400
1950
5.00
68
500
2480
6.00
71
600
2900
14 15
17 19 20
10 12
10
14
11
15
12
20 23
16 17
34 39 39 41 43 46 48 50 52 54 57 63 68
25 25 26 28 29 30 32 33 34 36 37 40 44 51 58 64
22 23 25 26 27 28 29.5 31 32 33 36
47 66
43
56 82
51
65 74
38.5
80
41
85
43
90
This table is compiled from various sources and values are necessarily approximate, it should not be used where absolute acuracy is required Viscosity readings will vary depending on the temperature, sg and thixotropic behaviour of the fluid Viscosity Conversion Factors To Convert Multiply By Centipoise to Pascal Seconds 10-3 Poise to Pascal Seconds 10-1 Pascal Seconds to Centripoise 103 Poise to Centipoise 102 Centistokes to metre2/second 10-6 Metre2/second to Centistokes 105 Kinematic Viscosity to Dynamic ViscositySG
Din 4