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Viscosity Converting Chart

Convert between viscosity units like Centiposes, milliPascal, CentiStokes and SSU.

Viscosity of a fluid is its resistance to shear or flow, and a measure of a fluid adhesive/cohesive or frictional properties. This arises because of the internal molecular friction within the fluid producing the frictional drag effect. There are two related measures of fluid viscosity which are known as dynamic and kinematic viscosity.

viscosity

Dynamic viscosity is also termed " absolute viscosity " and is the tangential force per unit area required to move one horizontal plane with respect to the other at unit velocity when maintained a unit distance apart by the fluid.

Note that the conversion from Absolute (Dynamic) Viscosity to Kinematic Viskosity depends on fluid density . The conversions below are for fluid with density like water - where

specific gravity = 1

Water - Absolute to Kinematic Viscosities Converter
Absolute Viscosity Kinematic Viscosity
centiPoise
(10-3 N s/m2, cP)
p oise
( 10-1 N s/m2, P) 		c entiStokes
( 10-6 m2/s, mm2/s, cSt) 		s tokes
(1 0-4 m2/s, S) 		Saybolt Seconds Universal
(SSU) 1)
at 100 oF (37.8 oC) at 210 oF (98.9 oC)
1 2) 0.01 1 0.01
2 0.02 2 0.02 32.6 32.8
4 0.04 4 0.04 39.2 39.5
7 0.07 7 0.07 48.8 49.1
10 0.1 10 0.1 58.8 59.2
15 0.15 15 0.15 77.4 77.9
20 0.2 20 0.2 97.8 98.5
25 0.24 25 0.24 119.4 120.2
30 0.3 30 0.3 141.5 142.5
40 0.4 40 0.4 186.8 188.0
50 0.5 50 0.5 233 234
60 0.6 60 0.6 279 280
70 0.7 70 0.7 325 327
80 0.8 80 0.8 371 373
90 0.9 90 0.9 417 420
100 1 100 1 463 467
120 1.2 120 1.2 556 560
140 1.4 140 1.4 649
160 1.6 160 1.6 741
180 1.8 180 1.8 834
200 2 200 2 927
220 2.2 220 2.2 1019
240 2.4 240 2.4 1112
260 2.6 260 2.6 1204
280 2.8 280 2.8 1297
300 3 300 3 1390
320 3.2 320 3.2 1482
340 3.4 340 3.4 1575
360 3.6 360 3.6 1668
380 3.8 380 3.8 1760
400 4 400 4 1853
420 4.2 420 4.2 1946
440 4.4 440 4.4 2038
460 4.6 460 4.6 2131
480 4.8 480 4.8 2224
500 5 500 5 2316
550 5.5 550 5.5
600 6 600 6
700 7 700 7
800 8 800 8
900 9 900 9
1000 10 1000 10
1100 11 1100 11
1200 12 1200 12
1300 13 1300 13
1400 14 1400 14
1500 15 1500 15
1600 16 1600 16
1700 17 1700 17
1800 18 1800 18
1900 19 1900 19
2000 20 2000 20
2100 21 2100 21
2200 22 2200 22
2300 23 2300 23
2400 24 2400 24
2500 25 2500 25
3000 30 3000 30
3500 35 3500 35
4000 40 4000 40
4500 45 4500 45
5000 50 5000 50
5500 55 5500 55
6000 60 6000 60
6500 65 6500 65
7000 70 7000 70
7500 75 7500 75
8000 80 8000 80
8500 85 8500 85
9000 90 9000 90
9500 95 9500 95
15000 150 15000 150
20000 200 20000 200
30000 300 30000 300
40000 400 40000 400
50000 500 50000 500
60000 600 60000 600
70000 700 70000 700
80000 800 80000 800
90000 900 90000 900
100000 1000 100000 1000
125000 1250 125000 1250
150000 1500 150000 1500
175000 1750 175000 1750
200000 2000 200000 2000

1) The Saybolt Universal SUS viscosity equivalent (SSU or SUS) to a given kinematic viscosity varies with the temperature at which the determination is made. Check ASTM D 2161 "Standard Practice for Conversion of Kinematic Viscosity to Saybolt Universal Viscosity or to Saybolt Furol Viscosity"

2) Water at 68.4 oF (20.2 oC) has an absolute viscosity of one - 1 - centiPoise .

Note! Viscosity conversions are based on fluids with specific gravity of one.

Saybolt Second Universal (SSU) Viscosity at temperatures other than 100 or 210 oF

At temperatures other than 100 or 210°F, convert kinematic viscosity to Saybolt Universal viscosity with

U t = U 100°F (1 + 0.000061 (t - 100))                                                     (1)

where

U t = Saybolt Second Universal (SSU) viscosity at temperature t (°F)

U 100°F = Saybolt Second Universal (SSU) viscosity at 100°F in Saybolt Universal seconds equivalent to kinematic viscosity in centiStokes at temperature t (°F)

Kinematic viscosity units converting chart

Download and print Kinematic Viscosity Unit Converting Chart

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