Guide for the Use of the International System of Units (SI)

3.048 E−01 m 
and substitute these values into the unit lb·ft/s to obtain
1 lb·ft/s = 0.453 592 4 kg × 0.3048 m/s 
= 0.138 255 0 kg·m/s 
and the factor is 1.382 550 E−01. 
To find the factor for converting values in (avoirdupois) oz·in
2
to values in kg·m
2
, obtain from 
Sec. B.8 or B.9 
1 oz = 2.834 952 E−02 kg 
1 
in
2
= 6.4516 E−04 m
2 
and substitute these values into the unit oz·in
2
to obtain 
1 
oz·in
2
= 0.028 349 52 kg × 0.000 645 16 m
2
= 0.000 018 289 98 kg·m
2
and the factor is 1.828 998 E−05. 
B.4 Organization of entries and style 
 
In Sec. B.8 the units for which factors are given are listed alphabetically, while in Sec B.9 the same 
units are listed alphabetically within the following alphabetized list of kinds of quantities and fields of 
science: 
ACCELERATION 
FORCE DIVIDED BY LENGTH
ANGLE HEAT 
AREA AND SECOND MOMENT
Available Energy 
OF AREA 
Coefficient of Heat Transfer 
CAPACITY (see VOLUME) 
Density of Heat 
DENSITY (that is, MASS DENSITY) 
Density of Heat Flow Rate 
(see MASS DIVIDED BY VOLUME) 
Fuel Consumption
ELECTRICITY and MAGNETISM 
Heat Capacity and Entropy 
ENERGY (includes WORK) 
Heat Flow Rate 
ENERGY DIVIDED BY AREA TIME 
Specific Heat Capacity and Specific Entropy 
FLOW (see MASS DIVIDED BY TIME
Thermal Conductivity 
or VOLUME DIVIDED BY TIME) 
Thermal Diffusivity
FORCE
Thermal 
Insulance 

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Guide for the Use of the International System of Units (SI) 
 
42 
FORCE DIVIDED BY AREA 
Thermal Resistance 
(see PRESSURE) 
Thermal Resistivity 
LENGTH POWER 
LIGHT PRESSURE 
or STRESS (FORCE 
MASS and MOMENT OF INERTIA 
DIVIDED BY AREA) 
MASS DENSITY (see MASS DIVIDED 
RADIOLOGY 
BY VOLUME) 
SPEED (see VELOCITY)
MASS DIVIDED BY AREA 
STRESS (see PRESSURE) 
MASS DIVIDED BY CAPACITY 
TEMPERATURE 
(see MASS DIVIDED BY VOLUME) 
TEMPERATURE INTERVAL 
MASS DIVIDED BY LENGTH 
TIME 
MASS DIVIDED BY TIME 
TORQUE (see MOMENT OF FORCE) 
(includes FLOW) 
VELOCITY (includes SPEED) 
MASS DIVIDED BY VOLUME 
VISCOSITY, DYNAMIC 
(includes MASS DENSITY and 
VISCOSITY, KINEMATIC 
MASS 
CONCENTRATION) 
VOLUME 
(includes 
CAPACITY) 
MOMENT OF FORCE or TORQUE 
VOLUME DIVIDED BY TIME 
MOMENT OF FORCE or TORQUE, 
(includes FLOW) 
DIVIDED BY LENGTH 
WORK (see ENERGY) 
PERMEABILITY 
In Secs. B.8 and B.9, the units in the left-hand columns are written as they are often used 
customarily; the rules and style conventions recommended in this Guide are not necessarily observed. 
Further, many are obsolete and some are not consistent with good technical practice. The corresponding 
units in the center columns are, however, written in accordance with the rules and style conventions 
recommended in this Guide.