| Workshop Calculation and Science

Pressure

Unit	Equivalent
Pascal	1 Pa = 1 N/m²
Bar	1 bar = 10 N/cm² = 100000 Pa
Atmosphere	1 atm = 101325 Pa ≈ 1.033 kgf/cm²
Torr	1 torr = 101325 / 760 Pa ≈ 133.32 Pa
kgf/cm²	1 kgf/cm² = 735.6 mm of Hg

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Temperature

Scale	Freezing Point	Boiling Point
Centigrade (°C)	0°C	100°C
Fahrenheit (°F)	32°F	212°F
Kelvin (K)	273 K	373 K
Reaumur (°R)	0°R	80°R

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Circular Unit

Radian

Relationship between Radian and Degree

1 Radian = 180° / π
180° = π Radian
1 Degree = π / 180 Radian

Unit, Fractions - Measurement Units and Conversion

Units and Abbreviations

Quantity	Units	Abbreviation of Unit
Calorific Value	kilojoules per kilogram	kJ/kg
Specific Fuel Consumption	kilogram per hour per newton	kg/hr/N
Length	millimetre, metre, kilometre

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Power

Unit	Equivalent
Kilogram-force metre/second	1 kgf·m/s = 9.80665 W
Kilowatt	1 kW = 1000 W = 1000 J/s ≈ 102 kgf·m/s
Metric Horsepower	1 HP = 75 kgf·m/s = 0.736 kW
Calorie	1 cal = 4.187 J
I.T. Kilocalorie per hour

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Work

Unit	Equivalent
Kilogram-force metre	1 kgf·m = 9.80665 J
Metre (in kgf system)	1 kgf·m = 9.80665 Ws
Joule	1 J = 1 N·m
Watt-second	1 Ws = 1 J = 0.102 kgf·m
Kilowatt-hour	1 kWh = 3.6 × 10⁶ J = 859.85 kcal

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Force

In C.G.S System:
Force (Dyne) = Mass (g) × Acceleration (cm/s²)

In F.P.S System:
Force (Poundal) = Mass (lb) × Acceleration (ft/s²)

In M.K.S System:
Force (Newton) = Mass (kg) × Acceleration (m/s²)

Unit	Equivalent
1 Dyne	1 g × 1 cm/s²
1 Poundal	1 lb × 1 ft/s²

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Fundamental Units of F.P.S, C.G.S, M.K.S and S.I

S.No.	Basic Quantity	F.P.S		C.G.S		M.K.S		S.I Units
S.No.	Basic Quantity	Unit	Symbol	Unit	Symbol	Unit	Symbol	Unit	Symbol
1

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Workshop Calculation & Science - Fitter

Unit, Fractions - Classification of Unit

Necessity

All physical quantities are to be measured in terms of standard quantities.

Unit

A unit is defined as a standard or fixed quantity of one kind used to measure other quantities of the same kind.

Classification

Fundamental units and derived units are the two classifications.

Fundamental Units

Units of basic quantities of length, mass and time.

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Necessity
All physical quantities are to be measured in terms of standard quantities.

Unit
A unit is defined as a standard or fixed quantity of one kind
used to measure other quantities of the same kind.

Classification
Fundamental units and derived units are the two classifications.

Fundamental units
Units of basic quantities of length, mass and time.

Read more about Classification of Unit System
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Pressure

Pressure

Temperature

Temperature

Circular Unit

Circular Unit

Radian

Unit, Fractions - Measurement Units and Conversion

Unit, Fractions - Measurement Units and Conversion

Units and Abbreviations

Power

Power

Work

Work

Force

Force

Fundamental Units of F.P.S, C.G.S, M.K.S and S.I

Fundamental Units of F.P.S, C.G.S, M.K.S and S.I

Unit, Fractions - Classification of Unit

Workshop Calculation & Science - Fitter

Unit, Fractions - Classification of Unit

Necessity

Unit

Classification

Fundamental Units

Classification of Unit System

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