Three approaches to mass and force units^[1][2]

v · d · e Base	force, length, time		weight, length, time		mass, length, time
Force (F)	F = m·a = w·a/g		F = m·a/gc = w·a/g		F = m·a = w·a/g
Weight (w)	w = m·g		w = m·g/gc ≈ m		w = m·g
System	BG	GM	EE	M	AE	CGS	MTS	SI
Acceleration (a)	ft/s2	m/s2	ft/s2	m/s2	ft/s2	gal	m/s2	m/s2
Mass (m)	slug	hyl, also called “metric slug” or “TME”	lbm	kg	lb	g	t	kg
Force (F)	lb	kp	lbF	kp	pdl	dyn	sn	N
Pressure (p)	lb/in2	at	PSI	atm	pdl/ft2	Ba	pz	Pa

Documentation

This table previously included rows that provided common labels or descriptions for the three approaches, i.e.

• technical (force column),
• gravitational (force or weight column),
• engineering (force or weight column),
• colloquial (weight column),
• pre-newtonian (weight column),
• absolute (mass column, also force column),
• scientific (mass column),
• coherent (force and mass columns),
• incoherent (weight column).

This was deemed inappropriate and should be discussed in surrounding prose where necessary.

Parameter system

Three approaches to metric mass and force units^[1][2]

v · d · e Base	force, length, time	weight, length, time	mass, length, time
Force (F)	F = m·a = w·a/g	F = m·a/gc = w·a/g	F = m·a = w·a/g
Weight (w)	w = m·g	w = m·g/gc ≈ m	w = m·g
System	GM	M	CGS	MTS	SI
Acceleration (a)	m/s2	m/s2	gal	m/s2	m/s2
Mass (m)	hyl, also called “metric slug” or “TME”	kg	g	t	kg
Force (F)	kp	kp	dyn	sn	N
Pressure (p)	at	atm	Ba	pz	Pa

Three approaches to English mass and force units^[1][2]

v · d · e Base	force, length, time	weight, length, time	mass, length, time
Force (F)	F = m·a = w·a/g	F = m·a/gc = w·a/g	F = m·a = w·a/g
Weight (w)	w = m·g	w = m·g/gc ≈ m	w = m·g
System	British Gravitational (BG)	English Engineering (EE)	Absolute English (AE)
Acceleration (a)	ft/s2	ft/s2	ft/s2
Mass (m)	slug	lbm	lb
Force (F)	lb	lbF	pdl
Pressure (p)	lb/in2	PSI	pdl/ft2