| English-to-English |
| 1
foot |
= |
12
inches |
| 3
feet |
= |
1
yard |
| 5280
feet |
= |
1
mile |
| 1
gallon |
= |
4
quarts |
| 1
quart |
= |
2
pints |
| 1
pint |
= |
16
ounces |
| 1
ton |
= |
2000
pounds |
| Pressure |
| 1
atm |
= |
760
torr (defined) |
| 760
torr |
= |
760
mm of Hg |
| 1
atm |
= |
14.70
lbs/in2 (psi) |
| 1
atm |
= |
1.01325
x 105 Pa |
|
| English-to-Metric |
| 1
inch |
= |
2.54
cm (defined) |
| 1
pound |
= |
453.6
grams |
| 1
cal |
= |
4.184
J (defined) |
| 1.056
qts |
= |
1
L |
| 1
gal |
= |
3.785
L |
|
1 Å |
= |
10-10
m |
| 1
L·atm |
= |
101.325
J |
you should memorize everything with a
|
| Metric
Prefixes |
| prefix
name |
symbol |
multiplier |
| pico
|
p |
10-12 |
| nano |
n |
10-9 |
| micro
|
µ |
10-6 |
| milli
|
m |
10-3 |
| centi
|
c |
10-2 |
| deci
|
d |
10-1 |
| kilo |
k |
103 |
| mega |
M |
106 |
| giga |
G |
109 |
| tera |
T |
1012 |
|