Make: The Annotated Build-It-Yourself Science Laboratory (2015)
Part IV. Appendix
Appendix B. Weights and Measures
SI base units:
Base quantity |
Name |
Symbol |
length |
meter |
m |
mass |
kilogram |
kg |
time |
second |
s |
electric current |
ampere |
A |
thermodynamic temperature |
kelvin |
K |
amount of substance |
mole |
mol |
luminous intensity |
candela |
cd |
Linear measures:
12 inch |
1 foot |
3 feet |
1 yard |
1760 yards |
1 mile |
1 inch |
2.54 cm (exact; definition of inch.) |
1 centimeter (cm) |
10 millimeters (mm) |
1 meter (m) |
100 cm |
1 kilometer (km) |
1000 m |
1 astronomical unit |
149,597,871 km (mean distance between Earth and the sun) |
1 light year |
9.4607 × 1012 km (distance travelled by light in a year) |
Quantity measures:
1 dozen |
12 units |
1 score |
20 units |
1 gross |
144 units |
1 mole |
6.022 × 1023 units |
Liquid volume measures:
1 milliliter (ml) |
1 cubic centimeter (cc or cm3) |
1 liter |
1000 ml |
1 cubic inch |
1.11 tablespoon |
1 tablespoon |
3 teaspoons |
1 teaspoon |
4.93 ml |
1 fluid ounce (fl oz) |
2 tablespoons |
1 fl oz |
8 drams |
1 cup |
8 fl oz |
1 pint (pt) |
2 cups |
1 quart (qt) |
2 pints |
1 gallon (US) |
4 quarts |
1 liter |
1.057 quart |
1 cubic inch |
16.4 milliliter |
Weight/mass measures:
1 kg |
1000 grams (g) |
1 kg |
2.204 pounds (lb) |
1 lb |
454 g |
1 lb |
16 ounces (oz) |
1 oz |
28.35 g |
1 metric ton |
1000 kg |
1 ton |
2000 lb |
Time measures:
1 minute (m) |
60 s |
1 hour |
60 m |
1 day |
24 h |
1 day |
86400 s |
1 week |
7 days |
1 year |
365.25 days |
1 century |
100 years |