Fermi Reference Values (Units)

All fermi reference values that can be used to either directly answer a fermi question or aid in calculating an answer to a fermi question. This flashcard set specifically focuses on units.

deci-

-1

centi-

\-2

milli-

\-3

micro-

\-6

nano-

\-9

pico-

\-12

femto-

\-15

atto-

\-18

zepto-

\-21

yocto-

\-24

ronto-

\-27

quecto-

\-30

deca-

1

hecto-

2

kilo-

3

mega-

6

giga-

9

tera-

12

peta-

15

exa-

18

zetta-

21

yotta-

24

ronna-

27

quetta-

30

Faraday’s Constant

96500 Coulombs (C) / mol

Threshold of Hearing (I0)

1e-12 W / m^2

Decibel

120log(I) dB

Planck Time

5\.39e-44 s

Day

86400 s

Week

6\.05e5 s

Fortnight

1\.21e6 s

Month

2\.62e6 s

Year

3\.15e7 s

Olympiad (4 years)

1\.26e8 s

Lustrum (5 years)

1\.58e8 s

Foot

0\.3048 m

Mile

1609 m

Inch

0\.0254 m

Furlong (660 feet)

201 m

Chain (66 feet)

20\.1 m

Altuve

1\.65 m

Parsec

3\.09e16 m

Beardsecond

1e-8 m

Smoot

1\.7 m

Wiffle

0\.089 m

Angstrom

1e-10 m

Lightyear

9\.46e15 m

Square Foot

0\.0929 m^2

Hectare

10000 m^2

Acre

4047 m^2

Barn

1e-28 m^2

PLSS (Public Land Surveying System) Section

2\.59e6 m^2

mph

0\.447 m / s

km / h

0\.278 m / s

Knot

0\.514 m / s

Snail

0\.013 m / s

Cord

3625 L

Cubic Meter

1000 L

Cubic Foot

28\.3 L

US Gallon

3\.79 L

US Quart

0\.95 L

US Pint

0\.47 L

US Cup

0\.24 L

Imperial Gallon

4\.55 L

Cubic Inch (answer in mL)

16\.4 mL

Fluid Ounce (answer in mL)

29\.6 mL

Tablespoon (answer in mL)

14\.8 mL

Teaspoon (answer in mL)

4\.92 mL

Pound

0\.454 kg

Firkin

40\.8 kg

Solar Mass

1\.99e30 kg

Dalton

1\.66e-27 kg

Ton (Imperial)

907 kg

Ounce (Imperial)

0\.0283 kg

Slug (Imperial)

14\.6 kg

British Thermal Unit (Btu) / h (Convert to both Watts and Joules)

3\.412 W, 9.48e-4 J

hp (answer in Watts)

746 W

Cal / min (answer in Watts)

14\.34 W

Calorie

4184 J

ft \* lb

0\.738 J

kW \* h (Kilowatt Hour)

3\.6e6 J

eV (Electron Volt)

1\.6e-19 J