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DigitalDan
 
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Please let me know if you find any errors in these tables.
Acceleration
  • 1 foot per second squared (ft/s2) = 0.3048 metre/second squared (m s-2)
Alcohol
  • 1 Degrees proof (uk) (°) = 0.5714 % vol
  • 1 Degrees proof (us) (°) = 0.5 % vol
Angle
  • 1 Gradian (Grad) = 0.9 degrees (°)
  • 1 milli-radian (mRad) = 0.0573 degrees (°)
  • 1 Minute (') = 0.01667 degrees (°)
  • 1 Quadrant (Quad) = 90 degrees (°)
  • 1 Radian (Rad) = 57.3 degrees (°)
  • 1 Revolution (rev) = 360 degrees (°)
  • 1 Second (") = 0.0002778 degrees (°)
Area
  • 1 acre = 4047 square metre (m2)
  • 1 are (a) = 100 square metre (m2)
  • 1 hectare (ha) = 10000 square metre (m2)
  • 1 perch = 25.29 square metre (m2)
  • 1 rood = 1012 square metre (m2)
  • 1 square centimetre (cm2) = 0.0001 square metre (m2)
  • 1 square foot (sq.ft) = 0.0929 square metre (m2)
  • 1 square inch (sq.") = 0.0006452 square metre (m2)
  • 1 square kilometre (km2) = 1000000 square metre (m2)
  • 1 square mile (sq.M) = 2590000 square metre (m2)
  • 1 square yard (sq.yd) = 0.8361 square metre (m2)
Body Mass Index (BMI)
  • Body Mass Index = mass (Kg) ÷ height(m)2
Current
  • 1 aberampere (aA) = 10 ampere (A)
  • 1 Biot (Bi) = 10 ampere (A)
  • 1 statampere = 3.33564 x 10-10 ampere (A)
Economy (Fuel)
  • 1 kilometres per gallon (us) = 264.2 metres/litre (m L-1)
  • 1 kilomtres per gallon (uk) = 354 metres/litre (m L-1)
  • 1 kilomtres per litre = 1000 metres/litre (m L-1)
  • 1 miles per gallon (us) = 425.1 metres/litre (m L-1)
  • 1 miles per gallon (uk) = 0.354 metres/litre (m L-1)
  • 1 miles per litre = 1609 metres/litre (m L-1)
Energy
  • 1 British Thermal Unit (BTU) = 1055 joule (J)
  • 1 Electron Volt (eV) = 1.602E-19 joule (J)
  • 1 erg (erg) = 0.0000001 joule (J)
  • 1 foot pound force = 1.356 joule (J)
  • 1 gram calorie = 4.184
  • 1 therm = 105500000 joule (J)
  • 1 watt hour (W h) = 3600 joule (J)
Force
  • 1 dyne = 0.00001 Newton (N)
  • 1 gram force = 0.009807 newton (N)
  • 1 pound force = 4.448 newton (N)
  • 1 ton-force (uk) = 9964 newton (N)
  • 1 tonne-force = 9609 Newton (N)
Length Imperial
  • 1 Angstrom (A) = 0.0000000001 metre (m)
  • 1 atronomical unit (au) = 149600000000 metre (m)
  • 1 barleycorn = 0.008467 metre (m)
  • 1 cable (land) = 185.2 metre (m)
  • 1 cable (long) = 219.5 metre (m)
  • 1 cable (naut) = 182.9 metre (m)
  • 1 cable (rn) = 185.3 metre (m)
  • 1 chain = 20.12 metre (m)
  • 1 cubit = 0.4572 metre (m)
  • 1 degree (°) = 111100 metre (m)
  • 1 digit = 0.01905 metre (m)
  • 1 ell = 1.143 metre (m)
  • 1 fathom = 1.829 metre (m)
  • 1 finger = 0.02223 metre (m)
  • 1 foot (ft) = 0.3048 metre (m)
  • 1 furlong = 201.2 metre (m)
  • 1 hand = 0.1016 metre (m)
  • 1 inch (") = 0.0254 metre (m)
  • 1 league (land) = 4828 metre (m)
  • 1 league (naut) (uk) = 5560 metre (m)
  • 1 lightyear = 9461000000000000 metre (m)
  • 1 link = 0.2012 metre (m)
  • 1 micron (µ) = 0.000001 metre (m)
  • 1 mil = 0.0000254 metre (m)
  • 1 mile (M) = 1609 metre (m)
  • 1 mile (naut) (international) (n M) = 1852 metre (m)
  • 1 mile (naut) (uk) (n M) = 1853 metre (m)
  • 1 nail = 0.05715 metre (m)
  • 1 pace (geometrical) = 1.524 metre (m)
  • 1 pace (military) = 0.762 metre (m)
  • 1 palm = 0.9144 metre (m)
  • 1 parsec = 30860000000000000 metre (m)
  • 1 perch = 5.029 metre (m)
  • 1 pole = 5.029 metre (m)
  • 1 rod = 5.029 metre (m)
  • 1 rope = 6.096 metre (m)
  • 1 shackle = 22.86 metre (m)
  • 1 shaftment = 0.1524 metre (m)
  • 1 span = 0.2286 metre (m)
  • 1 thou = 0.0000254 metre (m)
  • 1 vigrate = 5.029 metre (m)
  • 1 yard (yd) = 0.9144 metre (m)
Mass
  • 1 atomic mass unit (amu) = 1.661E-24 gram (g)
  • 1 carat (uk) (ct) = 0.2592 gram (g)
  • 1 carat (metric) (ct) = 0.2 gram (g)
  • 1 cental = 45360 gram (g)
  • 1 clove = 3175 gram (g)
  • 1 dram (av) = 1.772 gram (g)
  • 1 dram (ap) = 3.888 gram (g)
  • 1 dram (tr) = 3.888 gram (g)
  • 1 grain = 0.0648 gram (g)
  • 1 Grain (ap) (gr) = 0.0648 gram (g)
  • 1 grain (tower) (gr) = 0.04556 gram (g)
  • 1 grain (tr) (gr) = 0.0648 gram (g)
  • 1 hundredweight (hwt) = 50800 gram (g)
  • 1 hundredweight (short) (hwt) = 45360 gram (g)
  • 1 mark (tower) = 233.3 gram (g)
  • 1 ounce (oz) = 28.35 gram (g)
  • 1 ounce (ap) (oz) = 31.1 gram (g)
  • 1 ounce (av) (oz) = 28.35 gram (g)
  • 1 ounce (Tower) (oz) = 29.16 gram (g)
  • 1 ounce (tr) (oz) = 31.1 gram (g)
  • 1 pennyweight (dwt) = 1.555 gram (g)
  • 1 pennyweight (tower) (dwt) = 1.458 gram (g)
  • 1 pound (ap) (lb) = 373.2 gram (g)
  • 1 pound (av) (lb) = 453.6 gram (g)
  • 1 pound (Tower) (lb) = 349.9 gram (g)
  • 1 pound (tr) = 373.2 gram (g)
  • 1 quarter (uk) = 12700 gram (g)
  • 1 quarter (us) = 11340 gram (g)
  • 1 sack = 165100 gram (g)
  • 1 scruple (ap) (s) = 1296 gram (g)
  • 1 slug = 14590 gram (g)
  • 1 stone (st) = 6350 gram (g)
  • 1 tod = 12700 gram (g)
  • 1 ton (t) = 1016000 gram (g)
  • 1 ton (us) (t) = 907200 gram (g)
  • 1 tonne = 1000000 gram (g)
Memory
  • 1 bit (b) = 0.125 byte (B)
  • 1 gigaByte (GB) = 1074000000 (B)
  • 1 kiloByte (kB) = 1024 byte (B)
  • 1 megaBit (Mb) = 131100 byte (B)
  • 1 megaByte (MB) = 1049000 byte (B)
  • 1 nibble (n) = 0.5 byte (B)
  • 1 petaByte (PB) = 1126000000000000 byte (B)
  • 1 terraByte (TB) = 1100000000000 byte (B)
Number
  • 1 brace = 2
  • 1 dozen (doz) = 12
  • 1 bakers dozen = 13
  • 1 score = 20
  • 1 gross = 144
  • 1 centuary = 100
  • 1 grand = 1000
  • 1 google = 10100
  • 1 googleplex = 1010100
  • 1 quire (paper) = 24 sheets
  • 1 ream (paper) = 500 sheets
  • 1 mole (chemistry) (mol) = 6.023 x 1023
Power
  • 1 horsepower (hp) = 745.6999 watt (W)
Pressure
  • 1 Inch of water (in.h2o) = 249.1 pascal (Pa)
  • 1 millimetre of mercury (mm Hg) = 133.3 pascal (Pa)
  • 1 bar = 100000 pascal (Pa)
  • 1 torr = 133.3 pascal (Pa)
  • 1 atmosphere (at) = 101300 pascal (Pa)
  • 1 kilogram force per square centimetre = 98070 pascal (Pa)
  • 1 pounds per square inch (psi) = 6895 pascal (Pa)
Radiation
  • 1 Rutherforrd (Ruth) = 0.000001 becquerel (Bq)
Salary (Wages)
Approximate figures, ignoring Tax etc. and assuming
8 hour day, 5 day week, 12 month year, 52 week year
  • £1 per hour = £8.00 per day
  • £1 per hour = £40.00 per week
  • £1 per hour = £173.33 per month
  • £1 per hour = £2080.00 per year
  • £1 per day = £0.125 per hour
  • £1 per day = £5.00 per week
  • £1 per day = £21.67 per month
  • £1 per day = £260.00 per year
  • £1 per week = £0.025 per hour
  • £1 per week = £0.20 per day
  • £1 per week = £4.33 per month
  • £1 per week = £52.00 per year
  • £1 per month = £0.00577 per hour
  • £1 per month = £0.04615 per day
  • £1 per month = £0.23077 per week
  • £1 per month = £12 per year
  • £1 per year = £0.00048 per hour
  • £1 per year = £0.00385 per day
  • £1 per year = £0.01923 per week
  • £1 per year = £0.08333 per month
Temperature
 CelciusFarenheitKelvin
Celcius°C( F - 32 ) ÷ 1.8K + 273.15
Farenheit( °C x 1.8 ) + 32F( ( K - 273.15 ) x 1.8 ) + 32
Kelvin°C + 273.15( ( F - 32 ) ÷ 1.8) + 273.15K
Centigrade (historic)100 - °C100 - ( ( F - 32 ) ÷ 1.8 )173.15 - K
Note Celcius temperature readings are often mislabelled as Centigrade
Freezer ***below -18below 0below 255
Freezer **below -12below 10below 261
Freezer *below -6below 21below 267
Fridgebelow 4below 39below 277
Gas mark
¼ (uk)
107225380
Gas mark
½ (uk)
121250394
Gas mark
1 (uk)
135275408
Gas mark
2 (uk)
148300421
Gas mark
3 (uk)
162325435
Gas mark
4 (uk)
176350449
Gas mark
5 (uk)
190375463
Gas mark
6 (uk)
204400477
Gas mark
7 (uk)
218425491
Gas mark
8 (uk)
232450505
Gas mark
9 (uk)
246475519
Gas mark
10 (uk)
260500533
 
Time
  • 1 centuary(average) (cent) = 3154000000 second (s)
  • 1 day (dy) = 86400 second (s)
  • 1 decade(average) (dec) = 315400000 second (s)
  • 1 fortnight (fn) = 1210000 second (s)
  • 1 hour (hr) = 3600 second (s)
  • 1 millennium(average) (mill) = 31540000000 second (s)
  • 1 Minute (min) = 60 second (s)
  • 1 month(average) (mo) = 2628000 second (s)
  • 1 week (wk) = 604800 second (s)
  • 1 year(average) (yr) = 31540000 second (s)
Velocity
  • 1 foot/second (ft/s) = 0.3048 meter/second (m s-1)
  • 1 kilometre/hour (kph) = 0.2778 meter/second (m s-1)
  • 1 Knot (nautical)(kn) = 0.5144 meter/second (m s-1)
  • 1 knot (uk)(kn) = 0.5148 meter/second (m s-1)
  • 1 light speed (c) = 299800000 meter/second (m s-1)
  • 1 mile/hour (mph) = 0.447 meter/second (m s-1)
  • 1 mach (sound-speed)(air) = 343 meter/second (m s-1)
Volume
  • 1 anker (brew) = 37.85 litre (L)
  • 1 bag = 0.1091 litre (L)
  • 1 barrel (uk) = 163.7 litre (L)
  • 1 barrel (brew) = 160.4 litre (L)
  • 1 barrel (oil) = 0.159 litre (L)
  • 1 Barrel (wine) = 0.1432 litre (L)
  • 1 barrel(wine) = 119.2 litre (L)
  • 1 bottle (brew) = 0.75 litre (L)
  • 1 bushel (uk) = 36.37 litre (L)
  • 1 butt = 491 litre (L)
  • 1 butt (126) = 0.5728 litre (L)
  • 1 butt (brew) = 481.2 litre (L)
  • 1 chalfton (uk) = 1.309 litre (L)
  • 1 coomb (dry) = 145.5 litre (L)
  • 1 cran = 170.5 litre (L)
  • 1 cubic centimetre = 0.000001 litre (L)
  • 1 cubic foot = 2.832 litre (L)
  • 1 cubic inch = 0.01639 litre (L)
  • 1 cubic yard = 764.6 litre (L)
  • 1 cup (uk) = 0.0002841 litre (L)
  • 1 drachm = 0.0004262 litre (L)
  • 1 drop (ap) = 0.0000059 litre (L)
  • 1 firkin = 40.91 litre (L)
  • 1 firkin (brew) = 40.1 litre (L)
  • 1 fluid drachms = 0.000003552 litre (L)
  • 1 fluid ounce (fl.oz) = 0.02841 litre (L)
  • 1 fluid scruple = 0.001515 litre (L)
  • 1 gallon (uk) (g) = 4.546 litre (L)
  • 1 gallon (us) = 3.788 litre (L)
  • 1 gill = 0.1421 litre (L)
  • 1 gill (uk) = 0.0001421 litre (L)
  • 1 gill (uk) = 0.1421 litre (L)
  • 1 hogshead = 245.5 litre (L)
  • 1 hogshead (brew) = 240.6 litre (L)
  • 1 hogshead (uk) = 245.5 litre (L)
  • 1 kenning = 18.18 litre (L)
  • 1 kenning (dry) = 18.18 litre (L)
  • 1 kilderkin = 81.83 litre (L)
  • 1 magnum (brew) = 1.5 litre (L)
  • 1 methuslah (brew) = 6 litre (L)
  • 1 minim (ap) = 0.000005919 litre (L)
  • 1 minim (us) = 0.000006161 litre (L)
  • 1 peck (us) = 8.81 litre (L)
  • 1 peck (dry) = 9.092 litre (L)
  • 1 pin = 20.46 litre (L)
  • 1 pint (pt) = 0.5683 litre (L)
  • 1 pint (uk) = 0.5683 litre (L)
  • 1 pint (us) = 0.4736 litre (L)
  • 1 pipe (wine) = 477 litre (L)
  • 1 pottle (liquid) = 1.893 litre (L)
  • 1 pottle (dry) = 2.273 litre (L)
  • 1 quart (us) = 0.9464 litre (L)
  • 1 quart (uk) = 1.137 litre (L)
  • 1 rundlet(wine) = 68.14 litre (L)
  • 1 stere = 1000 litre (L)
  • 1 strike = 72.74 litre (L)
  • 1 tablespoon (uk) = 0.00001776 litre (L)
  • 1 teaspon (uk) = 0.000005919 litre (L)
  • 1 tierce (wine) = 159 litre (L)
  • 1 tun (wine) = 953.9 litre (L)
SI Prefix
PrefixAbbrMeaning
quettaQ x 1030
ronnaR x 1027
yottaY x 1024
zettaZ x 1021
exa E x 1018
peta P x 1015
tera T x 1012
giga G x 109
mega M x 106
myriamyx 10000x 104
kilo kx 1000x 103
hectohx 100x 102
deca dax 10x 101
  1x 100
deci dx 0.1x 10-1
centicx 0.01x 10-2
millimx 0.001x 10-3
microµ x 10-6
nano n x 10-9
pico p x 10-12
femtof x 10-15
atto a x 10-18
zeptoz x 10-21
yoctoy x 10-24
rontor x 10-27
quectoq x 10-30
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