Conversions

• 1 BThU (British Thermal Unit) = 252 calories
• 1 therm = 100,000 BThU or 25,200 kilocalories
• Gas consumption e.g. therms or calories
• Gas in volume = cu m or cu ft (1 cu m = app 35 cu ft)
• Electricity in Watts (W) or a multiple
• Electricity consumption in kilowatt hours (kWh) or a
• Multiple. 1 kWh = 1 kW or 1,000 Watts used for 1 hour
• 29.3 kWh = 1 therm
• 1 tonne of petroleum = 1.7 tonnes of coal
• 6.6 to 7.9 barrels of oil to 1 tonne (average 7.33 barrels)
• 1 ton = 2,240 lb = 1,016 kilograms
• 1 metric tonne = 1,000 kg or app 2,205 lb

Money Conversion
(Value of £1 in Year - Value Today  2011RPI)

• 1264 - £532 
• 1275 - £506
• 1300 - £400
• 1320 - £335
• 1380 - £450
• 1390 - £483
• 1400 - £447
• 1440 - £469
• 1470 - £500
• 1480 - £505
• 1510 - £423   
• 1520 - £380
• 1540 - £307
• 1550 - £200
• 1560 - £170
• 1580 - £150
• 1600 - £100
• 1610 - £98
• 1640 - £85
• 1660 - £77
• 1670 - £83
• 1700 - £78
• 1720 - £85
• 1750 - £85
• 1760 - £75
• 1770 - £64
• 1790 - £56
• 1800 - £32
• 1820 - £42
• 1830 - £49.50
• 1850 - £58.50
• 1870 - £46
• 1880 - £48
• 1890 - £60
• 1900 - £57
• 1910 - £57
• 1915 - £43
• 1920 - £21
• 1925 - £30
• 1930 - £33
• 1935 - £33.50
• 1940 - £29
• 1945 - £26
• 1950 - £22.75
• 1955 - £17.45
• 1960 - £15.30
• 1965 - £12.85
• 1970 - £11.00
• 1975 - £6.10
• 1980 - £3.10
• 1985 - £2.10
• 1990 - £1.50
• 1995 - £1.30
• 2000 - £1.20
• 2005 - £1.12
• 2006 - £1.08
• 2007 - £1.04
• 2008 - £1.00
• 2010 - £1.00