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Conversion Charts

1 US gallon is equal to:
4 quarts	128 ounces	768 tsp
8 pints	3.785 liters	8.34 lbs
16 cups	256 tbsp	231 cu. in.

1 cup is equal to:
8 ounces	48 tsp	0.23 liter
1/2 pint	236 ml	14.4 cu.in.
16 tbsp	0.52 lbs	236 grams

1 tablespoon is equal to:
1/2 ounce	3 tsp	15 grams
15 ml	180 drops	o.663 cup

1 liter is equal to:
1000 ml	4.328 cups	202.88 tsp
2.164 pints	67.63 tbsp	0.264 gal
1000 grams	2.22 lbs	1.057 quarts

Measurement equivalents
3 tsp = 1 Tbsp	1 ml = 1/5 tsp
2 Tbsp = 1 l uid oz	5 ml = 1 tsp
16 Tbsp = 1 cup	15 ml = 1 Tbsp
2 cups = 1 pint (16 oz)	30 ml = 1 l uid oz
2 pints = 1 quart (32 oz)	240 ml = 1 cup
4 quarts = 1 gal (128 oz)	3840 ml = 1 gal

°F/°C TEMPERATURE CONVERSION
200°C = 392°F	100°C = 212°F	75°C = 167°F	40°C = 104°F
150°C = 302°F	95°C = 203°F	70°C = 158°F	30°C = 86°F
125°C = 257°F	90°C = 194°F	65°C = 149°F	20°C = 68°F
110°C = 230°F	85°C = 185°F	60°C = 140°F	10°C = 50°F
105°C = 221°F	80°C = 176°F	50°C = 122°F	0°C = 32°F

°F/°C TEMPERATURE FORMULA
°C = (°F - 32) x 5/9	°F = (°C x 9/5) + 32

Lighting Conversion
1 footcandle = lumen/ft²

Definitions & Abbreviations
ppm = parts per million
mho = conductivity
mS = millisiemen
uS = microsiemen
tds = total dissolved solids
ec = electrical conductivity
pH = potential hydrogen

Definitions & Abbreviations
C Carbon	Mn Mangenese
Ca Calcium	Mo Molybdenum
Cl Chlorine	N Nitrogen
Cu Copper	Na Sodium
Fe Iron	O Oxygen
F Fluorine	P Phosphorus
H Hydrogen	S Sulfur
K Potassium	Zn Zinc

1 Siemen = 1000 mS

1 mS = 1000 uS

1 mS = 500 ppm (standard)

1 mS = 650 ppm (horticultural)

1 mg/liter = 1 ppm