The charts below work great for figuring out how to turn what you have into something you need. Example: You want to catalyze one gallon of polyester resin. The label on the resin can says you should catalyze the resin at 2.5% by volume. How much is 2.5% of one gallon? Making things worse; your catalyst measuring container is calidrated in Cc’s. So; how many Cc’s does it take to catalyze one gallon of resin @ 2.5% by volume? 
 
FORMULA:  1Gal.=3,785CC’s x 2.5% BY VOLUME:  Answer is: 94.63CC’s
To Convert                          Into                              Multiply By   
      
Cc’s                                        Cu. In.                                 .061         
Cc’s                                        Fl. Oz.                                 .0338          
Cc’s                                        Gallons                              0.0002643          
Millimeters                             Inches                                0.03937          
Inches                                    Millimeters                       25.40         
Inches                                    Centimeters                       2.54          
Cu. In.                                    CC’s                                 16.39         
Cu. In.                                    Fl. Oz.                                 .554          
Cu. In.                                    Cu. Ft.                               0.0005787          
Cu. Ft.                                    Cu. In.                          1728          
Gallons                                  Cc’s                              3785  
Gallons                                  ml                                 3785         
Fl. Oz.                                    ml                                    29.57         
Fl. Oz.                                   Cu. In.                                1.805          
Grams                                   Ounces                                .03527         
Ounces                                 Grams                               28.349527         
Lbs.                                       Kilograms                          2.205         
Kilograms                              Lbs.                                   0.4536
 
What does my measurement equal? 
 
One gallon of water (H20) = 231 cu. In. = 128 fl. oz. = 3785 cc’s or grams = 3.785 liters.  One Gallon of H2O (Water) = 8.3453 lbs. 
 
Polywood (Our primary lure body material) One Gallon = 4.40 lbs. Therefor; it floats on water 50.5% submerged. Floatation can be increased with the addition Micro-Balloons. Reference: Fillers 
 
1 Cup = 236 cc’s 
1 Pt. = 28.87 cu. In. = 16 fl. oz. = 473.12 cc 
1 Qt. = 57.74 cu. In. = 32 fl. oz. = 945.5 cc = 4 cups = 2 Pints 
1 liter = 1000 cc’s = 1.0566 Qt. = .264 gal 
1 gram = 1 ml = 1 cc @ 1.0 specific gravity 
1 fl. oz. = 1.805 cu. In. = 29.57 cc 
1 cu. In. = .554 fl. oz. = 16.39 ml  
 
1 millimeter = 0.03937” 
1 centimeter = .3937” 
1 meter = 39.37” 
1 kilometer = 3,281 ft. = .62 mile 
1 milligram = .001 grams 
1 centigram = .01 grams 
1 gram = 0.03527 ozs. 
1 kilogram = 1000 gms = 2.205 lbs. = 35.28 oz 
1 3lb Catfish = 1.7lbs of meat          
The volume of a tube, cylinder, or bead.   
Area of Circle = p r² 
Volume of Cylinder = p r² h  
p = 3.1416        Volume of a bead = 1/2 the volume of the same length cylinder  
V = ½ p r²L  
Where L = length of bead 
R = radius