Weights & Measures
Spoons - In America and Sweden these are the same.
Swedish   American      
1 msk = 15 ml. 1 tbls. = 15 ml.    
1 tsk = 5 ml. 1 teas. = 5 ml.    
1 krm = 1 ml. no equivalent      

Weights

American
There are 16 dry
ounces in one pound

European
Exact amounts

1/2 ounce 14gr.
3/4 ounce 20gr.
1 ounce 28gr.
1 1/2 ounce 42gr.
2 ounce 56gr.
3 ounce 84gr.
4 ounce 112gr.
4 1/2 ounce 126gr.
5 ounce 140gr.
6 ounce 168gr.
7 ounce 196gr.
8 ounce 224gr.
9 ounce 252gr.
10 ounce 280gr.
12 ounce 336gr
1 pound 448gr.
1 1/2 pound 672gr.
2 pounds 896gr.
3 pounds 1.34 kilo

Liquids

American
There are 32 liquid ounces in a quart.

European
Rounded up to closest ml unless marked exact.

1/2 ounce
15 ml.
3/4 ounce
25 ml.
1 ounce
29.56 ml. exact
1 1/2 ounce
44 ml.
2 ounce
60 ml.
3 ounce
90 ml.
4 ounce = 1/2 cup
or 1/4 pint
120 ml.
4 1/2 ounce
135 ml.
5 ounce
148 ml.
6 ounce
177 ml.
7 ounce
207 ml.
8 ounce = 1 cup or 1/2 pint
236 ml.
10 ounce
295 ml.
12 ounce
354 ml.

16 ounce = 2 cups or 1 pint

472 ml. exact
1 quart = 4 cups or
2 pints or 32 ounces
946 ml. exact
1 1/2 quarts = 6 cups or
3 pints or 48 oz.
1.42 ml. exact
2 quarts = 8 cups or
4 pints or 64 ounces
1.89 liters exact
3 quarts = 12 cups or
6 pints or 96 ounces
2.84 liters exact

Measurements, Inches to Centimeters rounded off to the closest millimeter.

1/8 inch = 3 mm 4 inches = 10 cm
1/4 inch = 5 mm. 5 inches = 13 cm
1/2 inch = 1 cm. 6 inches = 15 cm.
1/3 inch = 2 cm. 6 1/2 inches = 16 cm.
1 inch = 2.5 cm. 7 inches = 18 cm.
1 1/4 inch = 3 cm. 7 1/2 inch = 19 cm.
1 1/2 inch = 4 cm. 8 inch = 20 cm
1 3/4 inch = 4.5 cm. 9 inch = 23 cm.
2 inches 5 cm. 10 inch = 25.5 cm.
2 1/2 inch = 6 cm. 11 inch = 28 cm.
3 inches = 7.5 cm. 12 inch = 30 cm.
3 1/2 inch = 9 cm.    

General rules about recipes.

1. Always work with one set of measurements, don't mix them up, use kilo or pounds but not both.

2. I think it is worth it to buy measuring spoons and cups that show both systems of measurement to make life easier until the Americans go, (if ever) over to the metric system.

3. Most recipes will double but as you increase the number of times you double the recipe flavors can come unbalanced.

4. Baking recipes can be cut in half usually. But if you want to double them it's safer to just make 2 batches of whatever it is, except I find cookie recipes usually double quite well.

5. Try and have the right size pie tins when baking. If your pie tin is 1 cm larger than what the recipe asks for it will affect the time you are required to bake it. It does make a difference especially when baking cakes.

6. There is another set of measurements not covered here and that is British Imperial which is not used much today in modern British cook books but it is in older ones. Perhaps one day I will take the time and get them up as well.