One issue I have with writing recipes is that I am an American living and cooking in Japan. I have various recipes and depending on the source, measurements are sometimes given as weight or volume and may be in metric or imperial measurements. I am attempting to write recipes that will be easy to follow for my friends and family in America (that is, mostly volumetric measurements using the imperial system) and also understandable to my non-American friends. However, due to some issues in scaling recipes or conversions that lead to inconvenient fractions (3/5 ounces and so on), some measurements in my recipes may remain in grams or mL. There are some handy conversion calculators online; here are some conversion factors that you may find useful.
1 U.S. cup = 8 ounces (vol.) = 16 tablespoons = 48 teaspoons = 237 mL
1 Japanese cup = 200 mL = approx 0.8 x 1 U.S. cup
1 tablespoon = 3 teaspoons = 1/2 ounce (vol.)
1 tablespoon = 1 大さじ = 15 mL
1 teaspoon = 1 小さじ = 5 mL
1 inch = 2.54 cm = 25.4 mm; 1/2 inch = approx 13 mm; 1/4 inch = approx 6 mm
1 cm = approx. 1/2 inch; 1/2 cm = approx 1/4 inch
rice: 1 cup = 180 grams; 1 rice-cooker cup = 150 grams
butter: 1 stick (US) = 1/4 lb = 4 ounces = 8 tablespoons = 1/2 cup = 113.4 grams; 1 stick (Japan) = 200 grams = 7.1 ounces
