In the Czech Republic and across most European countries, cooking ingredients are weighed on a kitchen scale. We use metric units, most often grams for mass and milliliters for basic liquids.
My recipes on this blog are based on the originals written in metric units. To adapt to the U.S. measuring system, I use the following conversions according to FDA guidance:
- 1 US legal cup = 240 ml
- 1 Tbsp = 15 ml
- 1 tsp = 5 ml
- 1 fluid ounce = 30 ml
- 1 oz = 28 g
- 1 lb (pound) = 454 g

Below you will find the most commonly used ingredients converted from U.S. units to the metric system. I weighed each ingredient on my kitchen scale to make sure the conversions listed in the recipes are correct.
Flour
All-purpose flour; in Czech: "hladká mouka." When measured, please prefer the Spoon & level method. Do not scoop the flour, especially if baking.
- 1 cup = 130 g
- ½ cup = 65 g
- ⅓ cup = 44 g
- ¼ cup = 33 g
Sugar white – granulated
In Czech: "bílý cukr" or "cukr krupice"
- 1 cup = 200 g
- ½ cup = 100 g
- ⅓ cup = 67 g
- ¼ cup = 50 g
Sugar powdered
In Czech: "práškový cukr" or "moučkový cukr"
- 1 cup = 120 g
- ½ cup = 60 g
- ⅓ cup = 40 g
- ¼ cup = 30 g
Oil vegetable
In Czech: "rostlinný olej"
- 1 cup = 220 g = 240 ml
- ½ cup = 110 g = 120 ml
- ¼ cup = 55 g = 60 ml
Butter
In Czech: "máslo"
- 1 stick = ½ cup = 8 Tbsp = 4 oz = 113 g
- 2 sticks = 1 cup = 16 Tbsp = 8 oz = 226 g
Liquids
For example: water, milk, broth
- 1 cup = 240 ml = 8 fl oz
- ½ cup = 120 ml = 4 fl oz
- ¼ cup = 60 ml = 2 fl oz
Sour cream
In Czech: "zakysaná smetana"
- 1 cup = 240 g
- ½ cup = 120 g
- ⅓ cup = 80 g
- ¼ cup = 60 g
Breadcrumbs
In Czech: "strouhanka"
- 1 cup = 120 g
- ½ cup = 60 g
- ⅓ cup = 40 g
- ¼ cup = 30 g
Rice dry
In Czech: "rýže"
- 1 cup = 190 g
- ½ cup = 95 g
- ⅓ cup = 63 g
- ¼ cup = 48 g
Poppy seed raw
In Czech: "mák"
- 1 cup = 145 g
- ½ cup = 72,5 g
- ⅓ cup = 48 g
- ¼ cup = 36 g
Poppy seed ground
In Czech: "mletý mák"
- 1 cup = 90 g
- ½ cup = 45 g
- ⅓ cup = 30 g
- ¼ cup = 23 g
Jam
Marmelade, powidl and other preserves. In Czech: "marmeláda" or "džem"
- 1 cup = 330 g
- ½ cup = 165 g
- ⅓ cup = 110 g
- ¼ cup = 82,5 g
Buttermilk
In Czech: "kefír" or "acidofilní mléko"
- 1 cup = 225 g = 240 ml
- ½ cup = 112,5 g = 120 ml
Mayonnaise
In Czech: "majonéza" or "majolka"
- 1 cup = 220 g
- ½ cup = 110 g
- ⅓ cup = 73 g
- ¼ cup = 55 g
Dark cocoa powder
In Czech "kakao"
- 1 Tbsp = 7,5 g
- 1 tsp = 2,5 g
Greek yogurt
In Czech "řecký jogurt", fat content around 10 %
- 1 cup = 280 g
- ½ cup = 140 g
- ⅓ cup = 93 g
- ¼ cup = 70 g
Baking powder
In Czech "kypřicí prášek"
- 1 tsp = 4 g
- 1 Tbps = 13 g
Dried lentils
In Czech "čočka"
- 1 cup = 200 g
- ½ cup = 100 g
- ⅓ cup = 67 g
- ¼ cup = 50 g
Ellen Myftari
Hello Petra ~
I want to THANK YOU for providing the above Metric/US Std measurements - so concise and thorough! I love to explore ethnic cooking and trying to figure out the above differences in recipes was a nightmare (I made so many mistakes!). I'm looking forward to trying your various creations .... Best Wishes ~ Ellen
Petra Kupská
Hello Ellen, Thank you for your kind comment! I come from the Czech Republic, where we measure our cooking ingredients with a scale and use the metric system. When I started cooking for a US audience, I had to prepare a conversion for each ingredient used. If you need any advice on a Czech recipe, I'd be happy to help! 🙂 With warm greetings from Bohemia, Petra
Alena
I just came across conversions of US and metric measurements - that’s fantastic ! Thank you! That’s very helpful - you are great - love all of your recipes and also love that it’s very easy to navigate through your web site - fantastic job ! Your son is great translator Thank you !