To convert cooking measurements: 1 cup = 16 tablespoons = 48 teaspoons = 8 fluid ounces = 236.6 milliliters. 3 teaspoons = 1 tablespoon. 1 tablespoon = 3 teaspoons = 15 ml. Converting grams to cups depends on the ingredient — 1 cup of flour ≈ 120g, but 1 cup of sugar ≈ 200g, and 1 cup of water = 237g. Volume and weight are related only through the ingredient's density.
Cooking measurement conversions are needed constantly: scaling a recipe up or down, cooking from an international recipe (metric vs. US customary), measuring by weight for precision baking, or working with non-standard amounts. Baking requires more precision than cooking — a 10% error in flour can dramatically affect the outcome.
Use the free Cooking Measurement Converter at RoughTools to convert between any cooking units for volume, weight, and specific ingredients.
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US Cooking Volume Measurements
| Unit | Equivalent | |------|-----------| | 1 teaspoon (tsp) | 5 ml | | 1 tablespoon (tbsp) | 3 tsp = 15 ml | | 1 fluid ounce (fl oz) | 2 tbsp = 30 ml | | 1/4 cup | 4 tbsp = 60 ml | | 1/3 cup | ~5.3 tbsp = 79 ml | | 1/2 cup | 8 tbsp = 118 ml | | 1 cup | 16 tbsp = 48 tsp = 237 ml | | 1 pint | 2 cups = 473 ml | | 1 quart | 4 cups = 946 ml | | 1 gallon | 16 cups = 3,785 ml |
Grams to Cups: Ingredient-Specific Conversions
Because density varies, 1 cup of different ingredients weighs different amounts:
| Ingredient | 1 Cup (grams) | 1 Tbsp (grams) | |-----------|------------|--------------| | All-purpose flour | 120g | 7.5g | | Bread flour | 130g | 8.1g | | Cake flour | 100g | 6.25g | | Whole wheat flour | 113g | 7g | | White granulated sugar | 200g | 12.5g | | Brown sugar (packed) | 220g | 13.75g | | Powdered/confectioner's sugar | 120g | 7.5g | | Butter (softened) | 227g | 14.2g | | Butter (melted) | 224g | 14g | | Honey | 340g | 21g | | Cocoa powder | 85g | 5.3g | | Rice (uncooked) | 185g | 11.6g | | Oats | 90g | 5.6g | | Water / milk | 237g / 244g | 14.8g / 15.3g | | Olive oil | 216g | 13.5g | | Salt | 288g | 18g |
Why Weighing Is More Accurate Than Volume
Volume measurements of dry ingredients can vary by 20–30% depending on how the ingredient is measured. A cup of flour can weigh anywhere from 100g to 160g depending on whether it's sifted, spooned loosely, or packed:
- Sifted flour (lightest): ~95–100g per cup
- Spooned into cup: ~120g per cup (standard)
- Scooped and leveled: ~140–150g per cup
- Packed: ~165g per cup
Professional bakers and most international recipes use weight (grams) rather than volume precisely because of this variation. If your bread isn't rising correctly or your cookies are spreading too much, incorrect flour measurement is often the cause.
Scaling Recipes
To scale a recipe up or down, multiply every ingredient by the scaling factor:
Scaling Factor = Desired Servings / Original Servings
Scaled Amount = Original Amount × Scaling Factor
Scaling a 12-serving cookie recipe down to 4 servings:
- Scaling factor = 4/12 = 0.333
- 3 cups flour × 0.333 = 1 cup flour
- 2 eggs × 0.333 = 0.667 eggs (use 2/3 egg — beat 1 egg, use 2/3 of it, or substitute with 1 yolk)
- 1 tsp baking soda × 0.333 = 1/3 tsp
Scaling challenges:
- Eggs don't divide easily — see egg substitution methods
- Leavening (baking powder, baking soda) doesn't scale linearly for very large batches
- Pan size changes affect baking time and temperature
- Some spices and seasonings shouldn't scale proportionally in large batches
Frequently Asked Questions
How many teaspoons are in a tablespoon? 3 teaspoons = 1 tablespoon (US). This is one of the most commonly needed conversions: a recipe calling for 3 tsp of vanilla can be measured as 1 tbsp. A recipe calling for 1/2 tablespoon = 1.5 teaspoons. Important: UK tablespoons are slightly different (15 ml standard, but some sources cite UK tablespoon as 14.2 ml or Australian tablespoon as 20 ml). US and UK teaspoons are both 5 ml — identical.
Is 1 fluid ounce the same as 1 ounce by weight? No — these are completely different units. A fluid ounce (fl oz) is a volume measure: 1 fl oz = 30 ml = 2 tablespoons. An ounce (oz) is a weight/mass measure: 1 oz = 28.35 grams. Water happens to be close (1 fl oz of water ≈ 1.04 oz by weight), but most other substances differ significantly. 1 fl oz of honey weighs approximately 1.5 oz by weight (honey is denser than water). Always check whether a recipe means fl oz or oz by weight.
What does "metric cup" mean? In Australia, New Zealand, and Canada, the metric cup = 250 ml (versus 236.6 ml for US cup). The difference (13.4 ml) is small for most recipes but noticeable in precision baking. Australian tablespoon = 20 ml (vs. 15 ml US). UK tablespoon = 15 ml (same as US). When using international recipes, check the source country's measurement standards. Most modern Australian and Canadian recipes use metric grams and milliliters rather than cups.
How do I convert a recipe from grams to cups? Divide the grams by the weight per cup for that specific ingredient. 300g flour: 300 ÷ 120 = 2.5 cups. 150g butter: 150 ÷ 227 = 0.66 cups ≈ 2/3 cup. The free RoughTools cooking converter includes gram-to-cup conversion for 50+ common baking ingredients with ingredient-specific density values.
What is the difference between dry measuring cups and liquid measuring cups? Dry measuring cups are designed to be filled to the brim and leveled off. They come in exact sizes (1/4 cup, 1/3 cup, 1/2 cup, 1 cup). Liquid measuring cups have graduated markings, a pour spout, and are read at eye level with the cup on a flat surface. Using a liquid measuring cup for dry ingredients (or vice versa) introduces inaccuracy. Dry measuring cups used for liquids won't fill to the exact measurement line because you can't level a liquid.
Related Free Tools on RoughTools
- Unit Converter — convert all measurement types
- Volume Calculator — calculate volumes for containers and shapes
- Weight Converter — convert between grams, ounces, pounds, kilograms
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The free Cooking Measurement Converter at RoughTools converts between cups, tablespoons, teaspoons, fluid ounces, milliliters, grams, and ounces for 50+ common ingredients. Scale any recipe up or down. No account needed, completely free.