Last updated: April 2026 · Reviewed by Calculatormatics Editorial Team

Cooking Converter — Cups to Grams, mL to oz

Two tools in one: convert between cooking volume units (cups, tablespoons, teaspoons, mL, oz), and convert volume measurements to grams for common baking ingredients.

Why Baking Requires Grams

Volume measurements are accurate for liquids but unreliable for dry ingredients. The problem is compaction: flour scooped directly from the bag can weigh 30% more than flour spooned gently into the same cup. This difference is enough to make cookies spread flat or bread fail to rise.

Professional bakers always work in weight. A recipe specifying 250g of flour delivers the same result every time, regardless of who measures it, in what climate, with what brand of flour, or whether the bag was just opened or has been sitting open for a week. You can convert between grams, ounces, and pounds using our Weight Converter.

Common Ingredient Weights

Volume Unit Conversion Reference

Volume vs. Weight in Everyday Cooking

For savory cooking and most stovetop recipes, volume measurements are fine. Adding a teaspoon of salt or a cup of broth to a stew is not precision chemistry — variations of 10–20% are accommodated by taste adjustments at the end. Cooking is forgiving.

Baking is not forgiving. The chemistry of leavening (the interaction of baking powder, acid, and heat to produce CO2 bubbles that make baked goods rise) depends on correct ratios. Too much or too little flour relative to liquid determines whether a cookie is chewy or crispy, whether bread has an open crumb or a dense brick, whether a cake rises or collapses.

The three scenarios where switching to grams matters most:

• Bread baking: Hydration ratios (water to flour by weight) are fundamental to bread texture. A 75% hydration dough behaves completely differently from a 65% hydration dough.
• Pastry and croissants: Laminated doughs require precise butter-to-flour ratios. A few grams difference affects layer separation.
• Macarons and meringues: The ratio of almond flour to powdered sugar to egg white weight determines whether macarons have feet (the characteristic frilly base) or deflate into cookies.

If you are tracking nutritional intake alongside your cooking, our Calorie Calculator estimates daily calorie needs based on your weight and activity level.

How to Use a Kitchen Scale

Place your bowl on the scale and press "Tare" (or "Zero") to reset to zero with the bowl's weight excluded. Add each ingredient directly to the bowl, pressing Tare between each ingredient so you are always weighing just the new addition. This method — called sequential taring — requires only one bowl, one scale, and no measuring cups at all for most baking recipes.

Worked Example: Convert 2 Cups of All-Purpose Flour to Grams

Ingredient density matters because volume-to-weight conversions depend on what you are measuring. 1 US cup of all-purpose flour weighs approximately 125 g (spooned and leveled).

Step 1: Find the ingredient density
  All-purpose flour = 125 g per US cup

Step 2: Multiply by the volume
  2 cups × 125 g/cup = 250 g

Step 3: Why not just use mL?
  2 cups ≈ 473 mL, but that is the VOLUME — not weight.
  Flour is less dense than water, so 473 mL weighs ~250 g, not 473 g.

So 2 cups of flour ≈ 250 g. For baking, weighing ingredients in grams is more accurate than measuring by volume because flour can pack differently depending on how it was scooped.

Frequently Asked Questions