Baking Conversion Calculator

Baking conversion calculator for cups to grams, tablespoons, teaspoons, ounces, and milliliters

This baking conversion calculator is built for one practical job: converting recipe measurements into the units you actually want to use while baking. Most home bakers run into the same friction point. A recipe lists cups and tablespoons, but you prefer weighing ingredients in grams or ounces for consistency. Or a recipe is metric, but your measuring tools are in cups and spoons. This page converts common baking units in one place, using standard unit relationships for volume to volume and weight to weight conversions.

The tricky part in baking is volume to weight. A cup of water is not the same weight as a cup of flour, and flour can vary based on how it is scooped and packed. This calculator solves that problem by letting you select an ingredient when you need to convert between volume units (cups, tablespoons, teaspoons, milliliters) and weight units (grams, kilograms, ounces, pounds). For the ingredient conversion, it uses a typical grams per cup reference for common ingredients, then converts through milliliters and grams internally so the math stays consistent.

How to use it is straightforward. Enter your amount, choose the unit you are converting from, and choose the unit you want to convert to. If both units are in the same type (both volume, or both weight), the ingredient is not needed and the result is a clean unit conversion. If you convert from volume to weight or from weight to volume, pick an ingredient so the calculator can apply a realistic density. If your recipe source lists a specific weight per cup, open the Advanced section and enter a custom grams per cup value. That overrides the typical value and makes your conversion match the recipe more closely.

Assumptions and how to use this calculator

• Unit conversions for volume to volume and weight to weight are exact relationships (for example, ounces to grams) and do not depend on ingredient choice.
• Volume to weight conversions depend on the ingredient, using typical grams per cup reference values that reflect common kitchen assumptions.
• For best accuracy, use the Advanced custom grams per cup field when your recipe provides a specific reference, or when you consistently measure flour using a known method.
• This tool assumes standard US cup and spoon sizes (cup, tablespoon, teaspoon) and converts through milliliters internally for consistent results.
• Results are rounded for readability. For baking where small differences matter, prefer weighing in grams and consider rounding up or down based on the precision your scale supports.

Common questions

Why do I need to choose an ingredient for cups to grams?

Cups are a volume unit and grams are a weight unit. Converting between them requires an ingredient density assumption. A cup of flour weighs very differently from a cup of sugar, and both differ from liquids like milk or honey. If you are converting volume to weight (or the other way around), the calculator needs an ingredient to use a realistic grams per cup value.

What if my recipe uses a different cup size?

This calculator assumes a standard US cup and standard spoon sizes. If your recipe uses a different standard, your best move is to rely on weights if the recipe provides them. If the recipe gives a grams per cup reference, enter that value in the Advanced section to align the conversion to the recipe, regardless of cup standard.

Why do flour conversions vary so much across sources?

Flour is easily compressed and its weight per cup changes with measuring method. Scooping directly from the bag and packing the cup yields a heavier cup than spooning flour into the cup and leveling it. Different flour brands and humidity also shift the weight slightly. If you want consistent results, weigh flour in grams and use the Advanced field if your recipe source uses a specific grams per cup assumption.

Can I use this for any ingredient not listed?

Not reliably for volume to weight conversions. For volume to volume and weight to weight conversions, ingredient choice does not matter. But for cross conversions, you need a valid grams per cup value. If you know the correct grams per cup for your ingredient, pick any ingredient and overwrite the grams per cup in Advanced with your value. That effectively makes the calculator work for your custom ingredient.

When should I avoid converting and just follow the recipe as written?

If the recipe is sensitive, such as pastry, macarons, bread hydration, or anything with tight ratios, conversions can introduce small errors if the density assumption differs from the recipe author’s. In those cases, use the weights provided by the recipe if available. If only volume is provided, choose a consistent measuring method or use a trusted grams per cup reference from the same recipe source and enter it as a custom value.