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Weight resizer for recipes


Calculator Use

To use this tool, for example to resize a recipe, just choose if you want to scale up or down, the quantity of the original unit in your recipe.

This tool accepts decimal, integer, fractional values and mixed numbers as input, so you can type values like: 1, 4, 0.5, 1.9, 1/2, 3 1/2, etc.

The fractions / integers show as results may be an exact value or have an approximation error according to the table below:

Exact 1% 2% 5%10%15%

If the fraction error does not fit your needs, you should use the decimal value and possibly increase the number of significant figures.


Choose 'divide' to scale down or 'multiply' to scale up.


How to input values

Choose values from the list or type specific values in the text box. For example.: 1, 2.5, 1/2, 3/4, 1 1/2, etc.


Choose the original unit you want to divide or scale down or multiply or scale up its value.


Approximation error for fractions / whole numbers

Exact 1% 2% 5%10%15%

A list of abbreviations is at the bottom of this page.


Calculator Use

To use this tool, for example, to adjust the size of a recipe, simply select whether you want to increase or decrease the amount of the original unit in your recipe.

This calculator was designed to help you convert weight units for use in recipes, so some of the results, particularly fractions, may be approximate and have a small error, which is color-coded to give you more confidence when using the results.

Exact 1% 2% 5%10%15%

What this calculator is for?

This calculator has been written with the difficulty that people who work with cooking recipes have in mind when converting non-metric units of weight (the English or the American system).

For example, suppose we have a particular recipe designed for 3 people where one of the measurements is half a 1/3 cup. If we want to resize this recipe to serve 1 person, how much will the new amount be in tablespoons or even teaspoons?

The simple answer is 1/3 divided by 3 = 1/9 cup or 0.1111 cups. Note that this measurement is too small to measure in cups. It would be better to change the unit to tablespoons or even teaspoons. So, after a bit of maths, we would get the value of 5 tablespoons plus one teaspoon (5 tbsp + 1 tsp). However, with our weight resizer, you would get this answer in seconds and feel much more confident about the results you get.

How to scale up and scale down a recipe

Increasing or decreasing a recipe means adjusting the ingredients and measurements in a recipe to increase or decrease the number of servings. This can be useful if you wish to feed more or fewer people than the recipe originally intended. Here are the steps you can take to increase or decrease a recipe:

Weight units symbols or abbreviations

Here are all the abbreviations used in this weight resizer.



Despite efforts to provide accurate information on this website, no guarantee of its accuracy is made. Therefore, the content should not be used for decisions regarding health, finances, or property.