Cook well. Choose better.The useful edit of what to cook, keep in the kitchen and try next.
Search
The kitchen toolkit · Free, no account needed
Ingredient quantity multiplier
Multiply measured quantities by a factor, keeping their original units. Supports decimals and fractions without converting units or changing cooking instructions.
Your quantities. Your original units.
Scale the numbers, not the method
Or ½ tablespoon × 2 = 1 tablespoon, using the same measuring spoon. No ingredient or cooking assumptions are added.
US cups, metric cups and Imperial cups remain distinct labels. Spoon sizes can differ too: retain the original measure. There are no automatic conversions.
How to multiply ingredient quantities
Enter a multiplier and up to eight measured quantities. Each result is the original number multiplied by that factor, with its unit left unchanged.
New quantity = entered quantity × multiplier
For example, 250 g × 1.5 = 375 g. A quantity of ½ tablespoon multiplied by 2 becomes 1 tablespoon, using the same spoon measure. To find a factor from two group counts, divide the target by the original: 6 ÷ 4 = 1.5. That arithmetic does not establish suitable servings or validate a recipe.
Fractions stay honest
Enter a decimal such as 0.5, a fraction such as 1/2 or a mixed number such as 1 1/2. Common fraction characters such as ½ also work. Results are displayed to at most three decimal places; calculations retain their precision until display.
A result of 1.5 items is shown as 1.5, not rounded to two. The tool does not decide whether an ingredient can be divided or how to do it. Mark quantities without a numeric measure as “Unmeasured / to taste” to leave them unscaled, not treated as zero. At least one measured row is required.
Keep your original measuring system
Choose grams, kilograms, millilitres, litres, weight ounces, pounds, a named cup or fluid-ounce system, your original spoon measure, or an item count. A unit is a label here, not a conversion instruction. US, metric and Imperial cup labels are kept distinct.
No cups-to-grams conversion is made: volume and mass are not interchangeable without information about the ingredient. Tablespoon sizes can differ between countries. Keep the same original measure when using your result; selecting a different label does not convert a quantity.
Quantity arithmetic has limits
This intentionally simple tool accepts numbers and unit choices only, not recipes, ingredient names, links or preparation instructions. It uses no AI and does not infer cooking advice.
It does not validate substitutions, equipment or pan capacity, cooking times, temperatures, nutrition, allergens or recipe safety. Do not use it for preserving, fermentation, infant feeds or other safety-critical preparation. A mathematically correct multiplier is not proof that a preparation can be safely scaled.
By EatMojo Editorial · Quantity multiplication method v1 · Last reviewed . This documents arithmetic, not a tested recipe or kitchen trial.
Your entries stay private
Calculations run in your browser, without AI. We do not save or send your entries. If you consent to analytics, we can count a tool start or successful calculation, but never the values or unit choices entered. Read our privacy notice.