Recipe Scaler
Scale a recipe up or down by servings, with automatic ingredient unit conversion.
About this calculator
The Recipe Scaler adjusts every ingredient quantity when you change the number of servings, multiplying each row by the to/from servings ratio. It handles cups, tablespoons, teaspoons, millilitres, litres, grams, kilograms, ounces, and pounds, and when you tag a row with a known ingredient it also shows the converted weight or volume using real ingredient densities — flour, sugar, butter, honey, and more. Invalid servings or quantities are flagged per row.
How to use the Recipe Scaler calculator
- Enter your values into the input fields.
- Read the result — it updates instantly as you type.
- Adjust the inputs to compare scenarios.
- Copy the page URL to share the exact calculation.
Common examples
- 2 cups all-purpose flour, 4 → 6 servings (×1.5) → 3.00 cups (≈360 g)
- 250 g granulated sugar, 8 → 4 servings (×0.5) → 125 g (≈148 ml)
- 3 tbsp of any ingredient, 2 → 5 servings (×2.5) → 7.50 tbsp
- 1 cup honey, 6 → 9 servings → 1.50 cups (≈510 g by density)
Frequently asked questions
How does the Recipe Scaler calculator work?
Enter your numbers and the calculator applies the standard formula for this everyday task, showing the result and how it was reached. It handles the unit and rounding details so you do not have to.
When would I use the Recipe Scaler calculator?
Whenever this comes up in daily life — planning, shopping, home projects, travel or work — and you want a quick, dependable answer instead of estimating or working it out by hand.
How accurate are the results?
The math runs at full precision internally and only the displayed value is rounded for readability. For real-world use the practical limit is the accuracy of the numbers you enter, not the calculation.
Can I share a specific calculation with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same calculation for whoever clicks it.