Rex says
The fast lane for the math you almost remember from school. Type the numbers, get the answer, move on with your day.
Try a scenario
Click to load — tweak from there.Inputs
Result
Scale factor
12.50
Scaled ingredient quantity
100.00
Scaled total batch weight
75.0
Suggested seasoning scale factor
11.25
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How to use this
- 1Enter original recipe yield (portions).
- 2Enter target yield (portions).
- 3Enter sample ingredient quantity (original recipe) (oz).
- 4Enter original total batch weight (optional) (lb).
- 5Read your scale factor on the right — it updates as you type.
- 6Hit Share to keep the scenario or send it to someone.
About this calculator
Scaling a recipe isn't just multiplication once you go beyond small factors — cooking times, pan sizes, leavening ratios, and seasoning intensity don't scale linearly the way raw ingredient weights do. But the starting point is always the scale factor: new yield divided by original yield. This calculator gives you that factor and applies it to a sample ingredient quantity so you can check your math, plus shows the new total batch weight if you enter it. Use it for banquet scaling (a 12-portion recipe scaled to 150 covers), bakery batch production (scaling a test batch of dough to a full sheet pan run), or right-sizing a recipe that's currently written for the wrong station. A rule of thumb: scale factors under 2x rarely need seasoning adjustment, but above 4-5x, salt, spice, and leavening should be scaled at roughly 90% of the linear factor and adjusted to taste, since surface-area-to-volume ratios change how strong seasoning reads.
Worked example
Using the values the calculator loads with:
Inputs
- Original recipe yield: 12 portions
- Target yield: 150 portions
- Sample ingredient quantity (original recipe): 8 oz
- Original total batch weight (optional): 6 lb
Results
- Scale factor: 12.5
- Scaled ingredient quantity: 100
- Scaled total batch weight: 75
- Suggested seasoning scale factor: 11.25
What each field means
Inputs
- Original recipe yield (portions)
- The original recipe yield used in the calculation, measured in portions. Starts at 12 portions so you have a working example on load.
- Target yield (portions)
- The target yield used in the calculation, measured in portions. Starts at 150 portions so you have a working example on load.
- Sample ingredient quantity (original recipe) (oz)
- The sample ingredient quantity (original recipe) used in the calculation, measured in oz. Starts at 8 oz so you have a working example on load.
- Original total batch weight (optional) (lb)
- The original total batch weight (optional) used in the calculation, measured in lb. Starts at 6 lb so you have a working example on load.
Results
- Scale factor
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Scaled ingredient quantity
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Scaled total batch weight
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Suggested seasoning scale factor
- Returned as a decimal number. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
Do all ingredients scale the same as the main quantities?
Weight-based ingredients like flour, protein, and produce scale linearly and reliably. Leavening agents (yeast, baking powder), salt, and strong spices should scale slightly under the linear factor at large batch sizes because concentration effects intensify flavor and speed reactions.
Does cooking time scale with the recipe?
No, and this is the most common scaling mistake. Doubling a braise doesn't double cook time — thermal mass and pan depth matter more than proportion. Scale cook time by testing with a thermometer or by adding roughly 15-25% more time per doubling for dense proteins, not a linear multiple.
What about pan size when scaling baked goods?
Match pan surface area to the new batch volume, not linear dimensions. A 9x13 pan (117 sq in) scaled to 2x volume needs about 234 sq in of surface area, which is closer to two 9x13 pans than one larger pan, or you'll get an uneven bake.
How do I scale down a recipe for a single test batch?
Same math in reverse — set new yield lower than original to get a scale factor under 1. Round to practical measuring quantities and taste-test seasoning before committing to a full-size production run, since down-scaling exposes rounding errors faster than up-scaling.
Accuracy and limitations
- Results are rounded for display; the underlying calculation keeps full precision.
- Very large or very small inputs may hit floating-point limits in the browser.
- Inputs outside the accepted range are clamped rather than rejected.
Related tools
Dough Batch Scaling Calculator (Baker's Percentage)
Scale a dough formula using baker's percentages to any flour weight.
Banquet BEO Cost Calculator
Full per-head cost and margin for a banquet event order.
Food Cost Percentage Calculator
Find your plate cost as a share of menu price and where it lands vs. target.
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Recipe Yield & Batch Scaling Calculator. Retrieved from https://www.revenuelab.fyi/toolbox/recipe-yield-scaling
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/recipe-yield-scaling" target="_blank" rel="noopener">Recipe Yield & Batch Scaling Calculator — RevenueLab</a> (2026).</p>
Source: [Recipe Yield & Batch Scaling Calculator — RevenueLab](https://www.revenuelab.fyi/toolbox/recipe-yield-scaling) (2026).