How to Scale a Recipe by Servings
Divide the servings you want by the servings the recipe makes. For 4 to 6 servings, 6 ÷ 4 = 1.5: multiply every ingredient by 1.5. This assumes each serving stays the same size.
- 3 min read
- Updated 2026-10-22
Printable conversion chart
Use your browser’s Print command for this chart and your scaled ingredient list.
| Original servings | Desired servings | Multiplier |
|---|---|---|
| 4 | 6 | 1.5 |
| 6 | 4 | 2/3 |
| 8 | 3 | 3/8 |
| 6 | 10 | 5/3 |
| 12 | 18 | 1.5 |
| 4 | 1 | 1/4 |
Each multiplier is desired yield ÷ original yield. Fractions can be entered directly in the scaler.
Scale your ingredients
Replace the example in the scaler below with your ingredients, one quantity per line. The starting multiplier is 1.5; change it for your conversion direction or batch size. This scales quantities, not baking time or ingredient densities.
A complete 4-to-6 example
Suppose a four-serving recipe uses 320 g pasta, 500 g sauce and 120 g vegetables. At ×1.5, use 480 g pasta, 750 g sauce and 180 g vegetables. These are arithmetic examples, not a tested recipe. The scaler above starts at 1.5; replace its sample ingredients with your own list, or use its original and desired servings controls.
Decide what a serving means
Six small side portions are different from six main-course portions. If the original recipe calls one cookie a serving and you plan two per guest, calculate the cookie count first. For 10 guests receiving two cookies each from a 12-cookie recipe, the multiplier is 20/12, not 10/12.
Match the cooking setup to the new yield
More servings do not mean proportionally longer cooking. Keep individual portions the same size when practical. A larger soup batch takes longer to heat; a crowded skillet may steam instead of brown. Use batches or appropriately sized cookware. For a cake, choose pan area to maintain depth rather than putting a larger quantity into the original pan.
Review ingredients that are not simple quantities
A line such as “oil for frying” has no measured amount to multiply. Pan-greasing oil, water used to boil pasta and evaporation depend on equipment and method. Start with proportional measured ingredients, season to taste where appropriate and preserve the balance of leaveners in baking. Keep package size separate from package count.
Round at the end
For 6 to 10 servings, use 5/3 rather than 1.7. A 300 g ingredient then becomes 500 g rather than 510 g. Use a scale for small fractions when possible, and write down the final quantities before cooking. If an ingredient is too small for your scale to read reliably, choose a suitable measuring spoon or a more convenient batch size.
Frequently asked questions
What is the multiplier for 4 to 6 servings?
Six divided by four is 1.5.
How do I reduce 6 servings to 4?
Multiply ingredient quantities by 4/6, which simplifies to 2/3.
Do I multiply cooking time too?
No. Portion size, depth, cookware and heating conditions determine time.
What if I want larger servings?
Account for portion size as well as the number of people before calculating the multiplier.