Recipe Scaler

Divide your target servings by the original: 6 ÷ 4 = 1.5. Multiply every ingredient quantity by 1.5. So 2 cups of flour becomes 3 cups, 1 tsp of salt becomes 1.5 tsp. The formula: Scaled Qty = Original Qty × (Target Servings ÷ Original Servings). This calculator does the math for you — just enter your ingredients and set the target servings.

Yes. Set your target to half the original servings. The tricky part is odd measurements — half of 1/3 cup is 2 tbsp + 2 tsp. Half of 1 egg is about 1.5 tbsp beaten egg. This tool converts to practical units so you do not have to figure that out yourself.

For baking, halving is generally safer than doubling because leavening agents, oven dynamics, and pan geometry all behave more predictably at smaller volumes.

They produce the same result. Scaling by servings (4 to 12) calculates the multiplier for you (3x). Using a multiplier directly (3x) is faster when you already know how many batches you need. Pick whichever is more natural for your situation.

For restaurant prep, servings-based scaling is more common — a catering order comes in for 75 people, so you scale your 10-serving recipe to 75. For bakeries, multiplier-based is typical — "we need 5 batches of cookie dough."

For ingredients by weight or volume, yes — the math is the same. But baking has variables that do not scale linearly:

• Oven temperature stays the same
• Bake time changes based on pan size and batter volume
• Leavening agents (baking powder, yeast) may need 80-90% of the multiplied amount for large batches
• Mixing time increases — gluten development behaves differently in large batches

Scale the quantities here, then use baker's judgment on time and technique. For unit conversions (cups to grams), use our recipe converter.

Professional kitchens use weight (grams or ounces) instead of volume for accuracy. A "cup" of flour varies by 10-15% depending on who scoops it. 120 grams is always 120 grams.

Most restaurants maintain standardized recipe cards with quantities for common batch sizes — 1x, 2x, 5x, 10x. This tool lets you generate those scaled cards instantly. Once you have your scaled quantities, use our recipe cost calculator to verify the batch cost stays within your target food cost percentage.

Three common reasons:

1. Seasoning does not scale linearly. Use 75-80% of the multiplied salt/spice amount when scaling up. A recipe that calls for 1 tsp of salt for 4 servings should use about 3.5 tsp for 20 servings, not 5 tsp.
2. Cooking times change with volume. A doubled soup takes longer to reach a boil. A doubled cake batter in the same pan takes significantly longer to bake through the center.
3. Surface-area-to-volume ratios shift. A larger pot of sauce has proportionally less surface area, which means less evaporation and concentration. You may need to simmer longer to reach the same consistency.

Scaling quantities is only half the job — costs need to scale too. A recipe that costs $4.50 per serving at 10 servings should still cost $4.50 per serving at 50 servings, but real-world factors can change that:

• Volume discounts: Buying 50 lbs of flour is cheaper per pound than buying 10 lbs
• Yield changes: Larger batches sometimes mean less proportional waste
• Labor efficiency: Prepping for 50 is not 5x the labor of prepping for 10

After scaling, run the new quantities through our recipe cost calculator with your actual purchase prices to confirm the per-serving cost. For more on managing food costs, see our guide on how to calculate food cost.

Weight (grams, ounces, pounds) is the most accurate for scaling, especially for dry ingredients. Volume measurements (cups, tablespoons) introduce inconsistency because different people pack and scoop differently.

If your recipe uses volume, convert to weight before scaling large batches. Key conversions: 1 cup flour = 120g, 1 cup sugar = 200g, 1 cup butter = 227g. Our recipe converter handles these conversions for any ingredient. For liquids, volume is fine — 1 cup of water is always 236ml regardless of who measures it.