Recipe Scale Calculator
Scale any recipe up or down. Enter original servings and target servings to get adjusted ingredient quantities.
Scale
2.00×
About the Recipe Scale Calculator
Scaling a recipe is simple arithmetic in theory but requires judgment in practice. Most ingredients scale linearly, but baking chemistry has exceptions: leavening agents (baking powder, soda, yeast) at 4x may need only 3x to avoid a bitter taste; spices at 4x may be overpowering at full scale. This calculator handles the math and flags the exceptions so you can cook or bake for any crowd size with confidence.
Recipe Scaling
Scaling factor = Target servings / Original servings · New quantity = Original quantity × Scaling factor
Linear scaling: most ingredients · Non-linear adjustments: salt (start at 75% of scaled amount), baking powder/soda (use 75-80% of scaled amount for 4× or more), spices (start at 60-70% of scaled amount, adjust to taste)
Worked Example
Biryani recipe for 6 people, scaling to 24 people
Factor = 4 · Rice: 2 cups → 8 cups · Chicken: 1 kg → 4 kg · Oil: 4 tbsp → 16 tbsp · Salt: start at 3 tbsp (not 4 tbsp) - adjust after tasting
Tips & Insights
- 1
Cooking time rarely scales linearly - a 4× batch in a larger pot may only take 50% more time since heat penetration is the limiting factor.
- 2
For baking, scaling beyond 3× is risky without a test batch. Chemical reactions behave differently at large scale.
- 3
Indian recipes rarely specify exact quantities - standard measures like 'handful' or 'to taste' need estimation before scaling.
Why this matters for you
Home cooks scaling recipes for parties, caterers managing large events, and home bakers experimenting with batch sizes all need reliable scaling calculations. Getting the biryani wrong for 30 guests because of a mental math error is both embarrassing and wasteful - accurate scaling prevents these costly mistakes.
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