Recipe Scaling Converter
Easily adjust your recipes for any number of servings. Calculate exact ingredient amounts and avoid kitchen measurement guesswork.
Scale Your Ingredients
Enter the original recipe servings, your desired servings, and the ingredient amount to instantly calculate the perfectly scaled quantity.
Recipe Portion Converter
Adjust quantities for any batch size.
Scaling Rules of Thumb
Essential tips for kitchen success
Mastering Recipe Conversion
Successfully scaling a recipe requires more than just basic multiplication. Follow these best practices to ensure your adjusted dish turns out perfectly.
Calculate the Multiplier
Divide your desired number of servings by the original number of servings. For example, if a recipe serves 4 and you need it to serve 10, your multiplier is 2.5 (10 ÷ 4 = 2.5).
Convert to Weight (Highly Recommended)
Before scaling, convert volume measurements (cups, tablespoons) to weight (grams) using a conversion chart. Weight is absolute and eliminates the errors caused by packing or settling of ingredients.
Scale Potent Ingredients Conservatively
Spices, herbs, chilli, and salt can quickly overpower a scaled-up dish. Multiply these by only 0.75 of your calculated factor, then add more to taste at the end of cooking.
Adjust Equipment and Time
A larger volume of food may require a larger pot or pan to ensure even heat distribution. Stir more frequently and check for doneness a few minutes before the original recipe’s stated time.
Ingredients to Watch
Tricky items when scaling
Common Kitchen Conversions
Handy metric and imperial conversion equivalents to help you translate and scale recipes accurately.
| Imperial / Volume | Metric / Weight | Notes |
|---|---|---|
| 1 Teaspoon (tsp) | 5 ml | Standard UK/US metric teaspoon. |
| 1 Tablespoon (tbsp) | 15 ml | Equals 3 teaspoons. |
| 1 Fluid Ounce (fl oz) | 28.4 ml (UK) / 29.6 ml (US) | UK imperial fl oz is slightly smaller than US. |
| 1 Cup | 240 ml (US) / 250 ml (Metric) | Always check the recipe’s origin. UK recipes increasingly use metric cups (250ml). |
| 1 Ounce (oz) | 28.35 g | Weight measurement, crucial for baking. |
| 1 Pound (lb) | 453.6 g (or 0.45 kg) | Equals 16 ounces. |
| 1 Large Egg | ~50 g (without shell) | Useful for scaling fractional egg amounts. |
| 1 Stick of Butter (US) | 113 g (or 8 tbsp) | UK butter is typically sold in 250g blocks. |
Recipe Scaling FAQ
Answers to the most frequently asked questions about converting recipes, measuring ingredients, and adjusting cooking times.
To scale a recipe, divide your desired number of servings by the original number of servings to find the scaling multiplier. Then, multiply every ingredient amount by this number. For example, to double a recipe for 4 to serve 8, multiply all ingredients by 2.
No, cooking and baking times do not scale linearly. If you double a recipe, you do not double the cooking time. A larger volume may take slightly longer to cook, but you should rely on visual cues, internal temperatures, and testing (like inserting a skewer) rather than simply multiplying the time.
Using a digital kitchen scale to measure ingredients by weight (grams or ounces) is the most accurate method. Volume measurements (like cups or tablespoons) can vary significantly depending on how tightly an ingredient is packed or settled.
It is best to scale potent spices, herbs, and salt conservatively. Multiply them by about 0.75 of the calculated scaling factor, then taste and adjust at the end of cooking. Over-scaling spices can easily overpower a dish.