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Recipe Converter: Scale, Double or Halve Any Recipe

Paste your ingredient list, then say how many servings the recipe makes and how many you want, or simply multiply it by 2, 1.5 or 0.5. Every amount is scaled into measures you can actually use (1⅛ cups, ¾ tsp), and teaspoons, tablespoons and cups are tidied up for you.

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Amounts like 1 1/2, 1½, 0.5 or 2–3 work, with cups, tbsp, tsp, oz, lb, g, ml and more.

Scale by

2 doubles the recipe, 0.5 halves it, 1.5 makes it one and a half times.

Tidy units

Multiplier

 

Baking? Pan size and baking time change too: a doubled cake needs a bigger pan or two pans, and check it early.

For readers in the United States. Estimates for planning only — not financial, investment, tax or legal advice. Disclaimer · How we check our numbers

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How to use the recipe converter

  1. Paste the ingredient list, one ingredient per line, straight from a recipe website, a cookbook photo or your notes.
  2. Choose how to scale: by servings (the recipe makes 12, you want 18) or by a multiplier (× 2, × 1.5, × 0.5).
  3. Copy the scaled list, print it, or save it as a PDF to cook from.

Kitchen measurement conversions

Measure Tablespoons Teaspoons Fluid oz Milliliters
1 cup 16 tbsp 48 tsp 8 fl oz 237 ml
¾ cup 12 tbsp 36 tsp 6 fl oz 177 ml
⅔ cup 10 tbsp + 2 tsp 32 tsp 5.3 fl oz 158 ml
½ cup 8 tbsp 24 tsp 4 fl oz 118 ml
⅓ cup 5 tbsp + 1 tsp 16 tsp 2.7 fl oz 79 ml
¼ cup 4 tbsp 12 tsp 2 fl oz 59 ml
1 tbsp 1 tbsp 3 tsp ½ fl oz 15 ml

Weight: 1 lb = 16 oz = 454 g, and 1 oz = 28 g.

Doubling and halving: what to watch

  • Eggs. Round to the nearest whole egg. For half an egg, beat one and use about 2 tablespoons.
  • Salt, spices and chili. Scale them, then taste. When doubling, start with about 1¾ times and add the rest if needed.
  • Baking powder and yeast. Scale these exactly; they matter more than anything else in a bake.
  • Pans and timing. Keep the batter or food at the same depth. A doubled cake goes into two pans, not one deeper pan.
  • Slow cookers and pressure cookers. Don't fill more than two-thirds full when you scale up.

Scaling recipes for meal prep and the week

Scaling is how you cook once and eat twice: double a chili on Sunday and you have a second dinner or lunches for the week. A weekly meal plan template helps you plan those extra portions.

Simmer, our meal planner app, scales any recipe in its recipe box to the servings you plan, adds up the scaled ingredients across the week into one grocery list (3 + 4 + 4 cloves of garlic become 11), and shows each scaled step in cook mode with timers. Try the free demo. To see what the bigger batch will cost, use the recipe cost calculator. If your recipes are scattered across screenshots and cookbooks, here's how to organize recipes.

Frequently asked questions

How do I scale a recipe?

Divide the number of servings you want by the number the recipe makes to get the multiplier, then multiply every ingredient by it. To turn a 4-serving recipe into 6 servings, the multiplier is 6 ÷ 4 = 1.5, so 2 cups of flour becomes 3 cups and ½ tsp of salt becomes ¾ tsp.

How do I double a recipe?

Multiply every ingredient by 2. Use the Multiplier option and press × 2. Spices and salt can go slightly under double, and baking times change, so check doubled bakes early.

How do I halve a recipe?

Multiply by 0.5. Halving 3 tbsp gives 1½ tbsp, which the converter shows as 1½ tbsp (or 4½ tsp). For an odd number of eggs, beat the egg and use about half of it, roughly 2 tablespoons.

How many tablespoons are in a cup?

There are 16 tablespoons in a cup, and 3 teaspoons in a tablespoon, so 48 teaspoons in a cup. ¼ cup is 4 tablespoons, ⅓ cup is 5 tablespoons plus 1 teaspoon, and ½ cup is 8 tablespoons.

Does baking time change when I scale a recipe?

Usually. A bigger batch in a deeper pan takes longer to bake, and a smaller one in the same pan bakes faster. Keep the batter at the same depth by changing the pan size, and start checking about 10 minutes early.

Can it convert grams to cups?

No. Grams are weight and cups are volume, and the conversion depends on the ingredient: a cup of flour weighs about 120 g but a cup of sugar about 200 g. The converter keeps metric amounts in metric and US amounts in US measures.

What is a serving size calculator?

It's the same idea: tell it how many servings a recipe makes and how many you need, and it works out the new amount of every ingredient. That's the Servings option in this recipe converter.

Written by

Emma Whitfield

Finance Specialist & Editor, VaultlyApps

Emma Whitfield writes and edits the VaultlyApps money guides and free calculators. Her focus is US household finance — budgeting on a real paycheck, paying down credit card and student debt, emergency funds and savings goals, renting — and the money side of freelancing and small-business income, from pricing and profit margins to self-employment tax. Every guide is researched against primary sources such as IRS publications and the CFPB, every number is checked in our tested calculators, and tax content is reviewed each year when new IRS figures come out. Emma is not a licensed financial adviser or tax preparer; her work is general education, not personal advice.

Researched against primary US sources, checked against independent calculators and reviewed by a finance expert on our team. Written for US readers — general education, not financial, tax or legal advice. Editorial policy · Disclaimer

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A meal planning app with a grocery list that writes itself: plan the week from your own recipes, see the cost per serving of every meal, use up what's in the pantry and keep the food budget in check, on your phone and computer. The live demo uses sample data — nothing to install, no sign-up.

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