Recipe Doubler

Double every ingredient in one go — no mental math, no ads, no popups, no life stories. Free, no sign-up.

A recipe doubler multiplies every ingredient in a recipe by 2, so a recipe that serves 4 feeds 8. Paste your ingredient list below, set the servings to double, and the calculator rewrites every amount for you — including the awkward fractions, like ¾ cup becoming 1½ cups.

Double Recipe Calculator

Paste your ingredients, then set the target servings to twice the original (4 → 8, 6 → 12). That's a 2× scale factor — every quantity doubles instantly.

How Do You Double a Recipe?

Multiply every ingredient quantity by 2 and keep the method the same. That's the whole trick — the fiddly part is the fractions, and the traps are pan size and cooking time (covered below). Here's a doubled cookie recipe as a worked example:

Notice the butter: 6 tablespoons doubled is 12 tablespoons, but since 16 tablespoons make a cup, it's far easier to measure ¾ cup once than to count out 12 spoonfuls. A good doubler converts to the friendliest unit for you.

Recipe Doubling Chart

The measurements that trip people up, doubled. Mixed amounts like "1 tbsp + 1 tsp" double piece by piece — double the tablespoons, double the teaspoons.

Three Things That Don't Double

• Cooking time. Two trays of cookies bake in roughly the same time as one (rotate them halfway). A doubled casserole or cake in a deeper dish needs maybe 15–25% longer — not twice as long. Keep the oven temperature the same and start checking doneness at the original time.
• The pan. Doubled cake batter in the original pan bakes up with burnt edges and a raw middle. Use two pans of the original size, or one with roughly twice the area. On the stove, a crowded skillet steams food instead of searing it — brown doubled meat in batches.
• Salt, chili, and strong spices.Doubling leavening like baking soda is fine at 2×, but seasoning intensifies. Start with about 1.5× the salt and heat, then taste near the end and top up. You can always add more; you can't take it out.

More Ways to Resize a Recipe

Doubling is one flavor of scaling. For any other factor, the recipe scaler resizes a recipe to any number of servings. Cooking for fewer people? Use the recipe halver. Tripling for a party or batch-cooking? The recipe multiplier handles 3×, 4×, and beyond. And if your doubled recipe is written in cups and sticks, the recipe-to-metric converter switches it to grams and millilitres.

To double a recipe straight from a website — without copy-pasting the ingredients — paste the URL into the Drizzlelemons recipe converter. It extracts a clean, ad-free recipe you can scale to any size, save, and follow hands-free in Cook Mode.

Recipe Doubling FAQ