CalcOpenly
한국어

레시피 분량 조절

Scale a recipe to any number of servings: each ingredient is multiplied by new ÷ original servings, with cups and spoons shown as kitchen fractions.

업데이트 검증한 예제: 5

Start each line with the amount: 2, 1 1/2, 3/4, 1.5 or ½. Lines without an amount are kept as written.
시도하기
Scale factor
Scale factor: 1.5
최대 소수 자릿수: 4; 가장 가까운 값, 중간값은 0에서 먼 쪽으로
Scaled recipe
3 cups flour; 2 1/4 tsp salt; 1 1/8 cup sugar; 3 eggs; 1/2 cup milk; 375 g butter
Lines scaled
6
Lines kept as written
0

Every amount is multiplied by 1.5 to go from 4 to 6 servings; 6 of 6 lines had an amount to scale.

Servings

Recipe makes: 44Recipe makesYou need: 66You need
Scaled ingredients 행 수: 6
IngredientOriginalScaled정확함
cups flour233
tsp salt1 1/22 1/42.25
cup sugar3/41 1/81.125
eggs233
cup milk1/31/20.5
g butter250375375
계산 방법 S

  1. Scale factor

    64=1.5\frac{6}{4} = 1.5

  2. Scale each amount (first line: cups flour)

    2×1.5=3\text{2} \times 1.5 = 3

    Shown as 3.

  3. How amounts are shown

    Cups, spoons and counts are rounded to the nearest kitchen fraction (eighths, quarters, thirds, halves); ≈ marks a rounded value. Grams, kilograms, millilitres and litres are shown as decimals to 2 places.

레시피 분량 조절 소개

Every amount is multiplied by the scale factor: the servings you need divided by the servings the recipe makes. Cup, spoon and count amounts are rounded to the nearest measure a kitchen set holds (eighths, quarters, thirds and halves) and marked ≈ when rounded. Grams, kilograms, millilitres and litres stay as decimals.

The default recipe goes from 4 to 6 servings, a factor of 1.5, so 3/4 cup of sugar becomes 1 1/8 cups and 250 g of butter becomes 375 g. The Institute of Child Nutrition teaches the same two steps for school kitchens: 35 servings from a 25-serving recipe is a factor of 1.4, which turns 3 cups of tomatoes into 4.2 cups, rounded to 4 1/4.

Lines without a number, such as "salt to taste", are kept as written. Baking time, pan size and seasoning do not scale in proportion, so check them separately.

계산 예제

Default recipe from 4 to 6 servings

Ingredients, one per line
2 cups flour 1 1/2 tsp salt 3/4 cup sugar 2 eggs 1/3 cup milk 250 g butter
Recipe makes (servings)
4
Servings you need
6
Scale factor
1.5
Scaled recipe
3 cups flour; 2 1/4 tsp salt; 1 1/8 cup sugar; 3 eggs; 1/2 cup milk; 375 g butter

검증 출처: Python fractions: 2×3/2 = 3, 3/2×3/2 = 9/4, 3/4×3/2 = 9/8, 1/3×3/2 = 1/2, 250×3/2 = 375

Halving

Ingredients, one per line
1 cup sugar 2 tbsp butter 1 egg
Recipe makes (servings)
4
Servings you need
2
Scale factor
0.5
Scaled recipe
1/2 cup sugar; 1 tbsp butter; 1/2 egg

검증 출처: Python fractions: each amount × 1/2

Unscaled line, unicode fraction, range and an approximate fraction

Ingredients, one per line
Salt to taste 1½ cups oats 2-3 cloves garlic 1 cup milk
Recipe makes (servings)
6
Servings you need
5
Scaled recipe
Salt to taste; 1 1/4 cups oats; 1 2/3–2 1/2 cloves garlic; ≈ 7/8 cup milk
Lines kept as written
1
Lines scaled
3

검증 출처: Python fractions: 3/2×5/6 = 5/4; 2×5/6 = 5/3, 3×5/6 = 5/2; 5/6 = 0.833 is nearest 7/8 among eighths and thirds

25 to 35 servings (ICN worked example)

Ingredients, one per line
3 cups tomatoes
Recipe makes (servings)
25
Servings you need
35
Scale factor
1.4
Scaled recipe
≈ 4 1/4 cups tomatoes

검증 출처: Institute of Child Nutrition, Adjusting Standardized Recipes: 35 ÷ 25 = 1.4; 3 cups × 1.4 = 4.2 cups, rounded to 4 ¼ cups

자주 묻는 질문

How do you scale a recipe up or down?

Divide the servings you need by the servings the recipe makes, then multiply every ingredient by that factor. Going from 4 to 6 servings is a factor of 1.5, so 2 cups of flour becomes 3 cups; going from 4 to 2 is 0.5. The Institute of Child Nutrition advises converting mixed amounts such as 1 lb 8 oz to one unit (1.5 lb) before multiplying.

What is half of 1/3 cup or 3/4 cup?

Half of 1/3 cup is 1/6 cup: 2 tablespoons plus 2 teaspoons, because a US cup holds 16 tablespoons and a tablespoon holds 3 teaspoons. Half of 3/4 cup is 3/8 cup, or 6 tablespoons. When no standard measure matches, the calculator shows the nearest eighth or third with ≈ and gives the exact decimal in the table.

Does baking time change when you double a recipe?

Often, because baking time depends on the depth of the batter more than on its amount. Doubled batter in the same pan is twice as deep and needs longer; spread over a pan with twice the area, it keeps its depth and bakes in close to the original time. Keep the oven temperature the same and test for doneness early.

Is a cup the same size in every country?

No. A US customary cup is 8 US fluid ounces, 236.6 mL, while the metric cup used in Australia and New Zealand is 250 mL, about 6% larger. Scaling works the same in both systems because every amount is multiplied by the same factor. NIST advises weighing ingredients on a kitchen scale for accuracy rather than measuring by volume.

“레시피 분량 조절”의 정확도는 어느 정도인가요?

정확도는 입력값과 계산 방법의 가정에 따라 달라집니다. 십진 연산은 유효숫자 50자리를 사용하지만, 추정값·수치해석 방법·원본 데이터의 정밀도는 더 낮을 수 있습니다. 표시값을 반올림해도 이러한 한계는 사라지지 않습니다. 독립적인 출처의 풀이와 대조한 계산 예시: 5. 예를 들어 “Default recipe from 4 to 6 servings”은 Python fractions: 2×3/2 = 3, 3/2×3/2 = 9/4, 3/4×3/2 = 9/8, 1/3×3/2 = 1/2, 250×3/2 = 375와 대조해 확인합니다.

이 계산 방법의 출처는 무엇인가요?

Institute of Child Nutrition — Adjusting standardized recipes (factor = new yield ÷ old yield); NIST Metric Kitchen — Culinary measurement tips.

이 계산기 소개

new=old×servings neededservings made\text{new} = \text{old} \times \frac{\text{servings needed}}{\text{servings made}}

출처

  1. Institute of Child Nutrition — Adjusting standardized recipes (factor = new yield ÷ old yield)
  2. NIST Metric Kitchen — Culinary measurement tips

출처와 대조하여 검증

이 계산기에는 독립적인 출처에서 답을 얻은 계산 예제가 5개 있습니다. 테스트 모음에서 실행되며 여기에서도 실행할 수 있습니다.

관련 계산기