Everyday Adult Skills · Foundation

Scaling recipes and converting kitchen measurements

Recipes are written for a set number of servings. Scaling means multiplying every ingredient by the same number so it still works.

Ages
9+ (rough guide)
Level
Foundation
Subject
Everyday Adult Skills
Time
15 minutes
Format
Online + printable
Try it online Print worksheet & answers Online + Print
  1. 1Learn it
  2. 2See it worked
  3. 3Try it online
  4. 4Print it
  5. 5Check your answer

Before you start

Who it's for and what to know first

Multiplying and dividing by simple numbers.

Learn it

How it works

  • Scale factor = servings you want ÷ servings in the recipe. For 6 people from a recipe for 4: 6 ÷ 4 = 1.5.
  • Multiply every ingredient by the scale factor.
  • Metric: 1 kg = 1,000 g; 1 litre = 1,000 ml.
  • Cooking times do not always scale — larger cakes may need longer at a lower temperature. Check as you go.

Worked example 1

A recipe for 4 uses 300 g flour. How much for 6?

  1. Scale factor 6 ÷ 4 = 1.5.
  2. 300 × 1.5 = 450.

Answer: 450 g

Try it online · print it · check it

Practice questions

Scale each ingredient or convert the measurement. Type your answer, then press Check answers.

Tips

Common mistakes

  • Scaling some ingredients but not others.
  • Mixing grams and kilograms in the same calculation.

Where next?

RelatedFractions of amountsFinding a fraction of an amount means working out, for example, 3/4 of 20 sweets or 2/5 of £45.RelatedMetric and imperial conversionsThe metric system (grams, metres, litres) is used in science and most countries.MoreAll Everyday Adult Skills resourcesThe reading, writing and number skills used every day at home and work.

Last reviewed: 25 September 2026