Kitchen conversions

REFERENCE

Recipes come from everywhere — American cups, gas marks, old imperial ounces, modern metric grams. This is the one page to keep handy so none of it trips you up.

Everything below is rounded to the figures that actually work in a home kitchen, the way UK cookbooks have done for years. Bookmark it, or print it and stick it inside a cupboard door.

Oven temperatures

Gas mark°CFan °C°F
1140120275Very cool
2150130300Cool
3170150325Warm
4180160350Moderate
5190170375Moderately hot
6200180400Hot
7220200425Hot
8230210450Very hot
9240220475Very hot

As a rule, a fan oven runs about 20°C hotter than a conventional one, so drop the conventional temperature by 20°C if you are using fan.

Weight conversions

MetricImperial
25g1 oz
50g2 oz
100g4 oz
150g5 oz
200g7 oz
225g8 oz (½ lb)
350g12 oz
450g1 lb
500g1 lb 2 oz
1 kg2 lb 4 oz

Liquid and volume

MetricImperial
5 ml1 tsp
15 ml1 tbsp
30 ml1 fl oz
150 ml¼ pint (5 fl oz)
300 ml½ pint (10 fl oz)
450 ml¾ pint (15 fl oz)
600 ml1 pint (20 fl oz)
1 litre1¾ pints

Cups to grams

American recipes measure by the cup. One US cup is about 240 ml, but the weight depends entirely on what you are measuring — here are the everyday ones.

Ingredient (1 cup)Weight
Plain or self-raising flour125 g
Caster or granulated sugar200 g
Soft brown sugar (packed)200 g
Icing sugar125 g
Butter225 g
Uncooked rice200 g
Rolled oats90 g
Fresh breadcrumbs50 g
Grated cheese100 g
Cocoa powder100 g
Honey or syrup340 g
Water or milk240 ml

Spoons and small measures

MeasureEquivalent
1 teaspoon (tsp)5 ml
1 dessertspoon10 ml
1 tablespoon (tbsp)15 ml
1 tbsp flourabout 15 g
1 tbsp sugarabout 20 g
1 tbsp butterabout 14 g
A pinchabout ⅛ tsp

Spoon measures are always level unless a recipe says heaped.

Handy kitchen equivalents

  • 1 stick of American butter = 113 g, or 8 tbsp, or ½ cup.
  • 1 large egg ≈ 50 g out of its shell.
  • Juice of 1 lemon ≈ 3 tbsp (45 ml); 1 orange ≈ 6 tbsp.
  • 1 medium onion ≈ 150 g; 1 garlic clove ≈ ½ tsp once crushed.
  • Portions: about 100 g dried pasta or 75 g dried rice per person.
  • Quick metric anchors: 1 oz ≈ 28 g, 1 lb ≈ 450 g, 1 inch ≈ 2.5 cm.