Kitchen conversions and substitutions

How many grams of flour are in a cup or a spoon, how °C turns into °F, which tin can stand in for another and what to use instead of baking powder, buttermilk or an egg. A cheat sheet to keep open on your phone by the stove.

Cups, glasses and spoons

240 ml US cup
250 ml Metric cup
15 ml Tablespoon
10 ml Dessert spoon
5 ml Teaspoon

Grams in a cup and a spoon

Product 1 cup (240 ml)1 tablespoon1 teaspoon
Flour125 g8 g2.5 g
Sugar205 g13 g4 g
Powdered sugar120 g8 g2.5 g
Starch130 g8 g2.5 g
Cocoa85 g5 g2 g
Semolina170 g11 g4 g
Oats90 g6 g2 g
Rice195 g12 g4 g
Buckwheat170 g11 g4 g
Poppy seeds140 g9 g3 g
Nuts120 g8 g2.5 g
Butter230 g14 g5 g
Honey345 g20 g7 g
Sour cream245 g15 g5 g
Cottage cheese230 g14 g5 g
Milk250 g16 g5 g
Water240 g15 g5 g
Oil220 g14 g5 g
Salt295 g19 g6 g
Baking powder195 g12 g4 g
Baking soda225 g14 g5 g

Level spoons and cups; flour spooned in loosely, not packed. Values are rounded — for baking, a kitchen scale is always more accurate.

Oven temperatures

°C°FGas markHeat
140 °C275 °F1Very low
150 °C300 °F2Low
160 °C325 °F3Low
180 °C350 °F4Moderate
190 °C375 °F5Moderately hot
200 °C400 °F6Moderately hot
220 °C425 °F7Hot
230 °C450 °F8Very hot
240 °C475 °F9Very hot

Fan ovens: set 20 °C (about 25 °F) lower than a recipe written for top and bottom heat.

Baking tin sizes

Round tinInchesBatter compared with 22 cm
18 cm7″×0.67
20 cm8″×0.83
22 cm9″×1.00
24 cm9½″×1.19
26 cm10″×1.40
28 cm11″×1.62

The amount of batter follows the area of the tin: a 26 cm tin needs about 1.4 times a 22 cm recipe. A 20 × 30 cm tray holds about as much as a 26 cm round tin.

What to use instead

Baking powder
1 tsp = ¼ tsp baking soda + ½ tsp lemon juice or vinegar, added with the wet ingredients.
Buttermilk or kefir
250 ml milk + 1 tbsp lemon juice or vinegar; leave for 10 minutes until it thickens.
Sour cream
Full-fat Greek yogurt, one for one. In baking the crumb is a little less tender.
One egg in cakes and muffins
1 tbsp ground flaxseed + 3 tbsp water, left for 10 minutes, or 60 g apple purée.
Butter in a batter
Neutral oil: 80 g oil for every 100 g butter. Not for shortcrust or puff pastry.
Yeast
25 g fresh yeast = 8 g active dry yeast = 7 g instant yeast.
Self-raising flour
125 g plain flour + 1½ tsp baking powder + a pinch of salt.
Vanilla sugar
10 g vanilla sugar = 1 tsp vanilla extract + 2 tsp sugar.
Powdered sugar
Blend granulated sugar with 1 tsp starch per 100 g until fine as dust.
Fresh herbs
1 tbsp chopped fresh herbs = 1 tsp dried; add dried herbs earlier in cooking.
Whipping cream (33%)
Nothing else whips the same. For sauces and soups: 200 ml milk + 30 g butter.
Wine in a sauce
Stock with 1 tsp wine vinegar or lemon juice for every 100 ml.