Recipes speak three languages: American cups, metric milliliters/grams, and old British imperial. This guide is the translator — every table you need to cook any recipe from anywhere, plus the traps (cup standards, weight vs volume, oven temps, pan sizes) that ruin dishes. Whether you found a French blog’s cake or your grandmother’s handwritten American pie, this page rescues it.
The Three Recipe Languages
| System | Volume | Weight | Used in |
|---|---|---|---|
| American | cups, tbsp, tsp, fl oz | ounces, pounds | US recipes |
| Metric | ml, liters | grams, kg | Most of the world |
| Imperial (old) | cups (284 ml!), pints | ounces, pounds | Old UK cookbooks |
Volume: The Master Table
| US | Metric | Tablespoons |
|---|---|---|
| 1 tsp | 5 ml | 1/3 tbsp |
| 1 tbsp | 15 ml | 3 tsp |
| 1 fl oz | 30 ml | 2 tbsp |
| 1/4 cup | 59 ml | 4 tbsp |
| 1/3 cup | 79 ml | 5 tbsp + 1 tsp |
| 1/2 cup | 118 ml | 8 tbsp |
| 1 cup | 237 ml | 16 tbsp |
| 1 pint | 473 ml | 32 tbsp |
| 1 quart | 946 ml | — |
Trap #1: The Four Cups
A “cup” is 237 ml (US), 240 ml (US food labels), 250 ml (metric/Australia), or 284 ml (old UK). Full breakdown in How Many ml in a Cup? — when in doubt, check the recipe’s country. A British cookbook from the 1970s saying “1 cup” means 284 ml — nearly 20% more than an American cup. That’s the difference between a moist cake and a soggy one.
Trap #2: Weight vs Volume
A cup of flour (≈125 g) and a cup of sugar (≈200 g) weigh completely different amounts. Cups measure space; recipes need mass. For baking, always prefer grams — see How Many Grams in a Cup of Flour?. The professional rule: liquids in volume, solids in weight. Water, milk, and oil are safe in cups (1 cup water = 237 g, always). Flour, sugar, and cocoa are not.
Quick Ingredient Weights
| 1 US cup of… | Grams |
|---|---|
| Water / milk | 237 |
| All-purpose flour | 125 |
| Granulated sugar | 200 |
| Butter | 227 |
| Honey | 340 |
Rescue Mission: Converting a Foreign Recipe Step by Step
Found a recipe in the “wrong” system? Don’t convert ingredient by ingredient as you cook — convert the whole recipe first, write it out, then cook. The method: (1) Identify the recipe’s system (country of origin is the biggest clue). (2) Convert all volumes via the master table above. (3) Convert all weights to your scale’s unit.
(4) Convert the oven temperature (see table below). (5) Check pan sizes — a “9-inch pan” recipe in an 8-inch pan needs ~25% less batter or it overflows. (6) Convert yields: “serves 8” at 1.5× for 12 guests — multiply everything, including salt and leavening (but see the scaling warning below).
Oven Temperature Conversions
| °F (US) | °C | Gas Mark (UK) | For… |
|---|---|---|---|
| 275°F | 140°C | 1 | Slow roasting, meringues |
| 325°F | 165°C | 3 | Casseroles |
| 350°F | 175°C | 4 | Cakes, cookies (the default) |
| 400°F | 200°C | 6 | Roasting vegetables |
| 425°F | 220°C | 7 | Crispy potatoes, bread |
| 450°F | 230°C | 8 | Pizza |
Fan/convection ovens circulate heat — reduce the temperature by 20°C (35°F) from what a conventional recipe states, or the outside burns before the inside cooks.
Scaling Recipes: The Rules Nobody Tells You
Doubling a recipe isn’t just ×2. Salt and spices: scale at 1.5×, not 2×, then taste — they concentrate. Leavening (baking powder/soda): increase by only 1.25–1.5× when doubling; too much causes collapse and metallic taste. Cooking time: does NOT double — a doubled cake needs roughly 1.25–1.5× the time; check doneness early.
Pan math: doubling batter needs a bigger pan, not a deeper fill — batter depth should stay roughly constant or the center stays raw. Eggs: round sensibly (3 eggs × 1.5 = 4.5 → use 4 large + 1 yolk).
Pan Size Conversions
The most overlooked conversion. A 9-inch round pan holds ~25% more than an 8-inch round. If your pan is smaller than the recipe’s: reduce batter by the area ratio, or bake in batches. Quick reference: 8″ round → 9″ round = ×1.25 batter; 9×13″ pan ≈ two 8″ rounds; a 9″ round ≈ an 8×8″ square. When in doubt, fill pans no more than two-thirds full.
The Australian Tablespoon Exception
Almost everywhere, 1 tbsp = 15 ml. Australia uses 20 ml tablespoons — the one real exception in world cooking. An Australian recipe calling for “2 tablespoons” means 40 ml, not 30. If your Aussie recipe tastes off, this is probably why. (New Zealand follows the Australian 15 ml standard for most modern recipes, but older ones may use 20 ml — check the publication date.)
Ingredient States Matter
“1 cup chopped onions” ≠ “1 cup onion purée” — same ingredient, different preparation, different weight. “1 cup melted butter” (227 g) behaves differently from “1 cup cold butter, cubed” in volume terms. Brown sugar must be packed unless stated otherwise. “1 cup sifted flour” vs “1 cup flour, sifted” differ by ~25% — the first is measured after sifting, the second before. Read the comma placement; it’s doing real work.
Conclusion
Every “failed” foreign recipe is really a translation failure — a 284 ml imperial cup read as 237 ml, an Australian tablespoon read as 15 ml, a fan oven run at conventional temperature. The fix is never talent; it’s a system: identify the recipe’s country, convert everything before you start cooking, respect the traps (cup standards, weight vs volume, pan sizes, scaling rules), and when it matters — baking — weigh it. The world’s recipes are now one master table away. Go rescue that French cake.
Frequently Asked Questions
How many grams in a cup?
It depends on the ingredient — 125 g flour, 200 g sugar, 237 g water. There’s no single answer; that’s why grams beat cups.
Is a tablespoon 15 ml everywhere?
Almost — the US tablespoon is 14.8 ml, rounded to 15. Australia uses a 20 ml tablespoon (the one real exception).
Can I convert cups to grams without a scale?
Approximately, using tables like the one above — but a $10 kitchen scale is the single best upgrade for baking accuracy.
What does “1 stick of butter” mean?
A US stick = 113 g = 1/2 cup = 8 tbsp. (The NIST defines the underlying US measures.)
Why do American recipes use cups instead of grams?
Tradition + convenience — cups need no scale. The trade-off is precision, which is why serious bakers worldwide weigh everything.
How do I halve a recipe with odd egg counts?
Beat the egg and measure half by volume (1 large egg ≈ 3 tbsp), or use the yolk/white split: halve 3 eggs as 1 whole + 1 white.
Do I need to adjust for high altitude?
Above ~3,500 ft: reduce sugar slightly, increase liquid, reduce leavening by ~25%, and raise oven temp by 15–25°F. Water boils cooler, so everything dries faster.