Converting Cooking Temperatures: Fahrenheit, Celsius, and Gas Marks
Why Recipe Temperatures Differ by Region: American recipes use Fahrenheit. European recipes use Celsius. British recipes sometimes list "gas marks." A mismatch can ruin a bake or undercook meat. Knowing the exact conversion ensures consistent results across any cookbook.
Oven Temperature Chart: 275°F = 135°C = Gas Mark 1. 300°F = 150°C = Gas Mark 2. 325°F = 165°C = Gas Mark 3. 350°F = 175°C = Gas Mark 4. 375°F = 190°C = Gas Mark 5. 400°F = 200°C = Gas Mark 6. 425°F = 220°C = Gas Mark 7. 450°F = 230°C = Gas Mark 8.
Common Mistakes: Using a rough "double and add 30" mental shortcut for baking temperatures — the actual formula is (°C × 9/5) + 32. Trusting your oven dial: most home ovens run 10–25 degrees off, so an oven thermometer is essential. Preheating only until the light turns off: wait an extra 10 minutes for thermal stability.
Pro Tip for International Recipes: When a recipe says "moderate oven," it usually means 350°F / 175°C. "Hot oven" means 425°F / 220°C. Bookmark ConvertNow's temperature converter and keep a printed copy in your kitchen drawer.