Quick Calculators

Cooking Time & Temp Converter

Adjust your recipe's cooking time perfectly when you change the oven temperature.

Adjusted Cooking Time:
28 Minutes
(Check it 22 minutes in just to be safe!)
Pro Tip: As a general rule, increasing the oven temperature by 25°F means you should decrease the baking time by about 20%. Keep an eye on the food, as higher temperatures also cause the outside to brown faster.

Adjusting Oven Times and Temperatures

Have you ever wanted to speed up a 45-minute casserole by blasting it at a higher temperature? Or perhaps you are baking two different dishes at the same time and need to compromise on the oven temperature? Our Cooking Time Adjustment Calculator tells you exactly how to adjust the time.

The 25-Degree Rule

While baking is a science, adjusting temperatures doesn't perfectly scale linearly. However, culinary experts use a reliable rule of thumb:

  • Increase Temp by 25°F: Decrease time by ~20%
  • Decrease Temp by 25°F: Increase time by ~20%

Our calculator uses a specific mathematical curve to calculate these exact adjustments for any temperature change, whether you use Fahrenheit or Celsius.

When NOT to Change Temperatures

While you can easily adjust the temperature for roasted vegetables, casseroles, and meats, you should be very careful when baking pastries, cakes, and breads. High temperatures create rapid steam and cause the outside of a cake to set and crust over before the inside has finished expanding, resulting in a cracked, volcanic cake.

Frequently Asked Questions

The general rule of thumb is: if you increase the temperature by 25°F, decrease the baking time by about 20-25%. If you decrease the temperature by 25°F, increase the baking time by 20-25%.
Yes, but you have to be careful. Baking at 400°F will cook the outside of the food much faster than the inside. This is fine for vegetables or thin meats, but for cakes and dense breads, the outside will burn before the inside finishes baking.
Yes. Convection ovens circulate hot air, making them more efficient. You should generally lower the recipe temperature by 25°F when using a convection oven, and check the food about 25% earlier than the recipe states.