Cooking and baking should be simple, but recipes rarely use the same measurements. One calls for cups, another for grams. One lists Fahrenheit, another Celsius. And air fryer cooking times almost never match the oven times you are used to.
With online recipes coming from all over the world, a little converting is often the difference between a great result and a ruined one.
This guide brings the most useful conversions together in one place, so you can follow any recipe with confidence, whatever units it uses.
What You Will Find in This Guide
- How to convert air fryer time to oven time
- A Fahrenheit to Celsius guide for common oven temperatures
- Cups to grams, millilitres and ounces
- Tablespoon and teaspoon measures made simple
- How your Bennett Read air fryer fits in
Air Fryer to Oven Time and Temperature
The rule for converting between an air fryer and an oven is straightforward.
An air fryer cooks hotter and faster because it circulates air in a small space.
To convert an oven recipe to an air fryer, lower the temperature by about 20°C and reduce the cooking time by roughly 20%.
To go the other way, raise the temperature by 20°C and add about 20% to the time.
For example, a dish that takes 25 minutes at 200°C in the oven will usually need around 20 minutes at 180°C in an air fryer.
Always check your food a few minutes early until you get to know your appliance.
Fahrenheit to Celsius
To convert Fahrenheit to Celsius, subtract 32 and divide by 1.8.
Many recipes, especially American ones, use Fahrenheit, so these are the most common oven temperatures worth knowing:
- 150°C = 300°F
- 160°C = 325°F
- 180°C = 350°F
- 190°C = 375°F
- 200°C = 400°F
- 220°C = 425°F
- 230°C = 450°F
Cups, Grams and Millilitres
South African recipes use the metric cup, where one cup equals 250ml.
Volume conversions are fixed and never change:
- 1 cup = 250ml
- ½ cup = 125ml
- ? cup = 80ml
- ¼ cup = 60ml
Cups to grams is different, because weight depends on the ingredient.
This is why weighing is more accurate than measuring by cup when baking.
As a rough guide:
- 1 cup flour = about 120g
- 1 cup sugar = about 200g
- 1 cup butter = about 230g
Spoons and Ounces
The smaller measures are easy once you know them, and they come up in almost every recipe:
- 1 tablespoon (tbsp) = 15ml
- 1 teaspoon (tsp) = 5ml
- 1 tablespoon = 3 teaspoons
- 1 fluid ounce (oz) = about 30ml
- 1 cup = 8 fluid ounces
How Your Bennett Read Air Fryer Fits In
Getting these conversions right is what stands between a perfectly baked cake and a disappointing one.
Both the Bennett Read 6.6L Digital Air Fryer and the 11L Digital Air Fryer work in Celsius and adjust from 30°C to 200°C, so once you have converted your recipe, setting the temperature is simple.
Preheat for a few minutes, apply the air fryer time rule, and check your food early.
With the conversions sorted, almost any oven recipe becomes an air fryer recipe.
A good recipe should never be lost in translation.
Whether you are converting an oven recipe for the air fryer, switching Fahrenheit to Celsius, or measuring cups into millilitres, these conversions take the guesswork out of cooking and baking.
Keep them somewhere handy and every recipe becomes easy to follow.
Explore the full Bennett Read air fryer range to find the right one for your kitchen.
FAQs
How do I convert air fryer time to oven time?
To convert air fryer time to oven time, raise the temperature by about 20°C and add roughly 20% to the cooking time, because an oven cooks more slowly than an air fryer.
For example, 20 minutes at 180°C in an air fryer becomes around 24 minutes at 200°C in the oven.
Check your food towards the end to be sure.
How long is 20 minutes in the oven in an air fryer?
As a rule, reduce oven time by about 20% for an air fryer.
So 20 minutes in the oven becomes roughly 16 minutes in an air fryer, at a temperature around 20°C lower.
Air fryers cook faster because they circulate hot air in a small space, so always check a few minutes early.
Is 350°F the same as 180°C?
Yes, near enough.
350°F converts to 176°C, which is almost always rounded up to 180°C in recipes and on appliance dials.
It is one of the most common baking temperatures, ideal for cakes, muffins and biscuits.
So, when a recipe says 350°F, setting your air fryer or oven to 180°C is correct.
How do you convert Fahrenheit to Celsius?
To convert Fahrenheit to Celsius, subtract 32 from the Fahrenheit figure, then divide by 1.8.
For example, 400°F minus 32 is 368, divided by 1.8 gives about 200°C.
To go the other way, multiply the Celsius figure by 1.8 and add 32.
It is worth memorising the common oven temperatures to save time.
