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🍳 Free Kitchen Tools

Kitchen
Calculators

Every calculator you need in the kitchen — convert oven recipes for your air fryer, find ingredient substitutes, and adjust cooking times across methods. Instant results, no signup.

✓ Free forever ✓ No signup ✓ Instant results ✓ Works on mobile
6
Kitchen tools
33
Food presets
28K+
Uses this month
0$
Cost forever

All Kitchen Calculators

6 tools
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Egg Substitute for Baking
Find the best egg substitute for any baking recipe. Vegan, allergy-friendly options with exact ratios and usage notes.
Used 8,600 times this month
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Recipe Scaling Calculator
Scale any recipe up or down instantly. Enter your servings and every ingredient adjusts automatically.
Used 5,400 times this month
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Tablespoons to ml Converter
Convert tablespoons, teaspoons and cups to ml and back. Supports US, UK and metric measurements.
Used 5,400 times this month
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Restaurant Calorie Calculator
Estimate calories for restaurant meals. Build your plate from common dishes and get a quick nutrition breakdown.
Used 5,400 times this month
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Egg Substitute for Cake
Find the perfect egg replacement for cakes and sponges. Covers moisture, binding and leavening needs separately.
Used 5,400 times this month

Why use a free kitchen calculator?

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Why use an air fryer converter?

Air fryers circulate heat far more efficiently than conventional ovens. Without adjusting the temperature and time, food can easily overcook or burn. Our converter applies the standard −25°F / −20% time rule automatically — plus brand-specific tweaks for Ninja, Cosori, Philips and more.

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When to use ingredient substitutes

Ran out of buttermilk? Need a vegan egg replacement? Our substitute finder covers 80+ ingredients with exact ratios and notes on how the swap affects flavour and texture. Great for dietary restrictions, mid-recipe emergencies, and reducing food waste.

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Converting between cooking methods

Slow cookers, instant pots, air fryers, and ovens all cook at very different speeds. Our cooking time converter translates between any two methods — so you can adapt any recipe to whatever appliance you have available, without guessing.

FAQ

Kitchen calculator questions

Everything you need to know about our free kitchen tools — answered.

Reduce the temperature by 25°F (about 15°C) and reduce the cooking time by 20%. So a recipe at 400°F for 30 minutes becomes 375°F for 24 minutes. Always check food 2–3 minutes before the timer ends, as every air fryer model differs slightly.
Yes. A convection oven already uses a fan to circulate heat, making it more similar to an air fryer. When converting from a convection oven, only reduce temperature by 10°F (5°C) and time by around 15% instead of 20%.
Reduce the temperature by 25°F from the oven instructions, then add 25% extra time compared to fresh food. Toggle Frozen food mode in the air fryer calculator for the auto-adjusted time. Always verify that frozen food reaches a safe internal temperature before serving.
Most dairy products, eggs, and flour have well-established substitutes. Buttermilk can be replaced with milk + vinegar (1:1). Eggs can be swapped with flax eggs or applesauce. All-purpose flour can be replaced with almond flour (use 1:1 but expect denser results). Our ingredient substitute finder covers exact ratios for 80+ ingredients.
A slow cooker recipe on LOW (8 hours) typically converts to about 1.5–2 hours at 325°F / 160°C in the oven. On HIGH (4–5 hours), the oven equivalent is around 1–1.5 hours at 325°F. Use our cooking time converter to get an exact figure for your specific recipe and method.
Community requests

Missing a kitchen tool?

We build new calculators every week based on what our community asks for. Recipe scaler, unit converter, baking timer — tell us what you need.

No account needed · always free
Community wish list: Recipe scaler Baking converter Meal prep timer Portion calculator Nutrition estimator