Kitchen Math, Solved.
20 free calculators for cooking, baking, and meal planning — built on USDA guidelines.
🔥Appliance Converters
🥩Cooking Time Calculators
🍰Baking Calculators
🍽️Recipe & Planning Tools
Recipe Scaler
Double, halve, or resize any recipe
💰Recipe Cost
Calculate cost per serving
📈Recipe Macros
Get calories and macros per serving
🎉Party Food
How much food for your guest count
📏Measurement Converter
Cups, grams, oz, ml + ingredient weights
🧈Butter Converter
Sticks, cups, grams, tablespoons
☕Coffee Ratio
Perfect ratios for any brew method
Why CalcKitchen?
Every home cook has been there: standing in the kitchen, phone in hand, trying to figure out how long to cook that 7-pound chicken or how to convert grandma's recipe from cups to grams. Kitchen math shouldn't require a culinary degree.
CalcKitchen was built to answer the everyday cooking questions that send millions of people searching online. Our 20 free calculators cover everything from air fryer conversions to sourdough hydration — each one designed to give you instant, accurate answers so you can get back to cooking.
We built these tools on authoritative sources: USDA food safety guidelines, FoodSafety.gov recommendations, and professional culinary standards. When you need to know the safe internal temperature for pork or how to scale a cake recipe for a different pan, you're getting answers backed by real data.
Quick Reference: USDA Safe Cooking Temperatures
Food safety starts with proper internal temperatures. Use a meat thermometer — it's the only reliable way to ensure food is safely cooked.
| Food | °F | °C | Notes |
|---|---|---|---|
| Poultry (chicken, turkey) | 165°F | 74°C | All parts including stuffing |
| Ground meats (beef, pork, lamb) | 160°F | 71°C | Burgers, meatloaf, sausages |
| Beef steaks & roasts | 145°F | 63°C | + 3 minute rest |
| Pork chops & roasts | 145°F | 63°C | + 3 minute rest |
| Fish & shellfish | 145°F | 63°C | Fish should flake easily |
| Ham (fresh or smoked) | 145°F | 63°C | + 3 minute rest |
| Egg dishes | 160°F | 71°C | Casseroles, quiches |
Source: USDA Food Safety and Inspection Service. See our complete meat temperature chart for detailed guidelines.
Appliance Converters: Cook Anything in Any Appliance
Modern kitchens have more cooking appliances than ever. Air fryers, convection ovens, slow cookers, Instant Pots — each cooks differently. Our appliance converters help you adapt any recipe to whatever equipment you have.
🍟Air Fryer Converter
Air fryers cook faster and hotter than conventional ovens because the circulating hot air creates a convection effect. The general rule: reduce temperature by 25°F and cut time by 20-25%.
Example:
Oven recipe: Chicken wings at 400°F for 40 minutes
Air fryer conversion: 375°F for 28-32 minutes, flip halfway through
📻Microwave to Oven Converter
Need to make that microwave recipe in the oven, or speed up an oven dish in the microwave? This converter handles the math, accounting for wattage differences and cooking method.
Example:
Microwave: Baked potato, 8 minutes at 1000W
Oven conversion: 60-75 minutes at 400°F (for crispy skin)
🍲Slow Cooker to Oven Converter
Convert between slow cooker, Dutch oven, and Instant Pot. Whether you're adapting a slow cooker recipe for faster oven cooking or vice versa, we calculate the right time and temperature.
Example:
Slow cooker: Beef stew, 8 hours on Low
Dutch oven: 3-3.5 hours at 325°F, covered
💨Convection Oven Converter
Convection ovens use a fan to circulate hot air, cooking food faster and more evenly. Most recipes need a 25°F reduction or 25% less cooking time.
Example:
Conventional: Cookies at 350°F for 12 minutes
Convection: 325°F for 10-11 minutes
🌡️Oven Temperature Converter
Convert between Fahrenheit, Celsius, and Gas Mark instantly. Essential for following recipes from different countries or using older cookbooks.
Example:
180°C = 356°F = Gas Mark 4 (moderate oven)
Cooking Time Calculators: Perfect Results Every Time
Cooking times depend on weight, thickness, starting temperature, and your desired doneness. Our calculators account for all these variables so you can cook meat, poultry, and fish confidently.
🥩Meat Cooking Time Calculator
Get precise cooking times for beef, pork, lamb, and more. Select your cut, enter the weight, choose your doneness level, and get an accurate time estimate with rest time included.
Example:
Input: 4 lb beef rib roast, medium-rare
Result: Roast at 325°F for 1 hour 40 minutes, rest 15 minutes (target internal temp: 135°F)
🦃Turkey Cooking Calculator
The most-used calculator during Thanksgiving. Calculate roasting time for stuffed or unstuffed turkey, plus thawing time, brine time, and even deep-frying instructions.
Example:
Input: 14 lb turkey, unstuffed, roasting
Result: 3-3.5 hours at 325°F, thaw 3-4 days in fridge, target 165°F in thickest part of thigh
🌡️Meat Temperature Chart
A quick-reference guide to USDA safe internal temperatures for all types of meat, poultry, and seafood. Includes both safety minimums and target temperatures for different doneness levels.
Example:
Medium-rare steak: 130-135°F (pull at 125°F for carryover cooking)
Medium steak: 135-145°F (pull at 130°F)
Oven Temperature Reference Chart
Common oven temperatures across Fahrenheit, Celsius, and Gas Mark scales:
| Description | °F | °C | Gas Mark |
|---|---|---|---|
| Very low / Warming | 250°F | 120°C | ½ |
| Low | 300°F | 150°C | 2 |
| Moderate | 350°F | 175°C | 4 |
| Moderately hot | 375°F | 190°C | 5 |
| Hot | 400°F | 200°C | 6 |
| Very hot | 450°F | 230°C | 8 |
| Extremely hot | 500°F | 260°C | 10 |
Need precise conversions? Use our oven temperature converter.
Baking Calculators: Precision for Perfect Bakes
Baking is chemistry. Small changes in proportions can mean the difference between a perfect loaf and a dense brick. Our baking calculators help you nail the math so you can focus on technique.
🎂Cake Servings Calculator
Planning a party? Calculate how many servings you'll get from any cake size and shape. Works for round, square, sheet cakes, and tiered wedding cakes.
Example:
Input: 9-inch round, 2 layers
Result: 24-32 party servings or 12-16 dessert portions
🍳Cake Pan Converter
Adapting a recipe for a different pan size? This calculator tells you exactly how to adjust batter amounts and baking times when switching between pan sizes and shapes.
Example:
Original: 9-inch round recipe
Converting to: 8-inch round → multiply batter by 0.79×, reduce bake time by 5-10 minutes
🍕Pizza Dough Calculator
Calculate exact dough amounts for Neapolitan, New York, Detroit, or Sicilian style pizzas. Set your hydration, ball weight, and number of pizzas to get precise ingredient amounts.
Example:
Input: 4 Neapolitan pizzas, 250g balls, 65% hydration
Result: 606g flour, 394g water, 18g salt, 1.2g yeast
🍞Sourdough Calculator
Master sourdough baking with our calculator for starter feeding ratios and bread recipes. Accounts for starter hydration and lets you scale to any loaf size.
Example:
Input: 900g loaf, 75% hydration, 20% starter
Result: 500g flour, 375g water, 100g starter, 10g salt
📊Baker's Percentage Calculator
Professional bakers use percentages to scale recipes and understand dough characteristics. Enter flour weight and percentages to get exact ingredient weights.
Example:
Input: 500g flour, 65% water, 2% salt, 1% yeast
Result: 500g flour, 325g water, 10g salt, 5g yeast
Baking Pan Volume Reference
Know your pan capacities to adapt recipes and avoid overflow:
| Pan Size | Volume (cups) | Volume (mL) | Best For |
|---|---|---|---|
| 8" round | 6 cups | 1.4 L | Layer cakes |
| 9" round | 8 cups | 1.9 L | Layer cakes |
| 8" × 8" square | 8 cups | 1.9 L | Brownies, bars |
| 9" × 13" rectangular | 14 cups | 3.3 L | Sheet cakes, casseroles |
| 9" × 5" loaf | 8 cups | 1.9 L | Quick breads, pound cakes |
| 10" tube/bundt | 12 cups | 2.8 L | Angel food, bundt cakes |
| 12-cup muffin tin | 3 cups total | 710 mL | Standard muffins, cupcakes |
Converting between pans? Use our cake pan converter for exact adjustments.
Recipe & Planning Tools: From Scaling to Costing
Whether you're doubling a recipe for a party, tracking macros, or budgeting your meal prep, these tools handle the calculations so you can focus on cooking.
⚖️Recipe Scaler
Double, halve, or scale any recipe to your exact needs. Enter original amounts and your target servings, and we'll calculate new quantities with smart rounding.
Example:
Original: Recipe serves 4, uses 1.5 cups flour
Scaling to: 10 servings → 3¾ cups flour
💰Recipe Cost Calculator
Calculate the true cost per serving of your recipes. Great for meal planning on a budget or pricing dishes for a catering business.
Example:
Input: Chicken stir-fry with rice (6 servings)
Result: $14.50 total, $2.42 per serving
📈Recipe Macro Calculator
Get estimated calories, protein, carbs, and fat per serving. Enter your ingredients and we'll calculate the nutritional breakdown.
Example:
Input: Overnight oats recipe (1 serving)
Result: 380 calories, 12g protein, 58g carbs, 11g fat
🎉Party Food Calculator
Hosting a gathering? Calculate how much food you need based on guest count, event type, and duration. Covers appetizers, mains, sides, and drinks.
Example:
Input: 30 guests, 3-hour cocktail party
Result: Plan 180-240 appetizer pieces (6-8 per person), 60-90 drinks
📏Cooking Measurement Converter
Convert between cups, tablespoons, ounces, grams, and milliliters. Includes ingredient-specific conversions because 1 cup of flour doesn't weigh the same as 1 cup of sugar.
Example:
Input: 2 cups all-purpose flour
Result: 250g / 8.8 oz
🧈Butter Converter
Convert butter between sticks, cups, tablespoons, grams, and ounces. No more guessing when a recipe calls for "3/4 stick" or "100g butter."
Example:
Input: 1 stick butter
Result: ½ cup = 8 tbsp = 113g = 4 oz
☕Coffee Ratio Calculator
Get the perfect coffee-to-water ratio for any brew method: pour over, French press, espresso, cold brew, and more. Adjust strength to your taste.
Example:
Input: French press, 4 cups, medium strength
Result: 56g coffee (about 8 tbsp) + 900ml water, steep 4 minutes
Common Cooking Measurement Conversions
Quick reference for volume conversions used in everyday cooking:
| US Volume | Tablespoons | Teaspoons | mL | Fluid oz |
|---|---|---|---|---|
| 1 cup | 16 tbsp | 48 tsp | 237 mL | 8 fl oz |
| ¾ cup | 12 tbsp | 36 tsp | 177 mL | 6 fl oz |
| ½ cup | 8 tbsp | 24 tsp | 118 mL | 4 fl oz |
| ⅓ cup | 5⅓ tbsp | 16 tsp | 79 mL | 2.7 fl oz |
| ¼ cup | 4 tbsp | 12 tsp | 59 mL | 2 fl oz |
| 1 tbsp | 1 tbsp | 3 tsp | 15 mL | 0.5 fl oz |
Need ingredient-specific weight conversions? Use our measurement converter.
Built on Authoritative Data
Every CalcKitchen calculator is built on data from trusted sources. We don't guess — we calculate based on the same standards used by professional kitchens and food safety experts.
Safe cooking temperatures, food handling standards, and nutritional data from USDA.gov.
Federal food safety recommendations for home cooks and food service.
Baking formulas, hydration ratios, and culinary techniques from professional sources.
Frequently Asked Questions
Are CalcKitchen calculators accurate?
Yes. All cooking time and temperature calculators are built on USDA guidelines and FoodSafety.gov recommendations. We use professional culinary standards for baking percentages, dough hydration, and recipe scaling. While individual results may vary based on your equipment, our calculators provide reliable starting points backed by authoritative data.
How do I convert oven recipes to air fryer?
Use our Air Fryer Converter: reduce the oven temperature by 25°F (about 15°C) and cut the cooking time by 20-25%. For example, a recipe calling for 400°F for 30 minutes becomes 375°F for 22-24 minutes in an air fryer. Always check for doneness a few minutes early.
What internal temperature should meat reach?
USDA safe minimum internal temperatures are: Poultry (chicken, turkey) 165°F (74°C); Ground meats 160°F (71°C); Beef, pork, lamb steaks and roasts 145°F (63°C) with 3-minute rest; Fish 145°F (63°C). Always use a meat thermometer to verify doneness.
How do I scale a recipe up or down?
Use our Recipe Scaler: enter your original recipe amounts and the desired serving multiplier. The calculator handles all conversions, including adjusting cooking times for larger batches. For baking, we recommend weighing ingredients for best results when scaling.
What is baker's percentage?
Baker's percentage expresses each ingredient's weight as a percentage of the total flour weight. Flour is always 100%. This professional system makes scaling recipes easy and helps you understand dough characteristics. For example, 65% hydration means 650g water per 1000g flour.
About CalcKitchen
CalcKitchen started with a simple question: why is it so hard to find quick, accurate answers to basic cooking math? You shouldn't need to scroll through a 2,000-word blog post to find out how long to cook a 5-pound chicken.
We built 20 calculators that give you instant answers. Type in your numbers, get your results. Each calculator is backed by USDA food safety guidelines, professional culinary standards, and real-world testing. No fluff, no ads before answers — just the information you need to cook with confidence.
Whether you're a home cook figuring out Thanksgiving turkey timing, a baker scaling a recipe for a different pan size, or a meal prepper calculating macros, CalcKitchen has a tool for you.
Have a suggestion for a new calculator? We'd love to hear from you. Get in touch.