Kitchen Math Made Simple

Free calculators for home cooks. Scale recipes, convert cooking times for altitude, and plan your holiday dinners. No sign-up. No clutter. Just answers.

Scale a Recipe Plan a Holiday Meal

Our Free Kitchen Calculators

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Recipe Servings Calculator

Scale any recipe up or down in seconds. Enter your ingredients, original servings, and target servings. We handle the fractions.
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Cooking Time Calculator

Adjust cooking times for altitude, different cooking methods, meat doneness, and weight. Works with Fahrenheit and pounds.
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Holiday Meal Planner

Plan the perfect Thanksgiving, Christmas, or Easter dinner. Get exact amounts for turkey, ham, sides, desserts, and drinks.
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Kitchen Measurement Converter

Convert cups to grams, tablespoons to milliliters, ounces to cups. Includes ingredient-specific density for flour, sugar, butter, and more.
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Baking Pan Size Converter

Convert recipes between different pan sizes and shapes. Round to square, 8-inch to 9-inch — get the exact ingredient multiplier.
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Oven Temperature Converter

Convert between Fahrenheit, Celsius, and gas marks instantly. Includes a cooking temperature guide for roasting, baking, and broiling.
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Ingredient Substitution Finder

Missing an ingredient? Find tested substitutes for buttermilk, eggs, flour, brown sugar, butter, and dozens of other pantry staples.

Why The Kitchen Calc?

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Mobile-Friendly

Designed for your phone. Use it right in the kitchen — big buttons, easy scrolling, no zooming required.

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US-Centric

Built for American home cooks. Fahrenheit, pounds, cups, tablespoons — the units you actually use.

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No Sign-Up

Just open the page and start calculating. We don't collect your email, and we never will.

Frequently Asked Questions

Is this website really free?
Yes, 100% free. We support the site with advertising. No paywalls, no "pro" subscriptions, no sign-ups required. Just free calculators for home cooks.
Do you save my recipes or meal plans?
No. Everything runs in your browser. We don't store, save, or even see the recipes and meal plans you create. Your data stays on your device.
Are the calculations accurate?
Our calculators use standard culinary ratios and USDA guidelines. They provide reliable estimates, but always use your own judgment and a food thermometer when cooking. Baking, in particular, can be sensitive to scaling — test large batch changes cautiously.
Do you support units used outside the US?
Most of our calculators support both US customary units (cups, pounds, Fahrenheit) and metric units (grams, milliliters, Celsius). We default to US units because our audience is primarily American home cooks.

Ready to cook?

Pick a calculator above and get started. No account needed — ever.