About The Kitchen Calc

The Kitchen Calc was built for one reason: cooking math should be easy. Whether you're doubling grandma's cookie recipe or figuring out how much turkey to buy for 20 people, the last thing you want to do is pull out a calculator and start doing fractions in your head.

Our Mission

We make free, no-sign-up kitchen calculators that work great on your phone. Open the page, punch in your numbers, get your answer — and get back to cooking. That's it.

What We Offer

  • Recipe Servings Calculator — Scale any recipe up or down with fraction-friendly results.
  • Recipe Cost Calculator — Find total and per-serving cost of any recipe for meal planning or small businesses.
  • Air Fryer Converter — Convert oven recipes to air fryer with temperature and time adjustments.
  • Coffee Ratio Calculator — Perfect coffee-to-water ratios for pour over, French press, espresso, and more.
  • Sourdough Calculator — Starter feeding ratios, dough formulas, and hydration percentages with baker's math.
  • Yeast Calculator — Exact yeast amounts and conversions between active dry, instant, and fresh yeast.
  • Dough Hydration Calculator — Calculate or reverse-engineer dough hydration percentages.
  • Brine Calculator — Exact salt, sugar, and water amounts for brining turkey, chicken, pork, and more.
  • Sugar & Salt Concentration — Sugar percentage, salt content, and Brix for syrups, brines, and fermentations.
  • Kitchen Measurement Converter — Convert cups to grams, tablespoons to milliliters, and more with ingredient-specific density.
  • Baking Pan Size Converter — Adjust recipes between different pan sizes and shapes.
  • Oven Temperature Converter — Convert between Fahrenheit, Celsius, and gas marks.
  • Cooking Time Calculator — Adjust times for altitude, cooking method, meat doneness, and weight.
  • Food Safety Temperature Guide — USDA safe internal temperatures and the danger zone, for every food.
  • Ingredient Substitution Finder — Find tested substitutes for missing pantry staples.
  • BAC Calculator — Educational Blood Alcohol Content estimator based on drinks, weight, and time.
  • Printable Conversion Chart — Free printable kitchen cheat sheets: cups to grams, pan sizes, and more.

How We're Funded

The Kitchen Calc is supported by advertising. All tools remain free — there's no "premium" tier and we don't charge for anything. If you find the site helpful, sharing it with a fellow home cook is the best way to support us.

Our Values

  • No sign-ups. You shouldn't need an account to scale a recipe.
  • No data collection. Everything runs in your browser. We don't store your recipes or meal plans.
  • Mobile-first. Built for the kitchen counter, not the office desk.
  • US-focused. We default to the units American home cooks actually use.

Disclaimer

The calculators on this site provide estimates based on standard culinary ratios and USDA guidelines. They are for informational and entertainment purposes only. Results are not professional cooking, nutritional, or medical advice. Always use a food thermometer and follow food safety best practices.