4 tools
Cooking & Kitchen calculators
Cooking & Kitchen calculators: Scale recipes, compare pan sizes, dial in a coffee ratio and price a serving.
Scale ingredient quantities by a serving ratio, compare pan geometry separately and use actual package prices for cost. A quantity multiplier does not prescribe a safe process or baking time.
Recipe Scaling Calculator
Convert a recipe for four into a recipe for a crowd, one ingredient at a time.
Inputs: Servings in the recipe, Servings you want, Ingredient amount in the recipe
Open calculator →02Baking Pan Size Calculator
Swap the pan a recipe calls for without ending up with a thin or a doughy result.
Inputs: Original pan length (in), Original pan width (in), Original pan shape, New pan length (in), New pan width (in), New pan shape
Open calculator →03Coffee to Water Ratio Calculator
Repeat a good cup by weighing the coffee instead of guessing at scoops.
Inputs: Water (milliliters), Water-to-coffee ratio (1 : n)
Open calculator →04Recipe Cost Per Serving Calculator
Price a dish for a menu, a bake sale or a weekly meal-prep budget.
Inputs: Total ingredient cost, Servings, Overhead added
Open calculator →Cooking & Kitchen calculator results and examples
| Calculator | What it answers | Headline output | Worked example |
|---|---|---|---|
| Recipe Scaling Calculator | Convert a recipe for four into a recipe for a crowd, one ingredient at a time. | Scaled ingredient amount | 3.8 |
| Baking Pan Size Calculator | Swap the pan a recipe calls for without ending up with a thin or a doughy result. | Recipe multiplier for the new pan | 0.55× |
| Coffee to Water Ratio Calculator | Repeat a good cup by weighing the coffee instead of guessing at scoops. | Ground coffee (grams) | 31.3 |
| Recipe Cost Per Serving Calculator | Price a dish for a menu, a bake sale or a weekly meal-prep budget. | Cost per serving | $4.08 |
Where people go wrong with cooking & kitchen numbers
An assumed recipe for four servings scaled to six uses multiplier 1.5. Two 8-inch square pans total 128 in² versus 117 in² for a 9-by-13-inch pan, so equal depth requires about 1.094 times the batter, not exact equivalence.
Cooking & Kitchen: related calculator categories
Common cooking & kitchen questions
Do I scale cooking time when I scale a recipe?
Not in proportion. Time depends on depth and thickness more than on total amount, so a double batch in a bigger pan may take a little longer, not twice as long. Check doneness by texture or temperature
Why does baking need more care when scaled than soup does?
Baking relies on ratios of flour, fat, sugar, leavening and liquid that set the structure, so errors show as a failed texture. Soup tolerates small changes and can be adjusted by taste at the end
Should I weigh ingredients or measure by volume?
Mass and volume measure different quantities. A cup-to-gram conversion needs the particular ingredient’s bulk density and how it is packed. Use the recipe’s stated basis and a suitable scale when it specifies grams; do not assume that one cup of every ingredient has the same weight.
What is a good coffee to water ratio?
The ratio is a chosen brewing recipe, not a universal requirement. State whether it is coffee mass to water mass and whether water means the poured amount or the finished beverage. For an assumed 1:16 recipe, 20 g coffee pairs with 320 g water; changing extraction method or grind is a separate variable.
How do I swap a round pan for a square one?
Compare areas. A 9 inch round is about 64 square inches, close to an 8 inch square. Match the area, keep the batter at the same depth, and the recipe bakes about the same
Why does my cost per serving change from week to week?
Ingredient prices move and portions drift. Recalculate with the receipt total and the servings you got, not the recipe's printed yield
Do these calculators cover food safety?
No. They cover quantities and costs. For cooking and leftovers, follow the safe internal temperatures and storage times from your food safety authority
Can I double any recipe?
Most recipes double fine, but baking recipes and seasonings need care, and cooking times and pan sizes must be adjusted
What pan can I use instead of a 9 by 13?
A 9-inch round holds about half as much, and two 8-inch squares hold about the same area, so use the pan size calculator to scale
What is the standard coffee to water ratio?
About 1 gram of coffee to 16 grams of water, and you can adjust between 1:15 and 1:18 to taste