Olutil stands for Online Utilities — a growing suite of privacy-first, browser-native web tools. This sub-site brings home cooks and bakers a focused set of kitchen calculators that run entirely in your browser. Convert volumes and oven temperatures, and scale recipes up or down — all in one place. 100% Local Processing
Convert cooking volumes between cups, millilitres, fluid ounces, tablespoons, teaspoons, pints, quarts and gallons.
Convert cooking weights between grams, kilograms, ounces, pounds, Chinese jin and liang, and cups by ingredient.
Scale one ingredient to a new number of servings and switch between cups, spoons and grams by density.
Convert cooking temperatures between Celsius, Fahrenheit and Kelvin, with common reference points.
Convert oven temperatures between Celsius, Fahrenheit and gas mark, with a common baking temperature chart.
Compare round, square and rectangular pans by area and volume, and find the recipe multiplier for a new tin.
Scale a recipe for more or fewer servings, or by any multiplier, keeping each ingredient unit unchanged.
Scale a whole recipe from one baking pan size to another, with each ingredient adjusted by the pan ratio.
Scale a recipe so its total weight or a reference ingredient meets your target.
Convert between baker's percentages (flour = 100%) and ingredient weights.
Turn any recipe into percentages of the total that add up to 100%.
Estimate a dough fermentation window from dough temperature, yeast, flour and method.
Work out the flour and water to add when feeding a starter, from ratio and hydration.
Target internal temperatures for beef, pork, poultry and fish, with a rest time and a safety check.
Estimate thawing time in the fridge, cold water or microwave by weight and thickness.
Suggested marinating windows for meat, fish and vegetables, plus an upper limit.
Reference times for roast, fry, boil, steam and air-fry, with internal temperatures.
Estimate how long cooked food takes to cool, with the two-stage safety limits.
Reference room, fridge and freezer storage times for common foods.
Estimate calories, protein, fat, carbs, sugar and sodium for a portion.
Add up recipe calories and see the total and the amount per serving.
Add up the sugar in a recipe or drink, with a per-serving figure.
Convert between salt and sodium and see the share of a daily reference.
Work out the final strength of a drink after mixing a spirit and a mixer.
Convert between a sugar:water syrup ratio and Brix.
Scale a drink recipe to any number of servings, with numbered steps.
Find substitutes for everyday ingredients with approximate ratios.
Plan by days, meals and people, with a seed shopping list.
Merge a recipe or meal list into a grouped shopping list you can tick off.
Add up a recipe's cost from amount and price, and see the cost per serving.
All tools on this site perform their work locally in your browser. Your data is never sent to any server, so your recipes and measurements stay on your device. Pick a tool, fill in the options, click the run button and read or copy the output.
Yes. Volume and temperature conversions use standard US cooking units and exact formulas. Gas mark values are approximate, as oven charts round temperatures to the nearest few degrees.
No. Every tool works directly in your web browser using JavaScript. No plugins, extensions or software installation required.
Yes. All processing runs locally in your browser. The ingredients and measurements you enter are not uploaded to any server, and you can use the tools while offline once the page is loaded.