Developer Utilities
Small developer utilities that save a trip to a random website. Encode and decode Base64, explain a regex, build UTM links, generate QR codes and vCards, and more — the everyday helpers. Free in your browser, and available by API when you need them in a script.
Developer Utilities
Quantize a color to the nearest palette entry
POST /color/quantize-to-palette$0.002Developer Utilities
Quantile color scale buckets
map numbers to colors
POST /color/scale-buckets$0.002Developer Utilities
Spot to process approximation
CMYK recipe from RGB with Delta E
POST /color/spot-to-process$0.002Developer Utilities
Under-color removal calculator for CMYK ink reduction
POST /color/ucr$0.002Developer Utilities
Color and complement distance
perceptual harmony strength
POST /color/complement-distance$0.002Developer Utilities
Is color light or dark
perceived brightness for overlay text, free
POST /color/is-light-or-dark$0.002Developer Utilities
Validate hex color
check 3, 4, 6, or 8 digit codes
POST /color/is-valid-hex$0.002Developer Utilities
Lightest color in a list
WCAG relative luminance, free
POST /color/lightest-in-list$0.002Developer Utilities
Sort colors by luminance
darkest to lightest hex palette
POST /color/sort-by-luminance$0.002Developer Utilities
Warm or cool color checker by hue angle
POST /color/warm-or-cool$0.002Developer Utilities
HWB to CMYK converter
print ink percentages free online
POST /color/hwb-cmyk$0.002Developer Utilities
Color palette contrast matrix
audit every WCAG color pair
POST /color/palette-contrast-matrix$0.002Developer Utilities
Caster sugar cups to grams converter
superfine sugar by density, free
POST /cook/caster-sugar-cups-to-grams$0.002Developer Utilities
Chocolate chips cups to grams converter
POST /cook/chocolate-chips-cups-to-grams$0.002Developer Utilities
Maple syrup cups to grams converter
fixed kitchen conversion
POST /cook/maple-syrup-cups-to-grams$0.002Developer Utilities
Whole Milk Cups to Grams Converter
POST /cook/whole-milk-cups-to-grams$0.002Developer Utilities
Whole wheat flour cups to grams converter
POST /cook/whole-wheat-flour-cups-to-grams$0.002Developer Utilities
Brown sugar grams to cups converter
packed brown sugar by density, free
POST /cook/brown-sugar-grams-to-cups$0.002Developer Utilities
Cake flour grams to cups converter
quick US cup conversion
POST /cook/cake-flour-grams-to-cups$0.002Developer Utilities
Greek yogurt cups to grams converter
fixed density, free
POST /cook/greek-yogurt-cups-to-grams$0.002Developer Utilities
Honey tablespoons to grams converter
quick fixed conversion
POST /cook/honey-tbsp-to-grams$0.002Developer Utilities
Salt teaspoons to grams converter
fixed 6 g per tsp
POST /cook/salt-tsp-to-grams$0.002Developer Utilities
Vanilla extract teaspoons to grams converter
fixed tsp mass, free
POST /cook/vanilla-extract-tsp-to-grams$0.002Developer Utilities
Bundt pan volume estimator
calculate batter capacity
POST /cook/bundt-pan-volume$0.002Developer Utilities
Butter sticks to grams converter
quick US butter conversion
POST /cook/butter-sticks-to-grams$0.002Developer Utilities
Celsius to Gas Mark Converter
British Oven Settings
POST /cook/celsius-to-gas-mark$0.002Developer Utilities
Round cake pan area calculator
base area from diameter, free
POST /cook/round-pan-area$0.002Developer Utilities
Square to round pan size converter
match batter capacity by area
POST /cook/square-to-round-pan$0.002Developer Utilities
Tablespoons to fluid ounces converter
exact US factor, free
POST /cook/tbsp-to-fl-oz$0.002Developer Utilities
High-altitude liquid adjuster for baking
fixed formula
POST /cook/altitude-liquid$0.002Developer Utilities
High-Altitude Oven Temperature Adjuster
POST /cook/altitude-temp-adjust$0.002Developer Utilities
Cake batter depth calculator
volume ÷ pan base area
POST /cook/batter-depth$0.002Developer Utilities
Double a recipe calculator
double ingredient quantity for a larger batch
POST /cook/recipe-double$0.002Developer Utilities
Tube pan volume calculator
batter capacity from pan dimensions
POST /cook/tube-pan-volume$0.002Developer Utilities
Active dry to instant yeast converter
fixed 0.75 factor, free
POST /cook/active-to-instant-yeast$0.002Developer Utilities
Baker's percentage to weight calculator
flour % to grams
POST /cook/bakers-pct-to-weight$0.002Developer Utilities
Dough weight per piece calculator for rolls and loaves
POST /cook/dough-per-piece$0.002Developer Utilities
Scale recipe from ingredient on hand
free calculator
POST /cook/leftover-scale$0.002Developer Utilities
Sourdough levain build calculator
flour and water amounts
POST /cook/levain-calculator$0.002Developer Utilities
Yeast amount from flour weight calculator by rise speed
POST /cook/yeast-amount-by-flour$0.002Developer Utilities
Béchamel sauce ratio calculator
butter, flour and milk
POST /cook/bechamel-ratio$0.002Developer Utilities
Brown sugar substitute calculator
white sugar + molasses by weight
POST /cook/brown-sugar-sub$0.002Developer Utilities
Buttermilk substitute calculator
milk and acid amounts for any volume
POST /cook/buttermilk-substitute$0.002Developer Utilities
Caramel sugar-to-cream ratio calculator
cream & butter from sugar weight
POST /cook/caramel-ratio$0.002Developer Utilities
Choux pastry ratio calculator
scale water, butter, flour and eggs
POST /cook/choux-ratio$0.002Developer Utilities
Dark chocolate ganache ratio calculator
cream weight 1:1 from chocolate
POST /cook/ganache-dark-ratio$0.002Developer Utilities
Pizza dough ratio calculator
flour, water, salt & yeast from balls
POST /cook/pizza-dough-ratio$0.002Developer Utilities
Swiss Meringue Buttercream Ratio Calculator
POST /cook/swiss-buttercream$0.002Developer Utilities
Dried to Fresh Herb Converter
Calculate the 1:3 Ratio
POST /cook/dried-fresh-herb$0.002Developer Utilities
Chicken roasting time by weight calculator
POST /cook/roast-chicken-time$0.002Developer Utilities
Ham heating time by weight calculator
minutes per pound by type
POST /cook/roast-ham-time$0.002Developer Utilities
Sour Cream Substitute Calculator
Yogurt or Cream and Acid
POST /cook/sour-cream-sub$0.002Developer Utilities
Vegetable blanching time lookup
minutes by vegetable type
POST /cook/blanch-time$0.002Developer Utilities
Beef steak doneness temperature lookup
rare to well done internal temps
POST /cook/doneness-temp-beef$0.002Developer Utilities
Boiled egg time by size and doneness calculator
POST /cook/egg-boil-time$0.002Developer Utilities
Sous-vide chicken time by thickness calculator
POST /cook/sousvide-chicken-time$0.002Developer Utilities
Sous Vide Poultry Pasteurization Time Calculator
POST /cook/sousvide-pasteurize$0.002Developer Utilities
Turkey thaw time by weight calculator
refrigerator hours from pounds
POST /cook/turkey-thaw-time$0.002Developer Utilities
Vegetable ferment salt calculator
salt from veg, water & %
POST /cook/fermentation-salt$0.002Developer Utilities
Grain to water ratio lookup
quinoa, barley, farro and more
POST /cook/grain-water-ratio$0.002