Cups to grams for 271 ingredients with USDA and King Arthur densities, recipe scaling, oven temps.
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Converts a kitchen amount between volume and weight for a specific ingredient, using measured grams-per-cup values (USDA FoodData Central portion weights with FDC ids, and the King Arthur Baking ingredient weight chart) instead of guessed densities. 271 ingredients. Units: US cup (236.5882365 mL), metric cup (250 mL), imperial cup, US legal cup (240 mL), Japanese cup, US/metric/Australian tablespoons, teaspoons, US and imperial fl oz, pints, quarts, gallons, mL, dL, L, g, mg, kg, oz, lb and sticks of butter. Volume to volume and weight to weight need no ingredient. States which cup definition it used and cites the density source.
Quantity to convert, e.g. 1.5. Use decimals for fractions (3/4 = 0.75).
Unit to convert to, e.g. g, oz, cup, ml.
Unit to convert from, e.g. cup, us_cup, metric_cup, tbsp, tsp, fl oz, ml, l, g, oz, lb, stick.
Which cup and spoon family the bare words cup, tbsp, tsp, fl oz and pint mean. us = 236.588 mL cup (default), metric = 250 mL cup with 15/5 mL spoons, imperial = 284.13 mL cup with UK pints. Explicit units such as metric_cup always win.
Ingredient name, e.g. "all-purpose flour", "brown sugar", "honey". Required when converting between volume and weight.
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
claude mcp add --transport http cups-to-grams-mcp https://cups-to-grams-mcp.lipmichal.workers.dev/mcp
Converts a kitchen amount between volume and weight for a specific ingredient, using measured grams-per-cup values (USDA FoodData Central portion weights with FDC ids, and the King Arthur Baking ingredient weight chart) instead of guessed densities. 271 ingredients. Units: US cup (236.5882365 mL), metric cup (250 mL), imperial cup, US legal cup (240 mL), Japanese cup, US/metric/Australian tablespoons, teaspoons, US and imperial fl oz, pints, quarts, gallons, mL, dL, L, g, mg, kg, oz, lb and sticks of butter. Volume to volume and weight to weight need no ingredient. States which cup definition it used and cites the density source.
| Argument | Type | Description |
|---|---|---|
| amount* | number | Quantity to convert, e.g. 1.5. Use decimals for fractions (3/4 = 0.75). |
| to_unit* | string | Unit to convert to, e.g. g, oz, cup, ml. |
| from_unit* | string | Unit to convert from, e.g. cup, us_cup, metric_cup, tbsp, tsp, fl oz, ml, l, g, oz, lb, stick. |
| cup_system | string | Which cup and spoon family the bare words cup, tbsp, tsp, fl oz and pint mean. us = 236.588 mL cup (default), metric = 250 mL cup with 15/5 mL spoons, imperial = 284.13 mL cup with UK pints. Explicit units such as metric_cup always win. |
| ingredient | string | Ingredient name, e.g. "all-purpose flour", "brown sugar", "honey". Required when converting between volume and weight. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"amount",
"from_unit",
"to_unit"
],
"properties": {
"amount": {
"type": "number",
"maximum": 1000000,
"minimum": 0,
"description": "Quantity to convert, e.g. 1.5. Use decimals for fractions (3/4 = 0.75)."
},
"to_unit": {
"type": "string",
"maxLength": 30,
"minLength": 1,
"description": "Unit to convert to, e.g. g, oz, cup, ml."
},
"from_unit": {
"type": "string",
"maxLength": 30,
"minLength": 1,
"description": "Unit to convert from, e.g. cup, us_cup, metric_cup, tbsp, tsp, fl oz, ml, l, g, oz, lb, stick."
},
"cup_system": {
"enum": [
"us",
"metric",
"imperial"
],
"type": "string",
"description": "Which cup and spoon family the bare words cup, tbsp, tsp, fl oz and pint mean. us = 236.588 mL cup (default), metric = 250 mL cup with 15/5 mL spoons, imperial = 284.13 mL cup with UK pints. Explicit units such as metric_cup always win."
},
"ingredient": {
"type": "string",
"maxLength": 80,
"description": "Ingredient name, e.g. \"all-purpose flour\", \"brown sugar\", \"honey\". Required when converting between volume and weight."
}
}
}Converts an oven setting between Fahrenheit, Celsius and UK gas mark (1/4 to 10, from the standard recipe table) and optionally adjusts for a fan (convection) oven by 20 C, the manufacturer guidance. Returns the nearest gas mark and whether it is an exact table value.
| Argument | Type | Description |
|---|---|---|
| fan | string | Fan oven adjustment. Default none. |
| value* | number | Temperature or gas mark, e.g. 350, 180 or 4. |
| from_scale* | string | Scale of value: F, C or gas (gas mark). |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"value",
"from_scale"
],
"properties": {
"fan": {
"enum": [
"none",
"conventional_to_fan",
"fan_to_conventional"
],
"type": "string",
"description": "Fan oven adjustment. Default none."
},
"value": {
"type": "number",
"description": "Temperature or gas mark, e.g. 350, 180 or 4."
},
"from_scale": {
"enum": [
"F",
"C",
"gas"
],
"type": "string",
"description": "Scale of value: F, C or gas (gas mark)."
}
}
}Scales a list of recipe ingredient lines ("1 1/2 cups all-purpose flour", "2 tbsp honey", "3 eggs") by a factor or from original to target servings. Parses mixed numbers and fraction characters. With to_metric_weights, converts cup and spoon amounts to grams with the measured density table and weights to grams, and reports lines it could not match.
| Argument | Type | Description |
|---|---|---|
| lines* | array | Ingredient lines, one per item, quantity first. |
| factor | number | Multiply every quantity by this, e.g. 2 or 0.5. Or give servings instead. |
| cup_system | string | Which cup and spoon family the bare words cup, tbsp, tsp, fl oz and pint mean. us = 236.588 mL cup (default), metric = 250 mL cup with 15/5 mL spoons, imperial = 284.13 mL cup with UK pints. Explicit units such as metric_cup always win. |
| target_servings | number | Servings you want. |
| original_servings | number | Servings the recipe makes now. |
| to_metric_weights | boolean | Also give grams for each line. Default false. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"lines"
],
"properties": {
"lines": {
"type": "array",
"items": {
"type": "string",
"maxLength": 200,
"minLength": 1
},
"maxItems": 60,
"minItems": 1,
"description": "Ingredient lines, one per item, quantity first."
},
"factor": {
"type": "number",
"maximum": 100,
"description": "Multiply every quantity by this, e.g. 2 or 0.5. Or give servings instead.",
"exclusiveMinimum": 0
},
"cup_system": {
"enum": [
"us",
"metric",
"imperial"
],
"type": "string",
"description": "Which cup and spoon family the bare words cup, tbsp, tsp, fl oz and pint mean. us = 236.588 mL cup (default), metric = 250 mL cup with 15/5 mL spoons, imperial = 284.13 mL cup with UK pints. Explicit units such as metric_cup always win."
},
"target_servings": {
"type": "number",
"maximum": 1000,
"description": "Servings you want.",
"exclusiveMinimum": 0
},
"original_servings": {
"type": "number",
"maximum": 1000,
"description": "Servings the recipe makes now.",
"exclusiveMinimum": 0
},
"to_metric_weights": {
"type": "boolean",
"description": "Also give grams for each line. Default false."
}
}
}Fuzzy search over the ingredient table (flours, sugars, fats, dairy, liquids, nuts, grains, fruit, produce). Returns canonical names, grams per US cup and per tablespoon, and the source (USDA FDC id or King Arthur Baking chart). Use it to pick the exact ingredient before converting.
| Argument | Type | Description |
|---|---|---|
| limit | integer | Maximum results. Default 10. |
| query* | string | Ingredient name or part of it, e.g. "flour", "confectioners sugar", "oats". |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"query"
],
"properties": {
"limit": {
"type": "integer",
"maximum": 25,
"minimum": 1,
"description": "Maximum results. Default 10."
},
"query": {
"type": "string",
"maxLength": 80,
"minLength": 1,
"description": "Ingredient name or part of it, e.g. \"flour\", \"confectioners sugar\", \"oats\"."
}
}
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Oct 30, 2026.