Cups to Grams

io.github.theluckystrike由 GitHub 账号 theluckystrike 发布v1.0.0更新于 Nov 6, 2026

Cups to grams for 271 ingredients with USDA and King Arthur densities, recipe scaling, oven temps.

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概览

AI 生成的概览

按 271 种食材在杯、勺与克之间换算烹饪用量，可缩放食谱配料行并换算烤箱温度。

可以做什么
  • 按名称模糊搜索食材表，查看每杯和每汤匙的克数及数据来源
  • 在指定食材的体积与重量单位之间换算，涵盖公制、英制、日本杯以及黄油条
  • 按倍数或从原份数到目标份数缩放食谱配料行，可选为每行给出克数
  • 在华氏、摄氏与燃气档位之间换算烤箱设定，并可选择做风扇烤箱调整
适用场景
适合需要依据实测食材重量回答烘焙与烹饪问题的场景，例如把食谱中的杯数换成克数、按份数缩放食谱，或在不同地区之间换算烤箱温度。
运行要求
使用托管端点无需安装，也不需要登录或令牌。另提供基于 npx 包的本地 stdio 版本，需要 Node.js。远程端点需要网络访问。
安装前请注意
结果是参考值而非实测：干性体积按勺取刮平估算，表内数值取整到克，模糊匹配可能选错食材，应核对返回的匹配名称。整颗鸡蛋等按个数计量的食材不做体积换算。风扇烤箱建议只是经验法则。

安装

在 SourceWeft 中

  1. 打开 控制台中的 Cups to Grams，将其添加到工作区。
  2. 为需要使用其工具的对话启用该服务。

Web executable，通过 Streamable HTTP。 远程服务在工作区中配置后即可从网页运行时运行。

交给智能体安装

把这段提示词粘贴到 Claude Code、Codex、Cursor 等智能体，或 SourceWeft 对话中。智能体会读取该服务器的安装指南，先向你展示发布者、端点和登录方式，经你同意后再把它添加到你的客户端。密钥不会写进任何命令。

阅读 https://sourceweft.com/mcp/io.github.theluckystrike%2Fcups-to-grams-mcp/install.md，并按其中说明把这个 MCP 服务器接入我的客户端。修改任何配置之前，先告诉我它的发布者、端点和登录方式，等我确认。不要把 API 密钥写进命令或我会提交的文件；问我密钥应从哪里获取。

查看智能体所依据的安装指南

其他 MCP 客户端

把它添加到你客户端的 mcpServers 配置中。

{
  "mcpServers": {
    "cups-to-grams": {
      "type": "http",
      "url": "https://cups-to-grams-mcp.lipmichal.workers.dev/mcp"
    }
  }
}

README

Cups to Grams MCP

Ingredient-aware cups to grams for AI assistants, using measured grams per cup from USDA FoodData Central and the King Arthur Baking weight chart instead of guessed densities.

Hosted MCP URL (no sign-in, no token): https://cups-to-grams-mcp.lipmichal.workers.dev/mcp

Converters and recipe tools on the web: ingredientcalculator.com

Tools

ToolWhat it does
convert_ingredientConverts an amount between volume and weight for a named ingredient (cup, tbsp, tsp, fl oz, mL, L to g, oz, lb and back). Supports US, metric, imperial, US legal and Japanese cups, US, metric and Australian spoons, sticks of butter. Says which cup it used and cites the density source.
search_ingredientsFuzzy search over 271 ingredients. Returns canonical names, grams per US cup and per tablespoon, and the source (USDA FDC id or King Arthur chart).
scale_recipeScales ingredient lines by a factor or from one servings count to another. Parses mixed numbers and fraction characters. Optionally gives grams for every line.
convert_oven_temperatureFahrenheit, Celsius and gas mark (1/4 to 10), with a 20 C fan oven adjustment.

Every result has structured JSON, a one-paragraph summary, an as_of date, a source URL and a more link to the matching ingredientcalculator.com page.

What it knows that your model does not

  • Measured weights. A cup of all-purpose flour is 120 g, granulated sugar 200 g, butter 227 g, honey 339 g, water 237 g. Models often apply one density to everything or mix up fluid ounces and weight ounces. Each of the 271 rows carries its source, and USDA rows carry the FDC id.
  • Which cup. A US cup is 236.5882365 mL, a metric cup 250 mL, an imperial cup 284.13 mL, the US nutrition-label cup 240 mL and a Japanese cup 200 mL. A 1 cup of flour in an Australian recipe is about 127 g, not 120 g. The server states the cup it used.
  • Exact unit constants. US units come from the US gallon of 231 cubic inches (NIST SP 811). Imperial units come from the UK Weights and Measures Act 1985 (gallon = 4.54609 L). The pound is exactly 453.59237 g.
  • Where published tables disagree. For 23 ingredients USDA and King Arthur differ by more than 5% (cornstarch, bread flour, oats, baking soda and others). The result names the value used and lists the other published value, so the user can see the spread.

Install

Claude.ai custom connector, ChatGPT developer mode

Paste this URL as a custom connector. No token or sign-in.

https://cups-to-grams-mcp.lipmichal.workers.dev/mcp

Claude Code

claude mcp add --transport http cups-to-grams https://cups-to-grams-mcp.lipmichal.workers.dev/mcp

Or run it locally over stdio:

claude mcp add cups-to-grams -- npx -y cups-to-grams-mcp

Claude Desktop

Add to claude_desktop_config.json:

json
{  "mcpServers": {    "cups-to-grams": {      "command": "npx",      "args": ["-y", "cups-to-grams-mcp"]    }  }}

Cursor

Add to ~/.cursor/mcp.json:

json
{  "mcpServers": {    "cups-to-grams": { "url": "https://cups-to-grams-mcp.lipmichal.workers.dev/mcp" }  }}

VS Code

Add to .vscode/mcp.json:

json
{  "servers": {    "cups-to-grams": { "type": "http", "url": "https://cups-to-grams-mcp.lipmichal.workers.dev/mcp" }  }}

Test with curl

curl -s -X POST https://cups-to-grams-mcp.lipmichal.workers.dev/mcp \  -H 'content-type: application/json' -H 'accept: application/json, text/event-stream' \  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"convert_ingredient","arguments":{"amount":1,"from_unit":"cup","to_unit":"g","ingredient":"all-purpose flour"}}}'

Example prompts

  • "How many grams is 3/4 cup of brown sugar?"
  • "Convert 250 g of bread flour to cups."
  • "This Australian recipe says 2 cups plain flour. How many grams is that?"
  • "Double this recipe and give me grams: 1 1/2 cups flour, 1/2 cup sugar, 2 tbsp honey, 1 stick butter."
  • "Scale this recipe from 4 servings to 10."
  • "What is gas mark 6 in Fahrenheit, and what should I set a fan oven to?"

How it converts

  • Density in g per mL = grams per US cup / 236.5882365.
  • Volume to weight = amount x unit mL x density. Weight to volume is the reverse.
  • Volume to volume and weight to weight use the unit constants only.
  • A stick of butter is 1/4 lb (113.398 g), which USDA lists as 113 g and 1/2 cup.
  • Gas marks follow the standard recipe table (gas mark 4 = 350 F = 180 C). Fan ovens are set 20 C lower, per oven maker guidance.

27 test fixtures check unit constants and table values. The expected values come from scripts/expected.py, which works from the unit definitions and the published table values, not from the server code.

Data sources

See DATA_SOURCES.md. In short, densities come from USDA FoodData Central SR Legacy portion weights (FDC ids per row) and the King Arthur Baking ingredient weight chart, both fetched on 2026-10-30. The table is rebuilt by scripts/build_data.py.

Limitations

  • Volume measures vary with how you fill the cup. Dry values assume spoon-and-level filling. Scooping flour from the bag can add 30 g or more per cup. Weigh when it matters.
  • Table values are whole grams per cup, so results carry about plus or minus 0.5 g per cup of rounding. King Arthur rows given per tablespoon or teaspoon are coarser.
  • Whole eggs and other count items are not converted by volume. A large egg is about 50 g.
  • Ingredient matching is fuzzy. Check the matched name in the result, or use search_ingredients first.
  • Fan oven guidance is a rule of thumb. Oven calibration varies.

Development

npm installnpm run buildnpm testnpx wrangler deploy

src/core.ts holds the pure conversion logic and src/data.ts the generated density table. src/stdio.ts and src/worker.ts are thin entries over the same tool registry in src/tools.ts.

License

MIT

Part of the Zovo MCP collection: https://mcp.zovo.one

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来源：README.md，提交 0ed154d

工具

4

convert_ingredient

Convert cups to grams for a named ingredient

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.

输入参数amount必填to_unit必填from_unit必填cup_systemingredient

search_ingredients

Search the measured ingredient density table

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.

输入参数limitquery必填

scale_recipe

Scale a recipe and convert it to grams

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.

输入参数lines必填factorcup_systemtarget_servingsoriginal_servingsto_metric_weights

convert_oven_temperature

Convert oven temperature between F, C and gas mark

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.

输入参数fanvalue必填from_scale必填

版本历史

1
  1. v1.0.0最新Oct 30, 2026

评分

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  • 图标10 分
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