happytails.ai

Sourdough hydration calculator

Open Sourdough hydration calculator on Happytails.ai. This view has the same page content and links, with explicit tool capabilities. Read the processing notes before using a tool.

Tool capabilities

{
  "id": "sourdough-hydration-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Starter is treated as flour and water only. Water in eggs, dairy and other ingredients is not inferred. Negative required added water is rejected.",
  "implementation": {
    "fields": [
      {
        "key": "mode",
        "label": "Calculate",
        "value": "Measure existing dough",
        "type": "select",
        "values": [
          "Measure existing dough",
          "Reach target hydration"
        ]
      },
      {
        "key": "flour",
        "label": "Flour added outside the starter",
        "value": 500,
        "type": "number",
        "min": 0,
        "max": 100000000,
        "step": "any"
      },
      {
        "key": "water",
        "label": "Water added outside the starter",
        "value": 300,
        "type": "number",
        "min": 0,
        "max": 100000000,
        "step": "any",
        "showWhen": {
          "mode": [
            "Measure existing dough"
          ]
        }
      },
      {
        "key": "starter",
        "label": "Starter mass",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 100000000,
        "step": "any"
      },
      {
        "key": "starterHydration",
        "label": "Starter hydration (%)",
        "value": 100,
        "type": "number",
        "min": 0,
        "max": 500,
        "step": "any"
      },
      {
        "key": "targetHydration",
        "label": "Target overall hydration (%)",
        "value": 70,
        "type": "number",
        "min": 0,
        "max": 300,
        "step": "any",
        "showWhen": {
          "mode": [
            "Reach target hydration"
          ]
        }
      },
      {
        "key": "massUnit",
        "label": "Mass unit",
        "value": "g",
        "type": "select",
        "values": [
          "g",
          "kg",
          "oz",
          "lb"
        ]
      }
    ],
    "input": false,
    "live": true,
    "presentation": "metrics",
    "note": "Count starter flour and water in the overall hydration, or calculate separate water needed for a target. Other ingredients’ water is not inferred. Calculated on your device. Changing units keeps the entered numbers.",
    "experience": {
      "automatic": true,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.",
      "helpParts": [
        "Change the input or settings to update your result.",
        "Results update as you type.",
        "Up to 1,000,000 characters."
      ],
      "action": null
    },
    "mode": "automatic",
    "interactive": false
  },
  "execution": "Browser interface",
  "api": null,
  "browser_agent": {
    "supported": true,
    "name": "run_current_tool",
    "discovery": "WebMCP on the human page in a supporting browser",
    "verification": "See audit/API-AUDIT.md; availability is not verification"
  }
}

Page guide

Calculate overall hydration including your starter, or find the separate water needed for a target hydration.

How to use Sourdough hydration calculator
  1. Enter the measurements and assumptions for this recipe or plan.
  2. Review the calculated quantities and their stated basis.
  3. Download the report and verify it against your measured result.

Useful next steps

Count the starter contributions

A 100 g starter at 100% hydration contains 50 g flour and 50 g water. Added to 500 g flour and 300 g water, the overall dough is about 63.64% hydration.

Solve for the next mix

Switch to Reach target hydration to calculate added water while holding flour and starter fixed. At 70% in the example, add 335 g water outside the starter.

Save the result

Download CSV and a text or JSON report with the calculation and its assumptions. Processing stays on your device. Check measurements and selected units before using the result.