Bicycle gear calculator

Open Bicycle gear 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": "bicycle-gear-calculator",
  "category": "calculators",
  "built": true,
  "requirements": "Use 1 to 32 space-separated tooth counts per list, whole counts from 1 to 1000, circumference from 100 to 10000 mm, cadence from 0 to 300 RPM and target speed from 0 to 2000 in the selected unit. Up to 1024 combinations. Decimal inputs allow up to six places. These are software bounds, not vehicle capability claims. Results use floating-point arithmetic. Processing stays on your device, with a bounded worker and a 10-second timeout. Full JSON and CSV preserve every calculated row and the assumptions. Do not use thousands separators.",
  "implementation": {
    "fields": [
      {
        "key": "chainrings",
        "label": "Chainring teeth, separated by spaces",
        "value": "34 50",
        "type": "text",
        "maxLength": 512
      },
      {
        "key": "sprockets",
        "label": "Sprocket teeth, separated by spaces",
        "value": "11 13 15 17 19 21 24 28 32",
        "type": "text",
        "maxLength": 512
      },
      {
        "key": "circumferenceMm",
        "label": "Rolling wheel circumference (mm)",
        "value": "2100",
        "type": "text",
        "inputMode": "decimal",
        "maxLength": 24
      },
      {
        "key": "cadenceRpm",
        "label": "Pedaling cadence (RPM)",
        "value": "90",
        "type": "text",
        "inputMode": "decimal",
        "maxLength": 24
      },
      {
        "key": "targetSpeed",
        "label": "Target road speed",
        "value": "25",
        "type": "text",
        "inputMode": "decimal",
        "maxLength": 24
      },
      {
        "key": "speedUnit",
        "label": "Speed unit",
        "value": "km/h",
        "type": "select",
        "values": [
          "km/h",
          "mph"
        ],
        "labels": {
          "km/h": "Kilometers per hour",
          "mph": "Miles per hour"
        }
      }
    ],
    "input": false,
    "presentation": "metrics",
    "note": "Use measured rolling wheel circumference from 100 to 10000 mm. Separate tooth counts with spaces, up to 32 in each list. Each tooth count must be a whole number from 1 to 1000. Cadence accepts 0 to 300 RPM and target speed accepts 0 to 2000 in the selected unit. Gear inches use the equivalent rolling diameter. Results do not check mechanical compatibility or predict the effort needed to reach a speed. Do not use thousands separators.",
    "experience": {
      "automatic": false,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Type or paste your input…",
      "help": "Up to 1,000,000 characters. Review the settings before running.",
      "helpParts": [
        "Up to 1,000,000 characters.",
        "Review the settings before running."
      ],
      "action": null
    },
    "mode": "explicit",
    "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"
  }
}

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