happytails.ai

Time Duration Calculator

Open Time Duration 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": "time-duration",
  "category": "date-time-tools",
  "built": true,
  "requirements": "Start/end times, crossing midnight, breaks, decimal hours and explicit timezone handling.",
  "implementation": {
    "fields": [
      {
        "key": "start",
        "label": "Start time",
        "value": "09:00",
        "type": "text"
      },
      {
        "key": "end",
        "label": "End time",
        "value": "17:00",
        "type": "text"
      },
      {
        "key": "break",
        "label": "Unpaid break (minutes)",
        "value": 30,
        "type": "number"
      },
      {
        "key": "overnight",
        "label": "Ends next day",
        "value": false,
        "type": "checkbox"
      }
    ],
    "input": false,
    "experience": {
      "automatic": true,
      "single": false,
      "inputMaxLength": 1000000,
      "inputMode": "text",
      "label": "Your text",
      "placeholder": "Hello world!",
      "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": "POST /api/v1/tools/time-duration/run",
  "api": {
    "id": "time-duration",
    "name": "Time duration",
    "category": "date-time-tools",
    "description": "Start/end times, crossing midnight, breaks, decimal hours and explicit timezone handling.",
    "notes": "",
    "human_path": "/en/date-time-tools/time-duration/",
    "method": "POST",
    "endpoint": "/api/v1/tools/time-duration/run",
    "schema_url": "/api/v1/tools/time-duration",
    "input_schema": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "input": {
          "type": "string",
          "maxLength": 1000000,
          "default": "",
          "description": "Plain text input. File tools use files instead unless otherwise documented."
        },
        "options": {
          "type": "object",
          "additionalProperties": false,
          "properties": {
            "start": {
              "type": "string",
              "description": "Start time",
              "default": "09:00"
            },
            "end": {
              "type": "string",
              "description": "End time",
              "default": "17:00"
            },
            "break": {
              "type": "number",
              "description": "Unpaid break (minutes)",
              "default": 30.0
            },
            "overnight": {
              "type": "boolean",
              "description": "Ends next day",
              "default": false
            }
          }
        }
      }
    },
    "output_schema": {
      "type": "object",
      "required": [
        "tool",
        "result"
      ],
      "properties": {
        "tool": {
          "type": "string"
        },
        "result": {
          "type": "object",
          "required": [
            "text",
            "files"
          ],
          "properties": {
            "text": {
              "type": [
                "string",
                "null"
              ]
            },
            "data": {
              "description": "Parsed JSON when the textual result is JSON."
            },
            "name": {
              "type": "string"
            },
            "mime": {
              "type": "string"
            },
            "files": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "name",
                  "mime",
                  "bytes",
                  "base64"
                ],
                "properties": {
                  "name": {
                    "type": "string"
                  },
                  "mime": {
                    "type": "string"
                  },
                  "bytes": {
                    "type": "integer"
                  },
                  "base64": {
                    "type": "string",
                    "contentEncoding": "base64"
                  }
                }
              }
            }
          }
        }
      }
    },
    "processing": "Server; same transformation code as browser tools",
    "limits": {
      "request_bytes": 8388608,
      "input_characters": 1000000,
      "files_bytes": 5242880,
      "max_files": 0,
      "timeout_seconds": 12
    }
  },
  "agent_processing": "Server; same transformation code as browser tools",
  "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

Work out the hours between two times, with breaks taken out.

How to use Time duration
  1. Enter the values you want to calculate and choose the relevant units or settings.
  2. The result updates as you type. Adjust the available settings if needed.
  3. Review the result, then use Copy result or a download link when available.

Useful next steps

Working with time duration

Date calculations can depend on calendar rules, time zones and whether endpoints are included. A duration in hours is different from a number of calendar days when daylight-saving changes occur.

Common questions

Are all days exactly 24 hours long?

Elapsed time across a daylight-saving transition can differ from a simple calendar-day count. Use the measure relevant to your schedule.

Why can the same timestamp show different dates?

A timestamp represents an instant, while a calendar date is interpreted in a time zone. Near midnight, the same instant can fall on different local dates.

Continue your workflow: Date difference, Time zone converter, Business days.