Time Unit Converter

Open Time Unit Converter 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-units",
  "category": "unit-converters",
  "built": true,
  "requirements": "Seconds/minutes/hours/days; exclude calendar months from fixed-duration assumptions.",
  "implementation": {
    "fields": [
      {
        "key": "value",
        "label": "Value",
        "value": 1,
        "type": "number"
      },
      {
        "key": "from",
        "label": "From",
        "value": "second",
        "type": "select",
        "values": [
          "second",
          "millisecond",
          "minute",
          "hour",
          "day",
          "week"
        ],
        "labels": {
          "m": "Meters (m)",
          "km": "Kilometers (km)",
          "cm": "Centimeters (cm)",
          "mm": "Millimeters (mm)",
          "in": "Inches (in)",
          "ft": "Feet (ft)",
          "yd": "Yards (yd)",
          "mi": "Miles (mi)",
          "kg": "Kilograms (kg)",
          "g": "Grams (g)",
          "mg": "Milligrams (mg)",
          "lb": "Pounds (lb)",
          "oz": "Ounces (oz)",
          "tonne": "Metric tonnes",
          "m²": "Square meters (m²)",
          "km²": "Square kilometers (km²)",
          "cm²": "Square centimeters (cm²)",
          "ft²": "Square feet (ft²)",
          "in²": "Square inches (in²)",
          "L": "Liters (L)",
          "mL": "Milliliters (mL)",
          "m³": "Cubic meters (m³)",
          "US fl oz": "US fluid ounces",
          "m/s": "Meters per second (m/s)",
          "km/h": "Kilometers per hour (km/h)",
          "mph": "Miles per hour (mph)",
          "knot": "Knots",
          "kB": "kB (10³ B)",
          "MB": "MB (10⁶ B)",
          "GB": "GB (10⁹ B)",
          "TB": "TB (10¹² B)",
          "KiB": "KiB (2¹⁰ B)",
          "MiB": "MiB (2²⁰ B)",
          "GiB": "GiB (2³⁰ B)",
          "TiB": "TiB (2⁴⁰ B)",
          "Pa": "Pascals (Pa)",
          "kPa": "Kilopascals (kPa)",
          "atm": "Standard atmospheres (atm)",
          "psi": "Pounds per square inch (psi)",
          "J": "Joules (J)",
          "kJ": "Kilojoules (kJ)",
          "cal": "Thermochemical calories (cal)",
          "kcal": "Kilocalories (kcal)",
          "Wh": "Watt-hours (Wh)",
          "kWh": "Kilowatt-hours (kWh)",
          "W": "Watts (W)",
          "kW": "Kilowatts (kW)",
          "MW": "Megawatts (MW)",
          "hp": "Mechanical horsepower (hp)",
          "byte": "Bytes (B)",
          "bit": "Bits (bit)"
        }
      },
      {
        "key": "to",
        "label": "To",
        "value": "millisecond",
        "type": "select",
        "values": [
          "second",
          "millisecond",
          "minute",
          "hour",
          "day",
          "week"
        ],
        "labels": {
          "m": "Meters (m)",
          "km": "Kilometers (km)",
          "cm": "Centimeters (cm)",
          "mm": "Millimeters (mm)",
          "in": "Inches (in)",
          "ft": "Feet (ft)",
          "yd": "Yards (yd)",
          "mi": "Miles (mi)",
          "kg": "Kilograms (kg)",
          "g": "Grams (g)",
          "mg": "Milligrams (mg)",
          "lb": "Pounds (lb)",
          "oz": "Ounces (oz)",
          "tonne": "Metric tonnes",
          "m²": "Square meters (m²)",
          "km²": "Square kilometers (km²)",
          "cm²": "Square centimeters (cm²)",
          "ft²": "Square feet (ft²)",
          "in²": "Square inches (in²)",
          "L": "Liters (L)",
          "mL": "Milliliters (mL)",
          "m³": "Cubic meters (m³)",
          "US fl oz": "US fluid ounces",
          "m/s": "Meters per second (m/s)",
          "km/h": "Kilometers per hour (km/h)",
          "mph": "Miles per hour (mph)",
          "knot": "Knots",
          "kB": "kB (10³ B)",
          "MB": "MB (10⁶ B)",
          "GB": "GB (10⁹ B)",
          "TB": "TB (10¹² B)",
          "KiB": "KiB (2¹⁰ B)",
          "MiB": "MiB (2²⁰ B)",
          "GiB": "GiB (2³⁰ B)",
          "TiB": "TiB (2⁴⁰ B)",
          "Pa": "Pascals (Pa)",
          "kPa": "Kilopascals (kPa)",
          "atm": "Standard atmospheres (atm)",
          "psi": "Pounds per square inch (psi)",
          "J": "Joules (J)",
          "kJ": "Kilojoules (kJ)",
          "cal": "Thermochemical calories (cal)",
          "kcal": "Kilocalories (kcal)",
          "Wh": "Watt-hours (Wh)",
          "kWh": "Kilowatt-hours (kWh)",
          "W": "Watts (W)",
          "kW": "Kilowatts (kW)",
          "MW": "Megawatts (MW)",
          "hp": "Mechanical horsepower (hp)",
          "byte": "Bytes (B)",
          "bit": "Bits (bit)"
        }
      }
    ],
    "input": false,
    "live": true,
    "presentation": "metrics",
    "note": "These are fixed durations: one day is 24 hours, even across daylight-saving changes. Results are rounded to 12 significant digits. Your input stays on your device.",
    "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": "POST /api/v1/tools/time-units/run",
  "api": {
    "id": "time-units",
    "name": "Time units",
    "category": "unit-converters",
    "description": "Convert between milliseconds, seconds, minutes, hours, days, and weeks.",
    "notes": "These are fixed durations: one day is 24 hours, even across daylight-saving changes. Results are rounded to 12 significant digits. Your input stays on your device.",
    "human_path": "/en/unit-converters/time-units/",
    "method": "POST",
    "endpoint": "/api/v1/tools/time-units/run",
    "schema_url": "/api/v1/tools/time-units",
    "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": {
            "value": {
              "type": "number",
              "description": "Value",
              "default": 1.0
            },
            "from": {
              "type": "string",
              "description": "From",
              "default": "second",
              "enum": [
                "second",
                "millisecond",
                "minute",
                "hour",
                "day",
                "week"
              ]
            },
            "to": {
              "type": "string",
              "description": "To",
              "default": "millisecond",
              "enum": [
                "second",
                "millisecond",
                "minute",
                "hour",
                "day",
                "week"
              ]
            }
          }
        }
      }
    },
    "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

Convert between milliseconds, seconds, minutes, hours, days, and weeks.

How to use Time units

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

Useful next steps

What to expect

Convert between milliseconds, seconds, minutes, hours, days, and weeks. Enter a value and choose the source and destination units. Your result updates automatically. The calculation uses the selected units; displayed digits do not improve the accuracy of your original measurement.

Try a small example

Choose the units that match your measurement.