millisecondsToHours — GTM Variable Template for Date

VARIABLES › DATE

millisecondsToHours EXTENDED Date

Direct (.tpl) Apply (.tpl) Add to GTM

Converts milliseconds to hours.

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When to Use This

Time Operations

Measure durations, calculate elapsed time, and format timestamps.

Type Conversion

Safely convert between data types — strings, numbers, booleans, arrays, objects.

Date & Time

Calculate durations, differences, and time-based operations on date values.

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Examples

Milliseconds to hours▶ Try

INPUT

Number of Milliseconds: 7200000

OUTPUT

2

Zero returns 0▶ Try

INPUT

Number of Milliseconds: 0

OUTPUT

0

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Live Sandbox

This is what you'll see when you open this variable in Google Tag Manager. Hover the icons for details.

millisecondsToHours

Read-Only Try Live

Number of Milliseconds

💾 The number of milliseconds to convert to hours.

Supported formats:
  ✓ Number
  ✓ String

Input Setup

Input Function (optional)

⚙️ Optional pre-processing function applied to the input before internal logic (e.g., convert object to string, normalize case). Internal transformations such as case handling will still apply afterward.

Result Handling

Output Function (optional)

⚙️ Optional function to apply to the result before returning it (e.g., str => str + ' €', val => val !== undefined for boolean conversion). Useful for chaining transformations on the output.

Number of Milliseconds number

💡 Type any text to see the result update live

🎯 Using special value — click input to type instead

Test with:

Falsy undefined null "" empty 0 false NaN

Truthy true 42 "hello" {} empty [] empty {a:1} [1,2,3]

🔗 Result Handling — Chain Variables

Chain apply-mode variables to the output. Each variable receives the result of the previous one.

millisecondsToHours()

+ Chain another variable

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Related Variables

Same category: Date

→ addDays → basicDateToExtended → calculateDaysDifference → calculateLeadTime → currentTimestamp → dateToUnixTimestamp → daysToMilliseconds → extendedDateToBasic → getDayIndexFromDateString → getDayName → getDayNameFromDateString → getDayNameShort → getHourOfDay → getMonthName → getMonthNameShort → hoursToMilliseconds → isBusinessHours → isWeekend → millisecondsToDays → millisecondsToMinutes → millisecondsToSeconds → minutesToMilliseconds → reverseDateCompactDay1st → reverseDateCompactYear1st → reverseDateSlash → secondsToMilliseconds → subtractDays → timestampToDayIndex → unixTimestampToDate

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Under the Hood

📜 View Implementation Code

/**
* Converts a number of milliseconds to hours.
*
* @param {string|number} data.src - The number of milliseconds to convert to hours.
* @param {Function|string} [data.out] - Optional output handler: function to transform result or string with format.
*
* Direct-mode specific parameters:
* @param {Function} [data.pre] - Optional pre-processor function to transform src before conversion.
*
* @returns {number|undefined} The time in hours, or undefined if input is not a valid number.
*
* @framework ggLowCodeGTMKit
*/
const makeNumber = require('makeNumber');

const millisecondsToHours = function(timeValue) {
   const timeNum = makeNumber(timeValue);
   if (timeNum === timeNum) {
       return timeNum / (1000 * 60 * 60);
   }
   return undefined;
};

const safeFunction = fn => typeof fn === 'function' ? fn : x => x;
const out = safeFunction(data.out);

// ===============================================================================
// millisecondsToHours - Direct mode
// ===============================================================================
const applyCast = (castFn, value) => safeFunction(castFn)(value);
const value = applyCast(data.pre, data.src);
return out(millisecondsToHours(value));
// ===============================================================================
// millisecondsToHours() – Apply Mode
// ===============================================================================
/*
return function(value) {
  return out(millisecondsToHours(value));
};
*/

🧪 View Test Scenarios (5 tests)

✅ '[example] Milliseconds to hours'
✅ String milliseconds - converts to hours
✅ Partial hour milliseconds - converts to decimal hours
✅ Invalid string input - returns undefined
✅ '[example] Zero returns 0'