How to convert time milliseconds to hours, min, sec format in JavaScript?

Question

I have the time as milliseconds, but I want the time after conversion like 00:00:00.

Ex: In milliseconds=86400000. I want how many hours in that millise

Answer 1

This solution uses one function to split milliseconds into a parts object, and another function to format the parts object.

I created 2 format functions, one as you requested, and another that prints a friendly string and considering singular/plural, and includes an option to show milliseconds.

function parseDuration(duration) {
  let remain = duration

  let days = Math.floor(remain / (1000 * 60 * 60 * 24))
  remain = remain % (1000 * 60 * 60 * 24)

  let hours = Math.floor(remain / (1000 * 60 * 60))
  remain = remain % (1000 * 60 * 60)

  let minutes = Math.floor(remain / (1000 * 60))
  remain = remain % (1000 * 60)

  let seconds = Math.floor(remain / (1000))
  remain = remain % (1000)

  let milliseconds = remain

  return {
    days,
    hours,
    minutes,
    seconds,
    milliseconds
  };
}

function formatTime(o, useMilli = false) {
  let parts = []
  if (o.days) {
    let ret = o.days + ' day'
    if (o.days !== 1) {
      ret += 's'
    }
    parts.push(ret)
  }
  if (o.hours) {
    let ret = o.hours + ' hour'
    if (o.hours !== 1) {
      ret += 's'
    }
    parts.push(ret)
  }
  if (o.minutes) {
    let ret = o.minutes + ' minute'
    if (o.minutes !== 1) {
      ret += 's'
    }
    parts.push(ret)

  }
  if (o.seconds) {
    let ret = o.seconds + ' second'
    if (o.seconds !== 1) {
      ret += 's'
    }
    parts.push(ret)
  }
  if (useMilli && o.milliseconds) {
    let ret = o.milliseconds + ' millisecond'
    if (o.milliseconds !== 1) {
      ret += 's'
    }
    parts.push(ret)
  }
  if (parts.length === 0) {
    return 'instantly'
  } else {
    return parts.join(' ')
  }
}

function formatTimeHMS(o) {
  let hours = o.hours.toString()
  if (hours.length === 1) hours = '0' + hours

  let minutes = o.minutes.toString()
  if (minutes.length === 1) minutes = '0' + minutes

  let seconds = o.seconds.toString()
  if (seconds.length === 1) seconds = '0' + seconds

  return hours + ":" + minutes + ":" + seconds
}

function formatDurationHMS(duration) {
  let time = parseDuration(duration)
  return formatTimeHMS(time)
}

function formatDuration(duration, useMilli = false) {
  let time = parseDuration(duration)
  return formatTime(time, useMilli)
}


console.log(formatDurationHMS(57742343234))

console.log(formatDuration(57742343234))
console.log(formatDuration(5423401000))
console.log(formatDuration(500))
console.log(formatDuration(500, true))
console.log(formatDuration(1000 * 30))
console.log(formatDuration(1000 * 60 * 30))
console.log(formatDuration(1000 * 60 * 60 * 12))
console.log(formatDuration(1000 * 60 * 60 * 1))