How can I convert seconds into (Hour:Minutes:Seconds:Milliseconds) time?

Question

Let's say I have 80 seconds; are there any specialized classes/techniques in .NET that would allow me to convert those 80 seconds into (00h:00m:00s:00ms) format like Convert.ToDateTime or something?

Curtis Shipley · Accepted Answer · 2017-08-09 20:09:09Z

688

For .Net <= 4.0 Use the TimeSpan class.

TimeSpan t = TimeSpan.FromSeconds( secs );

string answer = string.Format("{0:D2}h:{1:D2}m:{2:D2}s:{3:D3}ms", 
                t.Hours, 
                t.Minutes, 
                t.Seconds, 
                t.Milliseconds);

(As noted by Inder Kumar Rathore) For .NET > 4.0 you can use

TimeSpan time = TimeSpan.FromSeconds(seconds);

//here backslash is must to tell that colon is
//not the part of format, it just a character that we want in output
string str = time .ToString(@"hh\:mm\:ss\:fff");

(From Nick Molyneux) Ensure that seconds is less than TimeSpan.MaxValue.TotalSeconds to avoid an exception.

edited Aug 9, 2017 at 20:09

answered Jan 21, 2009 at 0:19

Curtis Shipley

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using System; The class resides in System.TimeSpan.
– fbmd
Commented Apr 8, 2015 at 16:14

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Inder Kumar Rathore · Accepted Answer · 2020-03-31 02:43:18Z

100

For .NET > 4.0 you can use

TimeSpan time = TimeSpan.FromSeconds(seconds);

//here backslash is must to tell that colon is
//not the part of format, it just a character that we want in output
string str = time .ToString(@"hh\:mm\:ss\:fff");

or if you want date time format then you can also do this

TimeSpan time = TimeSpan.FromSeconds(seconds);
DateTime dateTime = DateTime.Today.Add(time);
string displayTime = dateTime.ToString("hh:mm:tt");

For more you can check Custom TimeSpan Format Strings

edited Mar 31, 2020 at 2:43

answered Jul 23, 2013 at 5:53

Inder Kumar Rathore

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2

You do not need TimeSpan to add seconds to DateTime. Just use DateTime.AddSeconds().
– Evgeni Nabokov
Commented Dec 7, 2015 at 16:11
@MehdiDehghani for 24hr format you've to use 'HH' instead of 'hh'
– Inder Kumar Rathore
Commented Dec 12, 2016 at 18:35
@InderKumarRathore I was talking about your first solution, HH is invalid there.
– Mehdi Dehghani
Commented Dec 12, 2016 at 18:56
1

@InderKumarRathore .ToString(@"hh\:mm\:ss\:fff"); is already in 24hr format. HH is not valid there with such input (the error is Input string was not in a correct format.)
– Mehdi Dehghani
Commented Dec 13, 2016 at 5:48
1

Typo on your code, string displayTime = date.ToString("hh:mm:tt"); [date] should be [dateTime]
– Pablo Carrasco Hernández
Commented Mar 29, 2020 at 16:32

| Show 2 more comments

Jim Mischel · Accepted Answer · 2009-01-21 00:20:06Z

28

If you know you have a number of seconds, you can create a TimeSpan value by calling TimeSpan.FromSeconds:

 TimeSpan ts = TimeSpan.FromSeconds(80);

You can then obtain the number of days, hours, minutes, or seconds. Or use one of the ToString overloads to output it in whatever manner you like.

answered Jan 21, 2009 at 0:20

Jim Mischel

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Andrew · Accepted Answer · 2017-01-23 05:31:56Z

I did some benchmarks to see what's the fastest way and these are my results and conclusions. I ran each method 10M times and added a comment with the average time per run.

If your input milliseconds are not limited to one day (your result may be 143:59:59.999), these are the options, from faster to slower:

// 0.86 ms
static string Method1(int millisecs)
{
    int hours = millisecs / 3600000;
    int mins = (millisecs % 3600000) / 60000;
    // Make sure you use the appropriate decimal separator
    return string.Format("{0:D2}:{1:D2}:{2:D2}.{3:D3}", hours, mins, millisecs % 60000 / 1000, millisecs % 1000);
}

// 0.89 ms
static string Method2(int millisecs)
{
    double s = millisecs % 60000 / 1000.0;
    millisecs /= 60000;
    int mins = millisecs % 60;
    int hours = millisecs / 60;
    return string.Format("{0:D2}:{1:D2}:{2:00.000}", hours, mins, s);
}

// 0.95 ms
static string Method3(int millisecs)
{
    TimeSpan t = TimeSpan.FromMilliseconds(millisecs);
    // Make sure you use the appropriate decimal separator
    return string.Format("{0:D2}:{1:D2}:{2:D2}.{3:D3}",
        (int)t.TotalHours,
        t.Minutes,
        t.Seconds,
        t.Milliseconds);
}

If your input milliseconds are limited to one day (your result will never be greater then 23:59:59.999), these are the options, from faster to slower:

// 0.58 ms
static string Method5(int millisecs)
{
    // Fastest way to create a DateTime at midnight
    // Make sure you use the appropriate decimal separator
    return DateTime.FromBinary(599266080000000000).AddMilliseconds(millisecs).ToString("HH:mm:ss.fff");
}

// 0.59 ms
static string Method4(int millisecs)
{
    // Make sure you use the appropriate decimal separator
    return TimeSpan.FromMilliseconds(millisecs).ToString(@"hh\:mm\:ss\.fff");
}

// 0.93 ms
static string Method6(int millisecs)
{
    TimeSpan t = TimeSpan.FromMilliseconds(millisecs);
    // Make sure you use the appropriate decimal separator
    return string.Format("{0:D2}:{1:D2}:{2:D2}.{3:D3}",
        t.Hours,
        t.Minutes,
        t.Seconds,
        t.Milliseconds);
}

In case your input is just seconds, the methods are slightly faster. Again, if your input seconds are not limited to one day (your result may be 143:59:59):

// 0.63 ms
static string Method1(int secs)
{
    int hours = secs / 3600;
    int mins = (secs % 3600) / 60;
    secs = secs % 60;
    return string.Format("{0:D2}:{1:D2}:{2:D2}", hours, mins, secs);
}

// 0.64 ms
static string Method2(int secs)
{
    int s = secs % 60;
    secs /= 60;
    int mins = secs % 60;
    int hours = secs / 60;
    return string.Format("{0:D2}:{1:D2}:{2:D2}", hours, mins, s);
}

// 0.70 ms
static string Method3(int secs)
{
    TimeSpan t = TimeSpan.FromSeconds(secs);
    return string.Format("{0:D2}:{1:D2}:{2:D2}",
        (int)t.TotalHours,
        t.Minutes,
        t.Seconds);
}

And if your input seconds are limited to one day (your result will never be greater then 23:59:59):

// 0.33 ms
static string Method5(int secs)
{
    // Fastest way to create a DateTime at midnight
    return DateTime.FromBinary(599266080000000000).AddSeconds(secs).ToString("HH:mm:ss");
}

// 0.34 ms
static string Method4(int secs)
{
    return TimeSpan.FromSeconds(secs).ToString(@"hh\:mm\:ss");
}

// 0.70 ms
static string Method6(int secs)
{
    TimeSpan t = TimeSpan.FromSeconds(secs);
    return string.Format("{0:D2}:{1:D2}:{2:D2}",
        t.Hours,
        t.Minutes,
        t.Seconds);
}

As a final comment, let me add that I noticed that string.Format is a bit faster if you use D2 instead of 00.

toad · Accepted Answer · 2009-01-21 00:21:18Z

11

TimeSpan.FromSeconds(80);

http://msdn.microsoft.com/en-us/library/system.timespan.fromseconds.aspx

answered Jan 21, 2009 at 0:21

toad

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Jim Petkus · Accepted Answer · 2009-01-21 00:24:07Z

10

The TimeSpan constructor allows you to pass in seconds. Simply declare a variable of type TimeSpan amount of seconds. Ex:

TimeSpan span = new TimeSpan(0, 0, 500);
span.ToString();

answered Jan 21, 2009 at 0:24

Jim Petkus

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Oliver Friedrich · Accepted Answer · 2009-01-21 00:24:38Z

4

I'd suggest you use the TimeSpan class for this.

public static void Main(string[] args)
{
    TimeSpan t = TimeSpan.FromSeconds(80);
    Console.WriteLine(t.ToString());

    t = TimeSpan.FromSeconds(868693412);
    Console.WriteLine(t.ToString());
}

Outputs:

00:01:20
10054.07:43:32

answered Jan 21, 2009 at 0:24

Oliver Friedrich

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Nathan Tuggy · Accepted Answer · 2015-05-13 01:52:41Z

4

In VB.NET, but it's the same in C#:

Dim x As New TimeSpan(0, 0, 80)
debug.print(x.ToString())
' Will print 00:01:20

edited May 13, 2015 at 1:52

Nathan Tuggy

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answered Jan 21, 2009 at 0:22

Stefan

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Ege Aydın · Accepted Answer · 2018-01-24 19:10:22Z

For .NET < 4.0 (e.x: Unity) you can write an extension method to have the TimeSpan.ToString(string format) behavior like .NET > 4.0

public static class TimeSpanExtensions
{
    public static string ToString(this TimeSpan time, string format)
    {
        DateTime dateTime = DateTime.Today.Add(time);
        return dateTime.ToString(format);
    }
}

And from anywhere in your code you can use it like:

var time = TimeSpan.FromSeconds(timeElapsed);

string formattedDate = time.ToString("hh:mm:ss:fff");

This way you can format any TimeSpanobject by simply calling ToString from anywhere of your code.

Evgeni Nabokov · Accepted Answer · 2017-02-14 21:26:22Z

1

Why do people need TimeSpan AND DateTime if we have DateTime.AddSeconds()?

var dt = new DateTime(2015, 1, 1).AddSeconds(totalSeconds);

The date is arbitrary. totalSeconds can be greater than 59 and it is a double. Then you can format your time as you want using DateTime.ToString():

dt.ToString("H:mm:ss");

This does not work if totalSeconds < 0 or > 59:

new DateTime(2015, 1, 1, 0, 0, totalSeconds)

edited Feb 14, 2017 at 21:26

answered Dec 7, 2015 at 15:59

Evgeni Nabokov

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unos baghaii · Accepted Answer · 2018-09-03 07:29:22Z

0

to get total seconds

var i = TimeSpan.FromTicks(startDate.Ticks).TotalSeconds;

and to get datetime from seconds

var thatDateTime = new DateTime().AddSeconds(i)

answered Sep 3, 2018 at 7:29

unos baghaii

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ATUL SHARMA · Accepted Answer · 2020-01-16 20:57:11Z

0

This will return in hh:mm:ss format

 public static string ConvertTime(long secs)
    {
        TimeSpan ts = TimeSpan.FromSeconds(secs);
        string displayTime = $"{ts.Hours}:{ts.Minutes}:{ts.Seconds}";
        return displayTime;
    }

answered Jan 16, 2020 at 20:57

ATUL SHARMA

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You must not have tested this. ConvertTime(80) returns 0:1:20 and ConvertTime(61) returns 0:1:1, both of which are h:m:s. Using string interpolation also results in longer code than ToString(), as used in other answers, and also makes it harder to visualize the formatted string length.
– Lance U. Matthews
Commented Mar 31, 2020 at 3:00

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Vadim Teselkin · Accepted Answer · 2022-10-21 14:51:02Z

0

 TimeSpan t = TimeSpan.FromSeconds(EnergyRestoreTimer.Instance.SecondsForRestore);
            string sTime = EnergyRestoreTimer.Instance.SecondsForRestore < 3600
                ? $"{t.Hours:D2}:{t.Minutes:D2}:{t.Seconds:D2}"
                : $"{t.Minutes:D2}:{t.Seconds:D2}";
            time.text = sTime;

answered Oct 21, 2022 at 14:51

Vadim Teselkin

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Moh Rezaee · Accepted Answer · 2015-08-31 03:30:47Z

private string ConvertTime(double miliSeconds)
{
    var timeSpan = TimeSpan.FromMilliseconds(totalMiliSeconds);
    // Converts the total miliseconds to the human readable time format
    return timeSpan.ToString(@"hh\:mm\:ss\:fff");
}

//Test

    [TestCase(1002, "00:00:01:002")]
    [TestCase(700011, "00:11:40:011")]
    [TestCase(113879834, "07:37:59:834")]
    public void ConvertTime_ResturnsCorrectString(double totalMiliSeconds, string expectedMessage)
    {
        // Arrange
        var obj = new Class();;

        // Act
        var resultMessage = obj.ConvertTime(totalMiliSeconds);

        // Assert
        Assert.AreEqual(expectedMessage, resultMessage);
    }

1. OP asked for conversion from seconds, not milliseconds. 2. How is your answer etter than the currently accepted answer? — vesan, Commented Aug 31, 2015 at 3:45

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