Convert DateTime in millisecond iOS

Question

I have the date and time , what i want is the no of milliseconds from the particular date and time

for eg: date is 21-04-2015 and time on the date(21-04-2015) is 14:23

then the output in milliseconds is 1429606437692 I want the no of milliseconds from 1970 to todays date up to 14:23 time how to get this date time in millisecond in iOS?

please help and thanks in advance.

Nimit Parekh · Accepted Answer · 2015-04-22T07:09:32.010

6

Following code for getting date and time into Millisecond.

NSTimeInterval timeInMiliseconds = [[NSDate date] timeIntervalSince1970];

For more detail refer apple documentation.

----Edited----

NSString *dateString = @"21-04-2015 14:23";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"dd-MM-yyyy HH:mm"];
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];
NSTimeInterval timeInMiliseconds = [dateFromString timeIntervalSince1970]*1000;

edited Apr 22 '15 at 07:09

answered Apr 22 '15 at 05:53

Nimit Parekh

16,776
8
50
72

this will take only today's date i also want to pass time of today's date.. – Krunal Apr 22 '15 at 05:56
So just put your NSDate there only – Nimit Parekh Apr 22 '15 at 05:59
i dopnt want millisecond up to todays date but also up to some time in todays date – Krunal Apr 22 '15 at 06:18
@Krunal - Please try this answer. Instead of `[NSDate date]` pass your `date` object which contains date as `21-04-2015 14:23` – Rahul Mane Apr 22 '15 at 06:27
You need to multiply by 1000.0 to get it in milliseconds. – Tim Johnsen Apr 22 '15 at 06:50
when i run your code it gives me this output : `1429606380.000000` it should be `1429606437692 ` – Krunal Apr 22 '15 at 06:51
@TimJohnsen then output will be `1429606380000.00000` but actual output for the given date and time is `1429606437692` where is the problem ? – Krunal Apr 22 '15 at 07:05
@Krunal please check millisecond this site http://goo.gl/kBQzKQ and insert `04/21/2015 14:23:00` it's return `1429606380000` – Nimit Parekh Apr 22 '15 at 07:08

score 1 · Answer 2 · answered Apr 22 '15 at 06:08

For that you need to multiply time gap by 1000, as time interval is in seconds and as float value. so simply multiply by 1000. For simple example I add selector

 NSDate *lastOneminute = [NSDate date];
[self performSelector:@selector(timeInterval:) withObject:lastOneminute afterDelay:60.0];

and after 60 seconds selector call is :

 - (void)timeInterval:(id)timeGap
{
    NSLog(@"time interval : %@",timeGap);

    NSTimeInterval timeInMiliseconds = [[NSDate date] timeIntervalSinceDate:timeGap] * 1000;
    NSLog(@"milisecond : %f",timeInMiliseconds);
}

SARATH SASI · Answer 3 · 2015-04-22T06:46:44.107

1

double timestamp = [[NSDate date] timeIntervalSince1970];
int64_t timeInMilisInt64 = (int64_t)(timestamp*1000);

#pragma mark - Date


   -(void)DateCalc
    {


        NSDate *today = [NSDate date];
        NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
        [dateFormat setDateFormat:@"dd/MM/yyyy"];
        dateString = [dateFormat stringFromDate:today];


        NSCalendar *calendar = [NSCalendar currentCalendar];
        NSDateComponents *comps = [NSDateComponents new];
        comps.day = 7;
        NSDate *sevenDays = [calendar dateByAddingComponents:comps toDate:[NSDate date] options:0];
        [dateFormat setDateFormat:@"dd/MM/yyyy"];
        EndingDate = [dateFormat stringFromDate:sevenDays];


    }

edited Apr 22 '15 at 06:46

answered Apr 22 '15 at 06:11

SARATH SASI

1,395
1
15
39

I want milliseconds up to some time not only up to todays date – Krunal Apr 22 '15 at 06:20
edited it for 7 days – SARATH SASI Apr 22 '15 at 07:16

score 0 · Answer 4 · answered Apr 22 '15 at 06:41

You can use below code

    NSString *dateStr = @"21-04-2015 14:23";

    // Convert string to date object
    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
    [dateFormat setDateFormat:@"dd-MM-YYYY HH:mm"];
    NSDate *date = [dateFormat dateFromString:dateStr];

    ////2014-12-21 08:53:00 +0000 date
    //// 1419151980000 -- milli seconds    
    NSTimeInterval timeInMiliseconds = [date timeIntervalSince1970]*1000;

Hope it helps you...!

Convert DateTime in millisecond iOS

4 Answers4