Time Difference Calculator: Calculate Time

A Bullet Time Calculator enables you to calculate the difference in time between two different start times, end times, or two different time zones. This helps you work out how many hours there are between two times, work out how many hours you work in a shift or identify the time difference between two different cities.

Time difference is really useful to have knowledge of, for example, you might have a work meeting in New York but need to speak to somebody in California or London. Understanding the time difference will help you avoid any issues with trying to organise your work around conflicting times.

Calculating time differences can be really useful the United States has several key time zones such as Eastern time, Central time, Mountain time and Pacific time. For example, when it is 12pm in New York it is usually 9am in Los Angeles. Sometimes these time zones can be affected due to Daylight Saving.

The Free Time Difference Calculator makes calculating the time difference between two times or dates straightforward. Simply add in the times or dates to give you a quick answer.

No matter what you are, whether that’s a Student, Employee, Business Owner, Traveller or Work From Home, you can use this calculator to help you keep track of your time more efficiently.

How To Use

Using an online Time Difference Calculator is so simple, you just need to follow a few steps.

1) Add In Start Time

2) Add in the End Time

3) Add In Dates (If Needed)

4) Add In Time Zones (If Needed)

5) Click On Calculate

6) View Results

The result will be shown in either hours and minutes, or in whatever time format you can.

For example, if I start working at 8.30am and finish at 5.15pm, simply add in these times. The result will show 8 hours and 45 minutes.

If your working overnight make sure your times reflect this.

Formula

The basic formular is:

Time Difference = End Time - Start Time

The difference between two times can be worked out easily using the 24-hour clock. Simply convert your times to how many minutes after midnight.

T=(H2 x 60 + M2) - (H1 x 60 + M1)

Where:

\\(T\\) = Time difference in minutes

\\(H_1\\) = Start time in hours

\\(M_1\\) = Start time in minutes

\\(H_2\\) = End time in hours

\\(M_2\\) = End time in minutes

You can also use the result to convert into hours and minutes:

Hours = T / 60 (Floor)

Minutes = T % 60

If your using Time Zone differences, you’ll also need to include the Difference In UTC.

Difference In Time Zone Formula:

AM = 8 = UTC2 - UTC1

Where:

UTC1 and UTC2 = UTC Offset for each time zone depending on the date selected.

For example, if it’s Eastern Standard Time (EST), this is -5 compared to UTC whilst Pacific Standard Time (PST) is -8, the difference in time is 3.

Your UTC Offset may change depending on whether there is DaylightSaving.

Examples

To understand how a bullet time calculator operates let’s look at some examples.

Working From 9Am To 5.30 Pm

Start Time: 9.00 Am , End Time: 5.30 Pm

5.30 - 9.00 = 8 hours and 30 minutes.

This shows that you have 8 hours and 30 minutes between these two times, without accounting for any breaks.

Calculting A Night Time Difference

Start Time: 10.00 Pm , End Time: 6.00 Am.

From 10pm until midnight = 2 hours.

From midnight until 6.00am = 6 AM = 6

Difference = 8 2 + 6 = 8

Result = 8 hours.

Comparing Time Zones In The Usa

New York to Los Angeles.

New York: 12pm. , Los Angeles: 9am.

12pm - 9am = 3 AM = 3.

This example is based upon both locations being on their respective Daylight/Standard Times. Usually the difference is 3 hours.

Understanding The Results

The results of a bullet time calculator tell you how much difference there is between your selected times;

Depending on what features are included in the calculator you will see different results;

Hours & Minutes

The result shows how much time there is between your times in hours and minutes. This example would show 4 hr & 25 My.

Total minutes

This result converts everything to hours. So if there were 4hrs & 25Min between your set times then your result would be 265 minutes.

Hours total

Your result will show the total in only numbers. So if there was 4hr & 30 Min it would show as 4.5 Hours.

Time Zone Differences.

If you want to calculate the time difference between two locations your results will show you how far ahead or behind the other location is;

For example, if it’s 3pm in New York and 12pm in Los Angeles the difference in time is 3 hours as New York is 3 hours ahead.

When you understand your results you’ll be able to plan appointments, calculate work times, deadlines and keep things running smoothly with different locations.

Factors That Can Affect Time Difference

There are a few factors to take into consideration;

Different Time Zones

Geographical Locations will have different Standard Time Zones. For example, New York is usually 3 hours ahead of Los Angeles.

Daylight Saving Time (DST)

Many US states and other countries use Daylight Saving Time, meaning people will move their clocks ahead (usually). During Spring the clocks go forward 1 hour and during Autumn they’re put back 1 hour.

The Time Difference can be altered.

Start/End Dates

Make sure you get the right start/end dates for your calculation.

AM/PM

If you include the wrong times during the calculation such as AM instead of PM you won’t get the right result. Always double check your times.

The End Time Falls On The Next Day

If your End Time falls on the next day, ensure you include this within your calculation, otherwise it might not give an accurate figure.

International Date Line

Some locations are in different time zones because of the International Date Line, meaning the location might not fall under the same date on its calendar.

Benefits Of Using A Time Difference Calculator

Using a Time Difference Calculator online can provide you with several benefits;

Saves Time

Work out the time difference between two set times in seconds.

Help Work Out Shift Times

Employees, Managers & Business Owners can use this calculator to work out how many hours they need to work or how long their shifts are. They could also work out how many hours of Overtime they’ve worked.

International Meetings

Remote teams can use this to work out their Time Zones and find the best times for them to meet folks in different countries.

Travel

Travelers can use this to understand how much of a time jump there is between the destination they’re leaving and arriving. They can then plan accordingly.

Increased Productivity

Students & Professionals can work out how long they’ve studied, how long a project would last or how long they’ve spent doing X.

Less Mistakes

As it is an online calculator there will be less mistakes made. Especially with minutes, periods overnight or multiple time zones.

Businesses

Businesses can use this to help staff with International Customers, Suppliers & Employees.

Personal Schedule

Calculate how long your appointments, gym sessions, cooking etc. last.

Accuracy

A Time Difference Calculator can help give an accurate result based upon correct input. The Time difference calculator will provide you with accurate results based upon exactly how long the start and endTimes are, the correct start & end dates and time zones.

Bear in mind;

Ensure you’ve added in the correct Time.

Ensure you’ve selected the correct Time Zones when comparing different locations.

Depending on the date selected, some Time Zones may be alterered due to DS.

If the End Time involves overnight make sure you’ve included the correct End date.

Simple differences don’t include breaks. This will just calculate the total time passed. Unless listed on the calculator.

Some Time Zones may have changed based on the date. You’ll need to ensure you have accurate Time Zone information for the set date.

Not all States/Territories in the USA use DS. For example, most of Arizona don’t use it, neither does Hawaii.

To gain the most accurate results always double check your Time Zoness & Dates before using for payroll, businesses, travelling & any important decisions.

FAQ

What Is A Time Difference Calculator?

A Time Difference Calculator will help you work out how much time there is between two selected times/dates. This can help you work out how many hours, minutes and time difference between two locations.

How Do I Calculate The Time Difference Between Two Times?

Work out the difference by taking away the start time from your finish time. For example, if I have worked from 9am to 4.30pm then my time difference is 7 hours & 30 minutes.

Can I Calculate Time Differences Between Two Time Zones?

Yes. This can be done by including the UTC Offsets for each time zone. For example, usually New York is 3 hours ahead of Los Angeles.

How Do I Calculate The Time Difference If My End Time Falls After Midnight?

If your end time falls on the next day include how much time is left until midnight, then work out how much time will pass from midnight to finish time. For example 10pm and 6am = 8 hours.

Is Daylight Saving Time Affected By The Calculation?

Yes. Daylight Saving can affect the overall result as your Time Zone may have had its UTC Offset changed. Always take note of which date your looking at when comparing Time Zones that utilise DST.