Calculator Use
Use this calculator to add up a time sheet or for time card labor hours.
Enter only integers such as 1215 for 12:15 or 137 for 1:37. For a full time card use a Time Card Calculator.
Enter start time and end time without '.' or ':'.
If you enter a single integer from 1 through 12 it will assume 1:00 through 12:00.
Assumes "12 pm" for noon and "12 am" for midnight.
Converting between digital time and decimal hours
Suppose youcalculated a total digital time of 7:15, 7 hours and 15 minutes.The equivalent time in decimal hours is 7.25 hours. You will need decimal hours to calculate pay.
Converting from minutes to decimal hours
7:15 is 7.0 hours plus 15 minutes. You'll need to convert the minutes part to hours.
15 minutes times 1 hour per 60 minutes will make the conversion to hours and minutes will cancel out.
15 min × (1 hr / 60 min) = (15/60) hr = 0.25 hr
Adding the 0.25 to the 7.0 our total is 7.0 + 0.25 = 7.25 hours
In Reverse, converting from decimal hours to minutes
0.25 hours times 60 minutes per 1 hour = 0.25 hr × (60 min/ 1hr) = (0.25 ×60) min = 15 minutes.
FAQs
With the start and end times in a 24-hour and decimal format, you can simply subtract the start time from the end time to determine the total work hours. For example: As John started work at 8:00 AM (08:00) and finished at 5:15 PM (17:00), his total work hours amount to 9:15 hours (17:15 – 8:00 = 9:15).
How can you avoid getting wrong answers on a calculator? ›
Order matters !! It can matter what order you enter a calculation if it involves multiple steps. Your calculator will typically do multiplication and division steps before doing addition or subtraction. You can force the calculator to do the part of the problem that you have entered by using the [=] key.
How to calculate hours in a calculator? ›
You'll need to convert the minutes part to hours. 15 minutes times 1 hour per 60 minutes will make the conversion to hours and minutes will cancel out. 0.25 hours times 60 minutes per 1 hour = 0.25 hr × (60 min/ 1hr) = (0.25 × 60) min = 15 minutes.
How do you calculate time quickly? ›
Elapsed Time = End Time – Start Time
- To solve the problem, we need to subtract the start time from the end time. By plugging our start and end time into the equation we can solve for elapsed time.
- 5:45 – 3:15 = 2 hours and 30 minutes.
- This means there are 2 hours and 30 minutes between 3:15 and 5:45.
To calculate the number of hours between two times:
- Convert both times to a 24-hour time format.
- Subtract the starting time from the ending time.
- Do you have any seconds or minutes after the subtraction? If so: ...
- Voila! You have calculated the hours between times.
A frequent issue with students is their uncritical over-reliance on computation devices. While these can of course be quite helpful, they also need to be handled with care, because they make systematic mistakes (such as rounding mistakes).
How to do calculations without mistakes? ›
Avoiding Small Mistakes in Math
- Write out every step, whether or not it seems silly! Doing this allows you to to easily reference back to your work and rework steps that you are unsure of. ...
- Break it Down! ...
- Use your Calculator. ...
- Check Your Answers... ...
- Use Common Sense. ...
- Understand the Question.
In the case of the two calculators, one is using the order of operations and the other is not, commenters point out. "The iPhone Calculator is applying the order of operations (PEMDAS/BODMAS), which means it calculates multiplication and division before addition and subtraction.
What time should I clock out to get 8 hours? ›
You calculate the checkout time by adding 8 hours to the start time. If you need to account for the break time, then you also add the break duration. In most states in the US, small breaks for 10-15 minutes need not be accounted for.
What is the formula for calculating standard hours? ›
Calculation of Standard Hours or Amounts
Weekly: Hours per day x 5. Biweekly: Hours per day x 10. Semi-monthly: Hours per day x 260 [52 weeks x 5 days per week] divided by 24 [two periods per month] Monthly: Hours per day x 260 [52 weeks x 5 days per week] divided by 12 [one period per month]
First, determine the total number of hours worked by multiplying the hours per week by the number of weeks in a year (52). Next, divide this number from the annual salary. For example, if an employee has a salary of $50,000 and works 40 hours per week, the hourly rate is $50,000/2,080 (40 x 52) = $24.04.
Why am I getting wrong answers on my calculator? ›
You may be entering the numbers and operations wrong. I have noticed that some of my students make that mistake, for example if question is 2*5/(3*4) you will get a wrong answer if you multiply 2 and 5 then divide by3 and multiply by 4.
What is calculator trick? ›
Choose a repeating 8-digit number (like 12,341,234) and divide it by 137. Divide that new number by the original 4-digit number—the answer will always be 73. Pick a number between 1 and 9 and multiply it by 9. Multiply this new number by 12,345,679 to get a repeating string of your original number, like 111,111,111.
How do I know if my calculator is working properly? ›
1. Check the calculation expression to make sure that it does not contain any errors. 2. Make sure that you are using the correct mode for the type of calculation you are trying to perform.
How can I calculate my hourly? ›
First, determine the total number of hours worked by multiplying the hours per week by the number of weeks in a year (52). Next, divide this number from the annual salary. For example, if an employee has a salary of $50,000 and works 40 hours per week, the hourly rate is $50,000/2,080 (40 x 52) = $24.04.
What is the formula for calculating time? ›
time = distance ÷ speed.
How many hours is it from 7:30 to 4:30? ›
7 30 am to 4 30 pm is 9 hours - calculate time between any two hours while you type. 7:30 am to 4:30pm is how many hours? Typically, you need to find a calculator, calculate the hours worked and then copy it over.
