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Hours and Minutes Calculator

Add or subtract hours and minutes, calculate total time, convert the result to decimal hours, and see total minutes with our easy time calculator.

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Calculate Hours and Minutes

Enter two or more time durations below. Choose whether each additional entry should be added to or subtracted from the total.

Operation
Hours
Minutes

Calculation Result

Total Time 2 hrs 15 mins 02:15
Total Hours 2
Remaining Minutes 15
Decimal Hours 2.25
Total Minutes 135

Hours and Minutes Formula

Convert every time duration to minutes first. Add or subtract the values, then convert the final result back into hours and minutes.

Total Minutes = (Hours × 60) + Minutes

What Is an Hours and Minutes Calculator?

An Hours and Minutes Calculator helps you add or subtract time durations without manually carrying minutes into hours. It is useful when working with shifts, schedules, projects, travel times, study periods, or other time-based calculations.

The calculator first converts each duration into minutes. After performing the selected addition or subtraction, it converts the result back into hours and minutes.

Example:

1 hour 30 minutes + 45 minutes = 2 hours 15 minutes.

How to Use the Hours and Minutes Calculator

1

Enter Time

Enter the hours and minutes for your first time duration.

2

Add More Entries

Add additional durations and choose whether each one should be added or subtracted.

3

Calculate

Click Calculate Total Time to see hours, minutes, decimal hours, and total minutes.

How to Add Hours and Minutes

The easiest way to add time durations is to convert everything to minutes before adding the values together.

Example:

2 hours 40 minutes = (2 × 60) + 40 = 160 minutes

1 hour 35 minutes = (1 × 60) + 35 = 95 minutes

160 + 95 = 255 minutes

255 minutes = 4 hours 15 minutes

How to Subtract Hours and Minutes

Time subtraction works in the same way. Convert both durations into minutes, subtract the second value from the first, and then convert the result back into hours and minutes.

Example:

5 hours 20 minutes = 320 minutes

2 hours 45 minutes = 165 minutes

320 − 165 = 155 minutes

155 minutes = 2 hours 35 minutes

How to Convert Hours and Minutes to Decimal Hours

Decimal hours are useful for payroll, billing, timesheets, and spreadsheet calculations. Divide the minutes by 60 and add the result to the number of whole hours.

Formula:

Decimal Hours = Hours + (Minutes ÷ 60)

2 hours 30 minutes = 2 + (30 ÷ 60)

= 2.5 decimal hours

Minutes to Hours Conversion Chart

Minutes Hours & Minutes Decimal Hours
15 0 hr 15 min 0.25
30 0 hr 30 min 0.50
45 0 hr 45 min 0.75
60 1 hr 0 min 1.00
90 1 hr 30 min 1.50
120 2 hr 0 min 2.00
150 2 hr 30 min 2.50
180 3 hr 0 min 3.00
240 4 hr 0 min 4.00

Common Uses for an Hours and Minutes Calculator

Frequently Asked Questions

How do I add hours and minutes?

Convert the hours to minutes by multiplying them by 60, add the remaining minutes, and then add all time values together.

How many minutes are in one hour?

There are 60 minutes in one hour.

What is 1 hour and 30 minutes in decimal hours?

One hour and 30 minutes equals 1.5 decimal hours.

What is 2 hours and 45 minutes as a decimal?

Two hours and 45 minutes equals 2.75 decimal hours.

Can I subtract hours and minutes?

Yes. Select the subtract option beside an additional time entry and the calculator will subtract that duration from the running total.

Can I add more than two time durations?

Yes. Use the Add Time Entry button to create additional rows and calculate several durations together.

Can the result be negative?

Yes. If the amount you subtract is greater than the time being added, the calculator displays a negative duration.

Why are decimal hours useful?

Decimal hours make it easier to multiply time by hourly rates and use time values in payroll, billing, accounting, and spreadsheet calculations.