## Operations

### To / Until

Get how many hours and minutes there are between two or more times.

• 9 to 5 = 8h
• 9am to 9pm to 5:30am = 20h 30m

### Subtraction

Subtract hours and minutes from a time.

• 10:30am – 1:30h = 9am

Subtract hours and minutes from other hours and minutes.

• 9h – 2h = 7h
• 3h – 6h – 2h = -5h

You can also subtract one time from another time and get the inverse of a to operation.

• 9am – 5pm = 16h

Add hours and minutes to a time.

• 1am + 4h = 5am

• 8:07h + 9:13h = 17:20h

Adding two times together will convert the second time into hours and minutes and add it to the first.

• 9am + 10am = 9am + 10h = 7pm
• 10am + 3pm = 10am + 15h = 1am
• 09:00 + 17:50 = 9am + 17:50h = 2:50am

### Now

The now button will add the current time of day to the expression.

If the current time is 9pm:

• now + 8h = 5am
• now to 7:30am = 10h 30m

## Entering Expressions

Multiple values and operators can be entered in the same expression.

• 9am to 5pm – 12:00pm to 12:30pm = 7:30h

Times can be entered in a wide range of styles and formats.

• 9, 9:00, 900, 9:00am, 900am, 9:30am
• 0900, 930, 09:00

Amounts of hours and minutes are entered using the h button.

• 9:30h = 9 hours and 30 minutes

## Settings

### Time Mode

Sets whether times entered should be treated as 12 or 24 hour format.

• 12 hour: 9 to 5 = 8h
• 24 hour: 9 to 5 = 09:00 to 05:00 = 20h

Selecting Mixed will allow both 12 and 24 hour times to be entered into the same expression and the result will be adjusted accordingly.

• 9am + 1h + 15:00 + 1h + 17:00 + 1h = 20:00
• 9am + 1h + 3:00pm + 1h + 17:00 + 1h = 8pm

### Display Format

Sets the style of the result.

Simplified format removes empty values and expands hours and minutes values into days, hours and minutes where required.

• 9:00am = 9am
• 26:15h = 1d 2h 15m
• 24:00h = 1d

Standard format displays all results as hours and minutes.

• 9:00am = 9:00am
• 26:15h = 26:15h

## Time Conversions

Time to Time can also be used to convert times between 12 and 24 hour formats.

Set the time mode to 12 hour then enter a 24 hour time to get its result as a 12 hour time.

• 17:30 = 5:30pm

The same works for 12 hour times entered when set to 24 hour mode.

• 5:30pm = 17:30

You can also set the display format to Simplified and find the amount of days from hours.

• 52h = 2d 4h