Holiday Hours to Shifts Calculator

How to convert holiday hours into shifts

To work out how many shifts your holiday balance represents, you need two figures:

• your holiday balance in hours
• your normal paid shift length

Then divide the holiday balance by the shift length.

For example: 60 hours holiday with a 7h 30m paid shift.

7h 30m is 7.5 hours.

60 ÷ 7.5 = 8 shifts

Therefore: 60 hours of holiday = 8 full 7.5-hour shifts

Full shifts vs equivalent shifts

A holiday balance does not always divide neatly into a whole number of shifts.

For example: 75 hours holiday with an 8-hour paid shift.

75 ÷ 8 = 9.375 shifts

That result is mathematically correct, but it is often more useful to describe it as:

9 full shifts + 3 hours remaining

Both figures are useful:

• Equivalent shifts: 9.375
• Full shifts available: 9
• Remaining holiday: 3 hours

The Hundred Hour calculator shows the result in a more practical way so you do not have to interpret the decimal yourself.

Worked example: 68 hours 30 minutes of holiday

Suppose your holiday balance is 68h 30m and your normal paid shift is 7h 30m.

Nine full shifts use:

9 × 7h 30m = 67h 30m

That leaves: 1 hour

So your holiday balance represents: 9 full shifts + 1 hour remaining

The equivalent shift value is slightly more than 9 shifts, but the full-shift-plus-remainder result is often easier to understand.

Use your paid shift length

When converting holiday hours into shifts, use the number of paid hours in your normal shift rather than simply the time between starting and finishing.

For example, you work from 08:00 to 16:00.

That is 8 hours from start to finish.

If you have 30 minutes unpaid break, your paid shift length is 7h 30m.

So the useful figure for the conversion is normally 7h 30m, not 8 hours.

How leave is recorded can vary between employers, so check your workplace rules if you are unsure which shift length to use.

What if your shifts are different lengths?

If every shift is the same length, converting holiday hours into shifts is straightforward.

If your shifts vary, one single shift count may only be an estimate.

For example, you might work:

• 6-hour shifts
• 8-hour shifts
• 10-hour shifts

A 60-hour holiday balance could cover:

• 10 six-hour shifts
• 7 full eight-hour shifts with 4 hours remaining
• 6 ten-hour shifts

So the number of actual shifts your balance covers depends on which shifts you take as leave.

If your shifts vary, use a shift length that matches the type of shift you are trying to understand, rather than assuming every day is the same.

Why holiday hours can be more useful than holiday days

A leave balance shown only in days can be misleading if working days have different lengths.

For example, one worker may have 7.5-hour shifts. Another may have 10-hour shifts.

Ten hours of holiday means something very different to each person when expressed as a fraction of a shift.

Showing the balance in hours keeps the amount of leave precise.

You can then convert those hours into shifts based on your own working pattern.

Holiday hours vs holiday entitlement

This page is about converting a holiday balance you already know.

It is not the same as calculating how much statutory annual leave you are entitled to.

For example, if your employer tells you that your current holiday balance is 96 hours, Hundred Hour can help you work out how many of your normal shifts that represents.

If you need to check how much annual leave you should receive in the first place, use official GOV.UK holiday entitlement guidance or speak to your employer.

Holiday hours with partial shifts

An hourly leave balance also makes it possible to understand partial shifts.

For example: 52 hours holiday with an 8-hour shift.

52 ÷ 8 = 6.5 shifts

This can be expressed as: 6 full shifts + 4 hours

That may be much easier to use than simply seeing 6.5 shifts.

Another example: 47h 30m holiday with a 7h 30m shift gives:

6 full shifts + 2h 30m remaining

This is why showing both full shifts and remaining time is useful.

Holiday hours to shifts examples

These examples assume the same paid shift length is used throughout.

What if you have holiday taken or already booked?

Your employer may show several different leave figures, such as:

• total allowance
• holiday already taken
• holiday booked
• remaining balance

The number you use for a holiday-hours-to-shifts calculation depends on what you want to understand.

For example, if you want to know how much leave is still available to book, use the remaining unallocated balance.

If your current available balance is 90 hours and your normal paid shift is 7h 30m, then:

90 ÷ 7.5 = 12 shifts

So you have the equivalent of 12 normal shifts still available.