7:30 and 7.30 differ
As a duration, 7:30 means 7 hours and 30 minutes. A decimal duration of 7.30 hours means 7 hours and 18 minutes: 0.30 × 60 = 18.
SMALL DETAIL. DIFFERENT NUMBER.
Half an hour.
Not point thirty.
An hour has 60 minutes. Decimal hours express minutes as a fraction of an hour. Learn to spot the difference before you read your next timecard.
Try six quick examples ↘Free browser practice · No signup · No data saved
½
30 MINUTES
= 0.50 HOURSOne hour. Two ways to write it.TRY IT / SIX CARDS
Which number belongs
on this timecard?
Choose the same duration expressed in decimal hours. These are fictional examples, not a test of your payroll system.
Card 1 of 6
HOURS : MINUTES → DECIMAL HOURS
7 hours 30 minutes
Choose an answer to see the math.
THE RULE TO KEEP
Divide the minutes by 60.
Then add the whole hours.
7 + (30 ÷ 60) = 7.50
Read the column label
Check whether a timecard shows hours:minutes or decimal hours. Ask for clarification if the format is unclear. A formatting difference alone does not establish a pay error.
Keep the full minutes
For repeating decimals, retain the original minutes and follow the documented rounding convention. This activity uses examples that convert exactly to two decimal places.
| Minutes | Fraction of an hour | Decimal hours |
|---|---|---|
| 15 | One quarter | 0.25 |
| 30 | One half | 0.50 |
| 45 | Three quarters | 0.75 |
| 60 | One whole | 1.00 |
NEXT: KEEP YOUR OWN SHIFT RECORD
Make payday
easier to review.
EarnCheck lets you record shifts and compare estimated gross earnings with a pay statement. Keep the arithmetic beside the record.
View EarnCheck on the App Store ↗Free tier and optional Pro subscription. See the listing for current pricing and limits. Requires iOS / iPadOS 18 or later.
KEEP THREE THINGS
- Your actual shift times
- Your unpaid breaks
- The timecard's number format
Review differences with the relevant records before drawing conclusions.
A couple of useful answers
Is 8.25 hours the same as 8 hours 25 minutes?
No. 8.25 hours means 8 hours 15 minutes. The decimal part is a fraction of 60 minutes.
Is this the EarnCheck app?
No. This is a separate educational browser companion from Honest Little Apps, the publisher promoting EarnCheck. The exercise is not an app screenshot or a demonstration of native app functionality.
Does the practice save my answers?
No. Answers stay in this page's memory and disappear on refresh. No account or tracking script is used here; the hosting service may process standard request logs.