24 hour time calculator

Everhour Timesheets support approved payroll and billing review after 24-hour time entries become clean work-hour totals.

How much did you earn this week?

Enter your daily hours and rate to instantly calculate total hours, regular pay, and any overtime — no spreadsheet needed.

$
Weekly gross pay
Regular hours40h
Overtime hours0h
Regular pay$1,400.00

Everhour does it all — track, budget, report & invoice

The calculator gives you the number — Everhour takes it from there.

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Works with your favorite tool:
Everhour — Time Tracking
Time Entries
01:24:00
00:31:00
01:07:00

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Set a budget, assign rates, and get alerted before you're over.

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Everhour — Budgeting
Acme Web Project
1
50% of budget used
$2,500.00of $5,000.00
$2,500.00 remaining
75%
Actual costRemaining cost

Measurement

Track your budget through time or costs

Simple, customizable reports

Every report you need — configured your way, always up to date.

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Everhour — Reports

Your invoice is ready!

Tracked hours flow straight into a polished invoice — no copy-paste, no manual math.

  • Billable hours straight into the invoice
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  • Invoicing dashboard with status
Everhour — Invoices
Your Company LLChello@yourcompany.com
INVOICE
Invoice #1042
Group by:
DescriptionHoursRateAmount
Website Redesign14h$150/h$2,100.00
Brand Guidelines7h$150/h$1,050.00
Marketing Strategy3.5h$150/h$525.00
Total Due$3,675.00
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Turning clock times into work hours

What this calculation answers

A 24-hour time calculation answers one practical question: how many work hours sit between a start time and an end time. A timesheet may show 08:00 to 17:00, 13:15 to 18:45, or 22:00 to 06:30. The output is a duration, usually in hours and minutes first, then decimal hours for payroll or billing.

This format helps when U.S. timesheet inputs arrive in mixed styles. The standard U.S. English short time pattern uses a 12-hour AM/PM format, so 24-hour time reduces mistakes around noon, midnight, and late shifts. A clean calculation still needs the same inputs: start time, end time, unpaid break time, and the work date or shift boundary.

Convert the time span correctly

For same-day shifts, subtract the start time from the end time. For shifts that cross midnight, add the hours before midnight to the hours after midnight. A shift from 22:00 to 06:30 equals 2 hours before midnight plus 6.5 hours after midnight, for 8.5 gross hours.

Subtract only unpaid break time from the gross span. In this example, a 30-minute unpaid meal period leaves 8 paid hours. At $22 per hour, the straight-time gross pay check is $176. Short breaks of about 5 to 20 minutes provided by an employer are compensable hours worked under federal law, while a bona fide meal period is generally unpaid only when the employee is completely relieved of duty.

Watch the format traps

The largest 24-hour time mistake is treating minutes like hundredths. A shift ending at 16:30 does not end at 16.30 decimal hours. Thirty minutes equals 0.5 hours because payroll decimals use minutes divided by 60. A 07:45 to 15:15 span equals 7 hours and 30 minutes, which becomes 7.5 hours.

Midnight and noon also create errors. In 24-hour time, 00:00 is midnight and 12:00 is noon. A shift from 23:30 to 00:30 is 1 hour, not a negative span. Federal time-clock rounding to the nearest 5 minutes, tenth, or quarter-hour is accepted only when the practice averages out over time and does not underpay employees for actual hours worked.

When calculation becomes workflow

A one-off 24-hour calculation is enough when you need to check one shift, convert one timecard, or confirm one invoice line. It is also enough for a quick correction before a manager approves a weekly sheet. The result should show gross span, unpaid break deduction, and final paid or billable hours.

A managed workflow becomes necessary when multiple people submit time every week, managers need an approval trail, or payroll and billing require locked records. Everhour Timesheets collect weekly project hours and working hours by person, let users submit time for review, and let admins approve, reject, partially approve, or lock entries before payroll or billing review.

This content is for general information only, may not be fully up to date, and is provided without any warranty or liability.

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Frequently Asked Questions

How do you calculate hours from 24-hour time?

Subtract the start time from the end time when both times fall on the same day. For an overnight shift, count the hours from the start time to midnight, then add the hours from midnight to the end time. Subtract unpaid breaks after finding the gross span.

How do you convert minutes to decimal hours?

Divide minutes by 60. Fifteen minutes equals 0.25 hours, 30 minutes equals 0.5 hours, and 45 minutes equals 0.75 hours. Payroll and billing systems usually need decimal hours, so 8 hours and 30 minutes becomes 8.5 hours, not 8.30 hours.

How do you handle a shift that crosses midnight?

Treat midnight as the point where the clock resets from 23:59 to 00:00. A 21:00 to 05:00 shift equals 3 hours before midnight plus 5 hours after midnight, for 8 total hours before unpaid break deductions.

Is a lunch break paid or unpaid in a 24-hour time calculation?

Federal law does not require lunch or coffee breaks for adult employees. When an employer provides short breaks, usually about 5 to 20 minutes, federal law treats them as paid hours worked. A bona fide meal period is generally unpaid only when the employee is completely relieved from duty.

Does 24-hour time change overtime rules?

The time format does not change overtime rules. In the United States, covered, nonexempt employees must receive overtime pay for hours worked over 40 in a fixed FLSA workweek, at not less than one and one-half times the regular rate. State law or employer policy can add stricter rules.

How does Everhour support approved 24-hour timesheet review?

Everhour Timesheets collect weekly project hours and working hours by person, so managers can review totals before payroll or billing. Users submit time for approval, and admins can approve, reject, partially approve, or lock submitted entries when corrections are complete.

How does Everhour help teams compare working hours with project time?

Everhour timecards can track clock-in, clock-out, breaks, and daily work-hour totals. Teams that also track task time can compare working hours with project hours, which helps managers spot missing entries before payroll or client billing review.

Approve cleaner timesheets

Turn one-off 24-hour calculations into approved weekly records. Everhour Timesheets collect working and project hours, route submissions for review, and lock approved entries for cleaner payroll and billing review.

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