All Calculators

Browse all 17 WorkHoursGuide calculators for work hours, time cards, payroll, time conversion, PTO planning, business days, and billable work. Use the search or category filters to jump directly to the tool you need.

Calculator directory

Find the right work-time calculator

Each tool is designed for a different job, so you can calculate exactly what you need without forcing one oversized calculator to do everything.

No calculator matches that search. Try a simpler term such as hours, pay, time card, or PTO.

Work Hours & Shifts

Calculate shifts, leave times, breaks, overnight work, and elapsed time.

7 tools
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Work Hours Calculator

Calculate hours worked from start and end times, subtract unpaid breaks, handle overnight shifts, and optionally estimate pay.

Start & endBreaksPay
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Weekly Hours Calculator

Add daily hours for the week, compare against a target, see overtime, decimal hours, averages, and optional gross pay.

Weekly totalTargetOvertime
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Clock Out Calculator

Find exactly when you can leave based on your start time, required paid hours, unpaid breaks, or hours already worked.

Leave timeCountdown
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Lunch Break Calculator

Find your return-to-work time from a break start and length, or calculate the exact duration of a lunch break.

Return timeBreak duration
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Overnight Shift Calculator

Calculate a shift that crosses midnight, including breaks, before/after-midnight hours, decimal hours, and optional night premium.

Night shiftMidnight
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Time Duration Calculator

Measure exact elapsed time between two clock times or two date-and-time values, including seconds and multi-day spans.

Elapsed timeDates
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Military Time Converter

Convert regular 12-hour time to four-digit military time and back, including noon, midnight, 0000, and 2400.

12h ↔ 24hMilitary

Time Cards & Timesheets

Weekly punches, biweekly pay periods, project hours, and timesheet reporting.

3 tools
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Time Card Calculator

Build a complete weekly time card with punches, breaks, overnight shifts, overtime, estimated pay, and CSV export.

Weekly punchesOT
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Biweekly Time Card Calculator

Calculate a 14-day pay period while keeping Week 1 and Week 2 overtime separate, with optional pay and CSV export.

14 daysTwo weeks
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Timesheet Calculator

Track already-known hours by date, project, client, and task with regular/OT hours, billable status, rates, and project summaries.

ProjectsTasksBillable

Pay & Earnings

Estimate hourly earnings, overtime pay, and salary equivalents.

3 tools
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Overtime Pay Calculator

Calculate overtime from total hours or separate regular/OT hours, including premium-only earnings and optional double time.

Time & a halfPremium
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Hourly Pay Calculator

Estimate gross earnings from regular, overtime, and premium hours, plus optional bonuses, tips, and effective hourly rate.

Gross payHours × rate
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Salary to Hourly Calculator

Convert annual salary into hourly, daily, weekly, biweekly, and monthly equivalents with customizable work hours and weeks.

Annual salaryHourly equivalent

Time Conversion

Convert decimal hours, clock formats, minutes, and seconds.

1 primary tool
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Decimal Hours Converter

Convert hours/minutes/seconds to decimal hours and back, with a minute conversion chart and optional rounding comparisons.

h:mm ↔ decimalPayroll

PTO & Work Planning

Project paid time off and count customizable working days.

2 tools
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PTO Accrual Calculator

Project PTO from annual allowance, fixed accrual per period, or hours worked, including carryover, usage, and balance caps.

PTOAccrualCarryover
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Business Days Calculator

Count business days between dates or add/subtract working days with a customizable workweek and your own holiday dates.

WorkdaysHolidays

Freelance & Professional

Measure billable work, utilization, project revenue, and capacity.

1 primary tool
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Billable Hours Calculator

Track billable/non-billable time by client, calculate utilization, revenue, blended rate, and the gap to a capacity target.

UtilizationRevenueClients

Which calculator should I use?

Start with the question you are trying to answer. If you know a start and end time and want hours worked, use the Work Hours Calculator. If you know your start time and need to find when you can leave, use Clock Out Calculator. If you need a full week of punches, use Time Card Calculator.

WorkHoursGuide keeps similar keywords together only when the calculation is actually the same. Separate tools are used when the user's task changes, which keeps each calculator focused and easier to understand.

Work-time tools vs. payroll tools

Time calculators measure duration, shifts, and schedules. Pay calculators apply rates and multipliers to hours you provide. The pay results on WorkHoursGuide are gross estimates and do not calculate taxes, deductions, or determine which employment rules apply.

Time cards vs. timesheets

A time card is built from clock-in and clock-out punches. A timesheet can instead organize hours you already know by project, client, or task. That is why WorkHoursGuide provides separate tools for those workflows rather than combining them into one page.

Frequently asked questions

Are all WorkHoursGuide calculators free?

Yes. The calculators on this directory are designed to be used without creating an account.

Which calculator should I use to find my total weekly hours?

If you already know each day's hours, use Weekly Hours Calculator. If you have clock-in and clock-out punches for each day, use Time Card Calculator.

Which calculator should I use for an overnight shift?

Use Overnight Shift Calculator when the main issue is a shift crossing midnight. Work Hours Calculator and the time-card tools also support overnight entries.

Which tool converts minutes to decimal hours?

Use Decimal Hours Converter. It converts both directions and supports hours, minutes, and seconds.

Do the pay calculators determine legal overtime or PTO rules?

No. They calculate from the rates, thresholds, accrual rules, and other values you enter. Employment rules vary by employer and jurisdiction.

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