Free work-time tools

Calculate work hours, time cards and schedules without the spreadsheet

Simple calculators for clock-in and clock-out times, breaks, shifts, weekly hours, time cards and common work schedules.

Browse all calculatorsExplore categories
Built for practical time math
  • No account required
  • Works on mobile and desktop
  • Shows the calculation, not just the answer
  • Focused on time and schedule planning—not legal or payroll advice

Start here

View all →
⏱Time Card CalculatorOpen tool → ⏱Work Hours CalculatorOpen tool → ⏱Clock Out Time CalculatorOpen tool → ⏱Lunch Break CalculatorOpen tool → ⏱Shift Hours CalculatorOpen tool → ⏱9/80 Work Schedule CalculatorOpen tool →

Find your tool

Calculator categories

Time Card & TimesheetsTools and guides for adding clock-in and clock-out entries, breaks, weekly time cards and timesheets. Use…Explore category → Work HoursCalculate daily, weekly, biweekly, monthly and annual work-hour totals. This section focuses on straightforward time arithmetic…Explore category → Clock In & OutFind start times, end times and remaining shift time from the schedule details you enter. These…Explore category → Breaks & LunchSubtract lunch and break time from an elapsed shift, compare gross versus net work time, and…Explore category → Shift TimeCalculate shift length, overnight hours, split shifts and time between shifts. The tools in this section…Explore category → Work SchedulesExplore common compressed and rotating schedule patterns, including 4/10, 9/80, 3x12, 4x12, 2-2-3 and 4-on/4-off examples.…Explore category → Hours GoalsWork backward from a weekly hour target to see what remains, how many hours are needed…Explore category → Time ConversionConvert between hours, minutes and decimal hours, add or subtract hour-and-minute values, and calculate elapsed duration…Explore category → Workdays & DatesCount weekdays between dates, estimate workweeks and work hours across a date range, or add a…Explore category → Pay CalendarsDate-only tools for weekly, biweekly, semi-monthly and monthly pay calendars, pay periods and three-paycheck months.Explore category → Work Calendar PlanningWorkday, days-off and annual shift-count tools for personal schedule planning.Explore category → Commute Time PlanningTime-only commute calculators for daily, weekly and annual commuting time.Explore category → Healthcare SchedulesPlanning tools for common 3x12, 4x12 and rotating healthcare schedule patterns without medical or staffing advice.Explore category → Fire & EMS SchedulesCalendar tools for common 24/48, 48/96, 24/72 and Kelly-style schedule planning.Explore category → Manufacturing SchedulesRotation-planning tools for DuPont, Panama, Continental, Pitman and four-team shift patterns.Explore category → Security & Logistics SchedulesShift planning resources for repeating security, warehouse and logistics rotations.Explore category →

Transparent calculations

Useful answers with the math explained

Each calculator is designed around a specific work-time question. Where useful, the page explains the inputs, formula, assumptions and an example so you can verify the result yourself.

1Enter your times or schedule details.
2Get an instant result with a breakdown.
3Use the guide below the tool to understand the calculation.

Beyond calculators

Templates, charts and generators

Browse resources →
▦Common Work Schedule Patterns Cheat SheetOpen resource → ▦Work Time Formula Cheat SheetOpen resource → ▦Work Hours per Week, Month and Year TableOpen resource → ▦Decimal Time Conversion ChartOpen resource → ▦4/10 Work Schedule TemplateOpen resource → ▦9/80 Work Schedule TemplateOpen resource →

Learn the basics

Latest work-time guides

Work Schedules

How a 4-On 4-Off Schedule Works

Schedule names describe repeating patterns, but real employers can use variations. This guide explains a common planning model…