Time & productivity calculators

Time & Productivity Calculators for Pay, Scheduling, and Focus

Convert time to pay, plan schedules, count dates and work days, and run focus timers — all locally, with assumptions visible.

Built for employees, freelancers, students, managers, and anyone tracking time or focus. Inputs stay local unless a tool clearly says otherwise.

Modeled default comparison

Compare pay and schedule tools at a glance

TaskToolTypical modeled inputsWhat it helps you decide
Time cardOpen Time card fee calculatorClock in/out, breaks, pay rateDaily and weekly totals plus gross pay
Pay conversionOpen Pay conversion fee calculatorAnnual/salary or hourly, hours per weekEquivalent hourly or annual pay
OvertimeOpen Overtime fee calculatorRegular rate, hours, overtime multiplierRegular vs overtime earnings
Date spanOpen Date span fee calculatorTwo dates, unit (days/weeks/months)Elapsed or remaining time between dates

Modeled comparisons use each tool's editable defaults. Pay results are estimates; verify your employer's rules, tax, and overtime policy.

Decision support

Use these tools before money changes hands

Pay yourself correctly

Convert time to pay, check overtime, and total time cards before payday.

Plan the schedule

Count dates, work days, and elapsed time for projects and deadlines.

Protect focus

Run pomodoro, countdown, or stopwatch sessions to structure deep work.

Tool cluster

Recommended tools

Browse all tools →
Featured

Time Card Calculator

Calculate work hours, lunch deductions, overtime, and estimated gross pay.

Featured

Salary to Hourly Converter

Convert annual salary to hourly, weekly, biweekly, and monthly equivalents.

Featured

Overtime Calculator

Estimate regular and overtime pay with editable thresholds and overtime multipliers.

Featured

Time to Decimal Calculator

Convert hours and minutes to decimal hours for payroll and timesheets , and decimal hours back to hours and minutes.

Useful

Hours and Minutes Calculator

Add or subtract hours and minutes and show decimal-hour equivalents.

Useful

Date Difference Calculator

Calculate elapsed years, months, weeks, and days between two dates.

Useful

Business Days Calculator

Count weekdays between two dates with an optional number of excluded holidays.

Useful

Date Calculator Workspace

Compare dates or add and subtract calendar units with leap-day and month-end handling.

Useful

Paycheck After Tax Calculator

Estimate 2026 federal and FICA withholding with clearly labeled state planning estimates.

Useful

Pace Calculator

Calculate your running pace per km or mile from distance and time, plus speed and predicted race times.

Useful

Pomodoro Timer

Focus with work and break intervals — set focus minutes, short and long breaks, and run the Pomodoro timer in your browser. Free, no signup.

Useful

Countdown Timer

Set a countdown and get notified when time is up.

Useful

Stopwatch

Time events with lap tracking — start, stop, and record laps to hundredths of a second. Free, private, runs locally in your browser.

Trust model

Useful pages, not thin pages

These collections group existing tools around real decisions. The calculators keep assumptions visible, link to related tools, state important limitations, and point toward quality evidence so you can verify inputs before relying on a result.

FAQ

Common questions

Are pay estimates exact?

No. Overtime rules, tax, benefits, and employer policies vary. These are planning tools to check before relying on a number.

Which time tool should I use?

Start with the task: time card, pay conversion, overtime, date math, or a focus timer. The hub links the related tools.

Do the timers need an account?

No. Timers run locally in your browser and store nothing unless you choose to export.