Time Clock Calculator

  • Stopwatch Timer Calculator - Add & Subtract Lap Times
    Add or subtract stopwatch lap times in mm:ss.s like an adding machine. Keeps a running total that rolls into hours. Perfect for race splits and lap sums.
  • Weekly Work Hours Time Card Calculator
    Free weekly time card calculator. Add daily start and end times plus unpaid breaks to get total work hours in hh:mm and decimal for payroll.
  • Time to Decimal Calculator
    Convert hh:mm:ss duration into decimal hours, decimal minutes, and total seconds. Free time-to-decimal calculator with step-by-step conversion.
  • Time Arithmetic Calculator
    Add, subtract, multiply, or divide spans of time in days, hours, minutes and seconds. Get a normalized result or a unitless time ratio instantly.
  • Hours and Minutes Calculator
    Add and subtract multiple time segments in hours and minutes. Get the total duration normalized to hours, minutes and decimal hours instantly.
  • Time Calculator hh:mm:ss (Add and Subtract Time)
    Adding-machine time calculator. Add and subtract hh:mm:ss values into a running total. Flexible separators (: . - space), negative times, zero-padded result.
  • Minutes to Decimal Hours Converter
    Convert hours and minutes into decimal hours for time cards and payroll. Enter hours and minutes, choose decimals, and get hours in decimal form instantly.
  • Hours, Minutes & Seconds Addition and Subtraction Calculator
    Add and subtract up to five time durations in hours, minutes and seconds, with a repeat multiplier. Get a normalized H:M:S total plus decimal hours, minutes and seconds.
  • Hours and Minutes Add/Subtract Calculator
    Add and subtract multiple time durations in hours and minutes, each repeatable a set number of times. Get the total as hours+minutes, decimal hours, and minutes.
  • Clock Hands Overlap Time Calculator
    Find the exact time the minute and hour hands overlap within any chosen hour. Shows the fraction 60H/11, decimal minutes, and H:MM:SS clock time.
  • Timecode (Frame) Calculator
    Add or subtract two SMPTE timecodes (HH:MM:SS:FF) at 30, 29.97, 60 or 59.94 fps. Supports drop-frame and non-drop-frame, returns total frame count.
  • Georgia Overtime Pay Calculator
    Calculate Georgia overtime pay under FLSA. Enter your hourly rate and weekly hours to find regular pay, time-and-a-half overtime, and total gross pay.
  • California Overtime Pay Calculator
    Calculate California overtime and double-time pay. Enter your hourly rate plus regular, OT (1.5×) and double-time (2×) hours to get gross pay.
  • Florida Overtime Pay Calculator
    Calculate Florida overtime pay. Florida follows federal FLSA: 1.5× your rate for hours over 40 per week. Enter your rate and hours for weekly gross pay.
  • Hourly Wage Calculator
    Convert total pay and hours worked into your hourly wage. See equivalent daily, weekly, and annual pay instantly with this free hourly wage calculator.
  • Hours Pay Calculator
    Calculate your total pay from hours worked and your hourly rate. Free hours pay calculator with instant results for hourly wage earners.
  • Time Calculator (Time + Elapsed Time)
    Add or subtract an elapsed duration to a clock time. Enter a start time and hours/minutes/seconds to find the resulting time, including day rollover.
  • Elapsed Time Between Two Times Calculator
    Calculate the elapsed time between a start time and an end time. Get the duration as H:MM:SS and totaled in hours, minutes, and seconds, with overnight rollover.
  • Reverse Time Calculator
    Reverse Time Calculator: subtract hours and minutes from a known end time to find the start time. Handles wrapping across midnight automatically.
  • Time Percentage Calculator
    Calculate what percentage one time duration is of another. Enter part and whole in hours, minutes and seconds to get the exact percent.
  • Wake-Up Time Calculator
    Find the best time to wake up based on 90-minute sleep cycles. Enter your bedtime and fall-asleep time to see refreshing wake times for 4, 5, and 6 cycles.
  • Add Time Calculator
    Add hours, minutes and seconds to a start time. Get the resulting 24-hour clock time with automatic day-overflow handling. Free and instant.
  • 8-Hour Shift Calculator
    Calculate net hours worked and gross pay for an 8-hour shift. Enter start, end, break minutes and hourly rate to get worked hours and pay instantly.
  • Pomodoro Technique Calculator
    Calculate the total time for your Pomodoro study or work plan, including work sessions, short breaks, and long breaks after every 4th cycle.

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