Czas & data Kalkulatory

Hours Kalkulator

Add and subtract hours and minutes for scheduling. Enter time values — see total duration with decimal hours conversion. Free.

Hours & Minutes Kalkulator

Perform time arithmetic with hours and minutes. Enter your times — see the total with AM/PM format and decimal conversion. Free.

Time Kalkulator

Add, subtract, multiply, and divide time values. Enter your hours and minutes — see the result with decimal conversion. Free.

Work Hours Kalkulator

Calculate total work hours for any period. Enter start and end times with breaks — see regular hours, overtime, and weekly totals. Free.

Timer Odliczający

Count down to any future date or event. Enter the target date — see days, hours, minutes, and seconds remaining. Free.

Stoper

Use a digital stopwatch with lap tracking. Enter laps — see split times, total time, and fastest/slowest lap comparison. Free.

Age Kalkulator

Oblicz dokładny wiek w latach, miesiącach, dniach, godzinach i minutach. Wprowadź datę urodzenia — zobaczysz swój precyzyjny wiek i następne urodziny. Bezpłatny.

Date Różnica Kalkulator

Calculate the exact number of days, weeks, and months between two dates. Enter start and end date — see all units with weekday count. Free.

Date Kalkulator

Add or subtract days, weeks, or months from any date. Enter a date and duration — see the resulting date with day of week. Free.

Kalkulator Dni i Dni Roboczych

Count days between dates with business days option. Enter start and end dates — see total days, business days, and weekends. Free.

Dzień Tygodnia

Find the day of the week for any date in history or the future. Enter the date — see day name, day number, week number, and calendar facts. Free.

Ile Mam Lat?

Calculate your exact age in years, months, days, hours, and minutes. Enter date of birth — see precise age with next birthday countdown. Free.

Time na Dziesiętny

Convert time in hours and minutes to decimal hours. Enter HH:MM — see decimal hours for timesheet, billing, and payroll calculations. Free.

Dziesiętny na Time

Convert decimal hours to hours and minutes. Enter decimal time (e.g. 2.75) — see HH:MM format for timesheets and billing. Free.

Military Time Konwerter

Convert between 12-hour and 24-hour (military) time. Enter either format — see the other with AM/PM and 24h equivalents. Free.

Hours na Minutes

Convert hours to total minutes. Fast and accurate result with formula, step-by-step method and unit overview. Free tool.

ISO Week Liczba Kalkulator

Find the ISO 8601 week number for any date. Enter your date — see week number, year, and first/last day of that week. Free.

Quarter of Year Kalkulator

Find which fiscal or calendar quarter any date falls in. Enter your date — see quarter number, Q start/end dates, and days remaining. Free.