Calculate time differences, convert hours, track work shifts, find working days, calculate your age, and solve everyday time-related calculations quickly. Free, no sign-up, available in English, Portuguese, and Turkish.
Popular Calculators
Start with some of the most useful calculators on CalculatorSpan.
Time Calculator
Add, subtract, and calculate time.
Date Difference Calculator
Find the difference between two dates.
Timecard Calculator
Calculate total work hours.
Age Calculator
Find your exact age in years, months, and days.
Hours and Minutes to Decimal Calculator
Convert work time into decimal hours for payroll.
Countdown Timer Online
Count down to any date, or run a timer.
Time Calculators
Add, subtract, and convert time, or work out what time it was and will be.
Time Calculator
Add or subtract hours, minutes, and seconds.
Hours Ago Calculator
Find the exact time and date from hours ago.
Hours From Now Calculator
Find the future time and date after any number of hours.
How Long Until 12:00 AM?
See how much time remains until midnight.
Countdown Timer Online
Count down to any date, or run a timer with sound.
Arrival Time Calculator
Calculate when you will arrive at your destination.
Break Time Calculator
Calculate break duration and remaining work time.
Date Calculators
Count days, weeks, and working days between any two dates, or move forward and back on the calendar.
Date Difference Calculator
Calculate the difference between two dates.
Date Calculator
Add or subtract days, weeks, months, or years from any date.
Age Calculator
Find your exact age in years, months, and days.
Working Days Calculator
Calculate working days between two dates.
Days Until Calculator
Count the days remaining until any future date.
Days Left in the Year
See how many days remain in the current year.
Weeks Left in the Year
See how many weeks remain in the current year.
Work and Payroll Calculators
Track shifts, total up timesheets, convert hours for payroll, and plan delivery windows.
Timecard Calculator
Calculate daily and weekly work hours.
Hours and Minutes to Decimal Calculator
Convert hours and minutes into decimal hours.
Time and a Half Calculator
Calculate overtime pay at time and a half.
Lead Time Calculator
Calculate lead time and expected completion dates.
Time Converters
Switch between time formats, time zones, and timestamps.
Decimal to Time Calculator
Convert decimal hours back into hours and minutes.
Military Time Converter
Convert between standard and 24-hour military time.
Time Zone Converter
Convert a time between cities and time zones.
Unix Timestamp Converter
Convert Unix timestamps to readable dates and back.
Calculadoras em Português
A versão em português do CalculatorSpan.
Calculadoras em Português
Acesse a versão em português do CalculatorSpan.
Calculadora de Tempo
Faça cálculos de horas, minutos e segundos.
Calculadora de Diferença Entre Datas
Calcule a diferença entre duas datas.
Calculadora de Datas
Some ou subtraia dias, semanas, meses ou anos de uma data.
Calculadora de Idade
Descubra sua idade exata em anos, meses e dias.
Calculadora de Dias Úteis
Calcule os dias úteis entre duas datas.
Calculadora de Horas Atrás
Descubra que horas eram há determinado tempo.
Calculadora de Horas a Partir de Agora
Descubra o horário após qualquer número de horas.
Calculadora de Horário de Chegada
Calcule a que horas você vai chegar ao seu destino.
Contagem Regressiva Online
Faça uma contagem regressiva até qualquer data.
Calculadora de Decimal para Horas
Converta horas decimais em horas e minutos.
Conversor de Timestamp Unix
Converta timestamps Unix em datas legíveis.
Türkçe Hesaplayıcılar
CalculatorSpan’in Türkçe sürümü.
Türkçe Hesaplayıcılar
CalculatorSpan’in Türkçe sürümüne gidin.
Yaş Hesaplama
Yaşınızı yıl, ay ve gün olarak hesaplayın.
Tarih Hesaplama
Bir tarihe gün, hafta, ay veya yıl ekleyin ya da çıkarın.
Saat Önce Hesaplama
Belirli bir saat önce saatin kaç olduğunu bulun.
Saat Sonra Hesaplama
Belirli bir saat sonra saatin kaç olacağını bulun.
Varış Saati Hesaplama
Varış noktanıza ne zaman ulaşacağınızı hesaplayın.
Geri Sayım Sayacı
Herhangi bir tarihe geri sayım yapın.
Ondalık Saat Çevirme
Ondalık saatleri saat ve dakikaya çevirin.
Unix Zaman Damgası Dönüştürücü
Unix zaman damgalarını okunabilir tarihlere çevirin.
Simple Tools for Everyday Calculations
CalculatorSpan provides free online calculators for common time, date, and work-related calculations. You can calculate the time between two events, track work hours, convert time formats, compare time zones, or find the difference between dates.
The tools fall into four groups:
- Time calculators work with the clock. They add durations, find a past or future moment, and count down to a target.
- Date calculators work with the calendar. They return whole days, weeks, or business days between two points, or shift a date forward or back.
- Work and payroll tools total shifts, handle overtime, and cover delivery planning.
- Converters move a value from one format to another without changing what it means. That includes decimal hours, 24-hour time, time zones, and Unix timestamps.
Our calculators are simple, fast, and easy to use on desktop and mobile. Enter your values and get your result without unnecessary steps. Every tool is free, needs no sign-up, and is available in English, with many also in Portuguese and Turkish.
Frequently Asked Questions
Are CalculatorSpan calculators free?
Yes. Every calculator on CalculatorSpan is free to use, with no account or sign-up required.
Can I use these calculators for payroll?
Yes. The Timecard Calculator totals daily and weekly hours. The Hours and Minutes to Decimal Calculator converts that time into the decimal format most payroll systems use. The Time and a Half Calculator handles overtime pay.
Do the calculators work on mobile?
Yes. All tools are built to work on phones, tablets, and desktop browsers.
Which languages are available?
CalculatorSpan is available in English, Portuguese, and Turkish. You can switch using the language sections above.