¿Qué es Calculadora de número de semana?

Calculadora de número de semana gratuita en línea. Calcula el número de semana ISO de una fecha y la diferencia entre semanas.

¿Por qué usar Calculadora de número de semana?

  • ISO 8601 week number with ISO year
  • Day of year count with total days in year
  • Quarter number and quarter date range
  • Days remaining in the year and leap year detection
  • Interactive monthly calendar with date highlighted

Cómo usar Calculadora de número de semana — Paso a paso

1

Select a date using the date picker.

2

View the ISO week number and ISO year instantly.

3

See the day of year, days remaining, quarter, and weekday name.

4

Use the monthly calendar reference to visualize the date context.

¿Para quién es Calculadora de número de semana?

  • project scheduling
  • payroll cycle planning
  • academic timetables
  • manufacturing production weeks

Calculadora de número de semana — Preguntas frecuentes

What is ISO week number?

ISO 8601 defines week numbers where week 1 is the week containing the first Thursday of the year. Weeks start on Monday, and each week belongs to the year that contains its Thursday.

How many weeks are in a year?

Most years have 52 weeks, but about every 5-6 years, a year has 53 ISO weeks (e.g., 2020 had 53 weeks). The tool shows the exact week count for the selected year.

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