Herramientas de Fecha y Hora

Calculadora de Diferencia de Fechas — Herramienta Gratuita en Línea

Calcula el número de días, semanas y meses entre dos fechas.

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Funciona en Tu Navegador
Resultados Instantáneos
100% Privado

Start Date

End Date

Your result will appear here.

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What Is a Date Difference Calculator?

A date difference calculator computes exactly how much time separates two dates — in total days, weeks, and approximate months and years — so you don't need to count on a calendar or account for varying month lengths and leap years by hand.

It's useful for anything from calculating a project deadline's remaining runway to figuring out how many days until (or since) a significant event.

¿Quién Usa Esta Herramienta?

Para Empresas

Calculate the number of days remaining until a project deadline.

Para Uso Personal

Calculate how many days until a wedding, trip or other event.

Para Estudiantes

Calculate the number of days between an assignment's start and due date.

Para Oficinas

Calculate the exact duration of a contract or leave period.

Por Qué Usar Esta Herramienta

Características Clave

Multiple Units at Once

See the difference in days, weeks, months and years simultaneously.

Instant Calculation

Results update immediately as you pick both dates.

Direction Detection

Clearly shows whether the end date is before or after the start date.

100% Private

Calculated entirely in your browser — nothing is transmitted.

El Resultado

Beneficios

No Manual Calendar Counting

Skip counting days by hand across months of different lengths.

Accounts for Leap Years

Calculations correctly account for leap years automatically.

No Software Needed

Calculate directly in the browser — no spreadsheet formula required.

Paso a Paso

Cómo Usar Calculadora de Diferencia de Fechas

Choose a Start Date

Pick the earlier date.

Choose an End Date

Pick the later (or earlier) date to compare against.

Read the Difference

See the exact difference in days, weeks, months and years.

Especificaciones

Detalles Técnicos

Detalle	Valor
Entrada	Two calendar dates, selected via your browser's native date picker
Procesamiento	Not applicable — single date-pair comparison
Salida	Exact day-count difference; month/year figures are calendar-based approximations

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Privacidad y Seguridad

Lo que realmente sucede con tu archivo al usar esta herramienta.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

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Consejos

Use Total Days for Precise Calculations

The "total days" figure is exact; months and years are approximate averages.

Order Doesn't Matter

You can enter the later date as the "start" date — the tool reports the absolute difference either way.

Preguntas Frecuentes

Yes — the total number of days is calculated exactly, including leap years.

They are close approximations based on average month/year lengths, since calendar months vary from 28 to 31 days.

The tool reports the same absolute difference and clearly notes that the end date is before the start date.

No — the calculation happens entirely in your browser.

Dates are compared as calendar days, so time zone differences within a single day do not affect the result.

Yes — set either date to today and the other to any future or past date you like.