---
title: "Date Difference Calculator — Days, Weeks, Months Between Two Dates"
description: "Calculate the exact difference between two dates in days, working days, weeks, months, and years. Includes public holiday counts by country for accurate working day calculations."
url: "https://worldcalculators.org/calculators/date-difference/"
canonical: "https://worldcalculators.org/calculators/date-difference/"
---

# Date Difference Calculator

Calculate the exact difference between two dates in days, working days, weeks, months, and years. Includes public holiday counts by country for accurate working day calculations.

## Quick answer

Days between two dates = later date − earlier date (counting every calendar day). For working days, subtract weekends and public holidays. The US has 261 working days/year; Japan has 249 (16 holidays); India has ~240 (21 national holidays). Leap years add 1 day to February (divisible by 4, except centuries must be divisible by 400).

## Working Days vs Calendar Days: Country Differences

The calculator above counts Monday–Friday as working days (excluding weekends). However, public holidays vary significantly by country:

## Date Formats Around the World

An often-overlooked difference: the date "01/02/03" means three different things:
The ISO 8601 standard (YYYY-MM-DD) was created specifically to eliminate this ambiguity in international communication. It is required by the EU and used in computing, science, and international contracts.

Source: https://worldcalculators.org/calculators/date-difference/
Markdown mirror of the HTML page. Prefer this URL for RAG; the interactive calculator still lives on the HTML page.