Date & Time
Instant, private, and free
Calculate the days, weeks, months, and years between two dates.
Set your values
Results update as you type.
30days
1 month
Years: 0 ·Months: 1 ·Weeks: 0 ·days: 0
Pick a start and end date to see the total number of days, plus a breakdown in weeks, months, and years.
How does this calculator count months?
It uses calendar-aware month counting, so a span from Jan 31 to Feb 28 counts as a partial month, not a full one. Variable month lengths are handled correctly.
What if my end date is before my start date?
The calculator still works and shows the absolute duration. A small note flags that the end date is earlier than the start date.
Does this count leap years?
Yes — using real Date arithmetic means leap days are automatically included in the total day count.
Date et Heure
Instantané, privé et gratuit
Calculez les jours, semaines, mois et années entre deux dates.
Saisissez vos valeurs
Les résultats se mettent à jour pendant la saisie.
30Jours
1 month
Années: 0 ·Mois: 1 ·Semaines: 0 ·Jours: 0