How it's calculated
We take the absolute number of days between the two dates, then express it as weeks, months and years as well.
Find how many days, weeks, months and years lie between any two dates.
Difference
0 days
0 years · 0 months · 0 days
Difference: 0 days
1 Jan 2026 → 31 Dec 2026
That's 52 weeks, or about 12 months.
364 days
Two project milestones
Also shown in weeks, months and years.
100 days apart
How the figures above are worked out — the rules, rates and reasoning behind every line.
Pick a start and end date to see the gap between them, useful for deadlines, anniversaries, notice periods and planning.
We take the absolute number of days between the two dates, then express it as weeks, months and years as well.
Enter both dates and the calculator returns the exact day count, plus the equivalent in weeks, months and years.
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