In short: 100 days before today was Saturday, April 11, 2026. That's 14 weeks and 2 days, counting every calendar day including weekends.
Other common day counts
| Days ago | Date |
|---|---|
| 7 days ago | — |
| 10 days ago | — |
| 14 days ago | — |
| 15 days ago | — |
| 20 days ago | — |
| 21 days ago | — |
| 30 days ago | — |
| 40 days ago | — |
| 45 days ago | — |
| 50 days ago | — |
| 60 days ago | — |
| 90 days ago | — |
| 120 days ago | — |
| 150 days ago | — |
| 180 days ago | — |
| 200 days ago | — |
| 270 days ago | — |
| 365 days ago | — |
Need a different number? Try the date calculator.
Count the days since, automatically
Milestones that count up
Add any past date to Kounts as a Milestone and it counts the days since — streaks, anniversaries, days smoke-free — right on a widget.
Free, with no ads
Kounts is free on iPhone and Apple Watch, with beautiful cards, widgets, Live Activities and reminders included. Your events never leave your device.
Frequently asked questions
What date was 100 days ago?
Counting 100 calendar days back from today lands on Saturday, April 11, 2026 (as of the last update — this page recalculates live from your device's date). 100 days is the same as 14 weeks and 2 days.
How is 100 days ago calculated?
The calculator counts 100 full calendar days back from today's date in your own time zone, including weekends. Every day of the week counts — it's calendar days, not business days.
How do I count the days since a date?
Kounts also counts up: add a past date as a Milestone and it tracks the days since — streaks, anniversaries, days smoke-free — on a card and a Home Screen widget.
Never lose track of a date again
A free, ad-free countdown app with beautiful cards, widgets and an Apple Watch app — counting down to what's next, and up from what matters.
See also: All date calculators · Days until… · Days since counter app