Skip to main content

Date Calculators

Pick a span and get the date, the weekday, a business-day count, and the calendar month it lands in. Each page answers in UTC and in your own time zone, and shows the single line you would type in Notes Calculator to get the same answer. For clock math, see the time calculators.

Count days from today

Calculating in your time zone...

In Notes Calculator, type today + 30 days and the answer appears as you type.

Download free Try it in your browser

Days from today

Days ago

Weeks from today

Weeks ago

Do date math where you write.

Notes Calculator is free to start and runs in your browser. Dates, units, percentages, and variables in one plain-text notepad.

Open the free web app See pricing

Free forever plan · No credit card · Cross-platform