DollarWise

Free Date Difference Calculator

October 12, 2026 · 2 min read · By the DollarWise team

How it works

Pick any start date and end date and get the exact gap between them: total days, a years-months-days breakdown, and the number of full weeks — handy for deadlines, contracts, trips, and project timelines.

Date Difference Calculator

Exact days between two dates — with a years, months & days breakdown.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Pick the start and end dates

Turn this on when both the first and last day count — for example, hotel nights or leave days.

2 Or use a quick preset range

3 Calculate the difference

📅 Date difference

🎉 Free forever. No sign-up. No credit card. No limits.

This tool runs entirely in your browser — compare as many date ranges as you like, as often as you like.

Everyday uses

  • Project deadlines: count the exact working window between a start date and a delivery date.
  • Travel planning: work out how many days a trip, visa, or rental period actually covers.
  • Contracts and billing: measure subscription periods, notice periods, and payment terms in days and weeks.
  • Personal milestones: find the days between two life events, or how long a habit streak has really lasted.

Frequently asked questions

Does the calculator count both the first and last day? By default it counts the days between the two dates, not including the end date. Tick “Include end date” to add one extra day when both the starting and ending day should count.

How are leap years handled? Automatically. The calculation uses real calendar dates, so February 29 in leap years is counted exactly like any other day.

Can I compare dates far in the past or future? Yes — the date pickers accept any year, so you can measure anything from historical spans to long-term plans decades ahead.