🧰Locly

Calculate Days Between Dates

Calculate whole days between two local calendar dates

Choose both dates, then Calculate

About This Tool

Date Difference Calculator computes whole calendar days between two local dates. You can include or exclude the end date. Math uses your local calendar date values and is processed locally in your browser.

How to Use

  1. Pick a start date
  2. Pick an end date
  3. Optionally include the end date
  4. Click Calculate
  5. Read the day count

Common Use Cases

  • Project duration estimates
  • Trip length counts
  • Invoice period days
  • Countdown planning
  • School calendar spans

FAQ

Q1: Are times of day included?

No. Only local calendar dates are used for whole-day counts.

Q2: What does include end date do?

It adds one day so both endpoints count in the span.

Q3: Are numbers uploaded?

No. Calculations are processed locally in your browser.

Q4: Can the end be before the start?

Yes. The result may be negative to show direction.

Q5: Does it use time zones?

It uses the dates you pick as local calendar dates.

Related Tools

TimestampTimezone ConverterUnit ConverterWorking Days Calculator