Days Between Dates Calculator Explained for Australians
Counts the days, weeks and weekdays between two dates. This guide walks through what each input means, the formula behind the answer and a worked example using typical Australian figures. You can follow along in the free Days Between Dates Calculator.
Why it matters
Some of the most useful calculations are the small everyday ones: how much a road trip costs in fuel, what an appliance adds to the power bill, or how many working days are left until a deadline.
What you need to enter
The calculator asks for 2 inputs. The table shows each one with the example value used later in this guide.
| Input | Example value |
|---|---|
| Start date | 2026-01-01 |
| End date | 2026-12-25 |
The formula
Days = end date − start date. Weekdays count Monday to Friday, excluding the end date.
Worked example
Entering the example values above gives these results:
| Result | Value |
|---|---|
| Days between | 358 |
| Weeks | 51.1 |
| Weekdays (Mon to Fri) | 256 |
The headline figure is 358 (days between). Change any input in the calculator and every result updates instantly, so you can test different scenarios side by side.
A practical tip
Public holidays differ by state and are not removed from the weekday count.
Keep going
Before relying on the number, read Days Between Dates Mistakes Australians Make and How to Avoid Them. You might also find these guides useful:
- Using a Percentage Calculator in Australia: A Step-by-Step Guide
- Fuel Cost Calculator Explained for Australians
- How the Electricity Cost Calculator Works (With a Worked Example)
Frequently asked questions
- Are the results exact?
- Maths calculations are exact. Cost calculations depend on the prices and usage you enter.
- Do the date calculators handle leap years?
- Yes. They use real calendar dates.
- Can I suggest a calculator?
- Yes. Use the contact page to request one.
Run your own numbers in the Days Between Dates Calculator.
Open the calculatorGeneral information only. Rates and thresholds change, usually on 1 July. Confirm current figures with the ATO or the relevant authority, and get personal advice for decisions about your situation.