194 tools

Days Calculator

Days, weeks and business days between two dates.

Calculators

About the Days Calculator

The Days Calculator is a free online calculator from Toolbench. Days, weeks and business days between two dates. Enter your numbers and the answer — with the formula used — updates as you type.

Category
Calculators
Price
Free
Account
Not required
Runs
Entirely in your browser

How to use the Days Calculator

  1. Enter the values (start date, end date, include end date).
  2. Read the result — it updates as you type.
  3. Check the breakdown rows to see exactly how it was calculated.

Worked example

Days30
Weeks4 weeks, 2 days
Business days (Mon–Fri)21
Weekend days9
Months (approx.)0.99
Hours720

Formula: Days between dates are counted as calendar days (optionally including the end date); business days exclude Saturdays and Sundays but not public holidays.

Inputs

Start dateDate (defaults to today)
End dateDate (defaults to today)
Include end dateOn / off

Privacy

Everything runs in your browser: what you type or paste is processed by JavaScript on your device, not on a server. If you are signed out, nothing is saved at all. If you sign in with Google, your inputs and settings are saved privately to your account so they sync across devices.

Frequently asked questions

Is the Days Calculator free?

Yes. Days Calculator is completely free with no sign-up, no usage limits and no watermarks.

Is my data private?

Yes. The Days Calculator processes everything in your browser. Signed out, nothing is saved; signed in, your inputs sync privately to your own account.

How does the days calculation work?

Days between dates are counted as calendar days (optionally including the end date); business days exclude Saturdays and Sundays but not public holidays.

Does it work on my phone?

Yes. Toolbench runs in any modern browser on desktop, tablet or phone — there is nothing to install.

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