🗓️ Days Calculator

About Days Calculator

The Days Calculator is primarily used to get the days between two dates but you can also add and subtract days from a date. For example, you want to know how many days are there in between January 1, 2022 and February 1, 2024? Just enter them on the calculator. You can also add 2 days or subtract 21 days using this calculator.

💡 This tool calculates dates by counting calendar days between your dates. You can also add or subtract a number of days which is perfect for project planning, travel countdowns, or deadline tracking.

How to Use the Days Calculator

To use the Days Calculator, you just need to pick first the operation you want to use - add days, subtract days or get the days between two dates. You just need to enter the values on corresponding inputs and click on Calculate button. Here's a more detailed step by step guide.

In case you are doing some addition or subtraction of days from the starting date, first select the add or subtract as the type of operation. Then, enter the starting date and the number of days want to add or subtract on their corresponding fields.

Although we have a much specific calculator for days from now (➕ add days) and days ago (➖ subtract days), this calculator has more option to change the starting date and combined with days between two dates operation.

Add Days

In doing Add Days operation, there are two required input fields to be filled. The first one is the Start Date which marks the start of count off, and by default, the value is set to the current date today.

Then there's the Number of Days input field where you need to type in the number of days you want to add.

Here's a quick table of dates if we are to add 10 days from today November 11, 2025.

Subtract Days

It has the same process in doing the Add Days operation but this time, we are tracing back the date instead of moving forward.

Just a quick tip, even if you are doing Add Days but you insert a negative value, let's say -10, the tool will automatically read it as if you want to subtract days.

Here's a quick table of dates if we are to subtract 10 days from today November 11, 2025.

Days Between

The Days Between operation, or you can call it date duration, generates a total number of days between the Start Date and the End Date.

By default, the Start Date is always set to the current date today. There's also a predefined value for the End Date on the initial load of the tool. This is to make sure that you'll have working example before you enter your own values.

Let's say you want to figure out the total number of days in between today November 11, 2025 and on December 9, 2025.

The output would be 28 days.

🔔 Last updated on October 30, 2025