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Notepad Calculator

Write notes along with mathematical expressions - the tool will calculate everything line by line.

Processing... 0%
Reading note lines
Detecting expressions
Calculating totals
Formatting annotated note

Result

Are you familiar with the situation when you are planning a budget or calculating the cost of a project, making notes like 'hosting = 10 * 12', and you have to keep switching to the calculator to calculate the sum of each item?

This unique calculator notebook combines a text editor and a calculation tool. All calculations happen locally in your browser, keeping your financial plans private.

You just write plain text with math formulas and the tool automatically calculates the result for each row and displays the total at the bottom. The tool supports variables, comments and complex formulas.

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Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Line-by-line expression detection.
  • Total sum for calculated rows.
  • Copy or download the annotated note.

Key Benefits

✓ Uses the same parser as the calculator for consistent results.
✓ Keeps text notes and calculations local.
✓ Adds a total while preserving the original note lines.

Use Cases

  • • Do you need to make a detailed estimate or calculate your monthly expenses?
  • • Do you want to plan a family budget with text notes for each amount?
  • • Do you need to quickly make a chain of dependent calculations when planning a project?