🔍

Notepad Calculator

Write notes with formulas, calculate expressions line by line, and get a running total.

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

Result

The notepad calculator combines a scratchpad with formula evaluation for small planning and accounting tasks.

Write regular text and expressions together; lines that contain calculations receive an inline result while other notes stay untouched.

It is useful for budgets, estimates, shopping lists, invoice drafts, sprint notes, and quick totals during planning.

The annotated result can be copied or downloaded as a text file, keeping the workflow lightweight and local.

🛡️
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

  • • Keep a budget, estimate, or expense list as a plain note with formulas.
  • • Calculate expression lines and get a total at the bottom.
  • • Download or copy the annotated note with results inserted.