Notepad Calculator

A notepad that does the math. Type in plain language and every line is answered as you go — plain arithmetic, named variables you can reuse, unit conversions, percentages, and time zones — with running subtotals grouped by kind. It all runs in your browser, and nothing you type is ever sent anywhere.

• 3 * 14.50 + 2
• budget = 2000
• 40% of budget
• 12 miles in km
• 9am pst to est
• total

Private by design. Your notepads are saved only in this browser. They're never uploaded, logged, or shared — the same promise as the image tools and generators.