Step by step
- Calculate as usual and press = or Enter.
- Scroll the History list to review earlier sums.
- Tap a line to reuse its result.
At a glance
| Action | Button | Result |
|---|---|---|
| Review past sums | History list | Last 30 calculations |
| Reuse a result | Tap a history line | Result goes to the display |
| Start fresh | Clear history | List is emptied |
Related questions
Is my history private?
Yes, it stays in your browser and is never sent anywhere.
Can I see history on another device?
No, each browser keeps its own list.
Can I print the tape?
Use the browser's Print, or copy results one by one.
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Updated November 14, 2026.