Calculator – Free Smart Calculator with History
Expression calculator with paper tape. Optional notes/labels, tax calculation, hover delete. Export tape as TXT. localStorage.
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Características
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Expression Input
Type expressions like 100 + 50 * 2. Full operator precedence respected.
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Paper Tape History
Every calculation is recorded on a virtual paper tape. See your full calculation history.
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Notes & Labels
Add optional notes or labels to each calculation entry on the tape.
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Tax Calculation
Calculate with or without tax. Common tax rate presets available.
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Hover Delete
Hover over any tape entry to reveal a delete button. Click to remove.
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Export Tape
Export your full paper tape as a TXT file for records.
Cómo usarlo
1
Calculate
Type an expression (e.g., 199 + 15%) and press Enter.
2
View Tape
Each calculation appears on the paper tape with its result.
3
Add Notes
Click on a tape entry to add a note or label.
4
Export
Download the full tape as a TXT file.
Preguntas frecuentes
How does tax calculation work?
Type an amount followed by +TAX% (e.g., 100 + 8%) to get the amount with tax added. Or use -TAX% for tax inclusive calculations.
Can I delete individual tape entries?
Yes. Hover over any tape entry to show the delete button. Click it to remove that entry.
Where is my tape saved?
The paper tape is stored in localStorage and persists across browser sessions.
Is my data sent to a server?
No. All calculations and tape history are stored locally in localStorage. Nothing is sent to any server.
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