Practical tools for measured work
Image arithmetic calculator
Read a printed expression locally, review the recognized text and explicitly confirm arithmetic calculation.
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Read one printed arithmetic expression from an image, correct the recognized text, then calculate. Your image stays in this browser. Recognition assets load from this site only when you start reading.
Use decimal points, +, −, ×, ÷ and parentheses. Replace handwritten or unclear symbols yourself. Equations, units, percentages, powers and stacked fractions are not supported; enter a fraction with /.
Image reading limits
Crop closely around one clear, upright printed expression. OCR can confuse digits and signs, omit characters or join lines. It does not understand a geometry diagram or reliably read handwriting. The result remains hidden until you explicitly confirm the text.
Example: 12 + 3 × 4 = 24. Parentheses change the order: (12 + 3) × 4 = 60. Enter only the expression on the left of the equals sign. Results use floating-point arithmetic and twelve significant digits.
No image, recognized text or calculation is uploaded or saved by this tool. Leaving the page clears its state. Cancel stops the worker; manual text entry remains available if recognition fails.
OCR engine: Tesseract.jsRelated tools
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