Scientific Notation Converter — Number ↔ e / ×10ⁿ
Convert numbers into scientific notation (12345 → 1.2345e+4, 0.000123 → 1.23e-4) in both e-notation and ×10ⁿ styles, and parse scientific notation back into plain numbers — accepts 1.2345E3, 3.14×10², *10, ·10^ forms, superscript digits, live validation, recent 10 records, one-click copy and PNG download.
The scientific notation or the expanded plain number will appear here.
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What is it
Scientific notation writes numbers as a × 10ⁿ where a is a number between 1 and 10. It keeps very large and very small values short and precise.
Notes & fun facts
In physics, engineering and finance, writing 1.23e-4 instead of 0.000123 keeps equations and reports clean, and converting back is instant.
Origin & history
Exponential notation — writing a number as a×10ⁿ — took shape in the works of 17th-century mathematicians such as René Descartes, offering a compact way to express very large and very small values. Rooted in the decimal positional system, it became the standard form used across science, engineering and computing.
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