Scientific Notation Converter — Scientific ↔ Standard & Engineering
Input & Formatting
Tips: commas are ignored; use e (e.g., 1.2e5) or ×10^.
Results
Standard (decimal):
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Scientific (a × 10^n):
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Engineering (a × 10^n):
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Coefficient (a):
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Exponent (n):
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Significant figures:
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Tip: Use E-notation like 3.1e-5 for quick entry.
How Scientific & Engineering Notation Work
Scientific notation writes numbers as \(a \times 10^n\) where \(1 \le a < 10\) and \(n\) is an integer. Example: \(5{,}200 = 5.2 \times 10^3\).
Engineering notation is similar, but n must be a multiple of 3 so it lines up with SI prefixes (k, M, G, m, µ, n…). Example: \(0.0047 = 4.7 \times 10^{-3}\) (milli).
- Significant figures indicate precision: entering 1.2300 implies 5 sig figs.
- E-notation is the computer-friendly form: 3.1e-5 = \(3.1 \times 10^{-5}\).
- The converter preserves or applies sig figs according to your selection.
Frequently Asked Questions
How does “auto” sig figs work?
We infer significant figures from your typed number (e.g., trailing zeros after a decimal point count as significant).
What formats can I paste?
Examples: 123000, 0.000031, 6.022×10^23, 4.57 x 10^-3, 4.57e-3.
Is everything private?
Yes — all conversions run in your browser.