🔬 Exponential Notation & SI Metric Converter
Scientific Notation Converter
Convert decimal numbers to scientific notation ($a \times 10^b$), engineering notation, E-notation, and SI metric prefixes.
Scientific Constants:
Speed of Light (c)
Avogadro's Constant (N_A)
Electron Mass (m_e)
1.5 Micro (0.0000015)
Standard Scientific Notation
3.45 × 10⁸
Engineering Notation
345 × 10⁶
Exponent multiple of 3
E-Notation (Computer)
3.45e+8
Programming format
SI Metric Prefix
345 Mega (M)
Engineering unit
Standard Decimal
345,000,000
Expanded notation
Scientific vs Engineering Notation
Scientific Notation writes any real number as $a \times 10^b$, where $1 \le |a| < 10$ and $b$ is an integer.
- Engineering Notation: Requires the exponent $b$ to be a multiple of 3 ($\dots, 10^{-6}, 10^{-3}, 10^0, 10^3, 10^6, 10^9, \dots$), allowing direct substitution with SI metric prefixes:
- $10^{12} = \text{Tera (T)}$ | $10^9 = \text{Giga (G)}$ | $10^6 = \text{Mega (M)}$ | $10^3 = \text{kilo (k)}$
- $10^{-3} = \text{milli (m)}$ | $10^{-6} = \text{micro (µ)}$ | $10^{-9} = \text{nano (n)}$ | $10^{-12} = \text{pico (p)}$