🔬 Scientific Notation Converter

Enter a standard number, E-notation (1.5E-7) or scientific notation (1.5 × 10^-7).
Optional – round the mantissa

Scientific notation

2.99792458 × 10⁸

Scientific notation2.99792458 × 10⁸
E-notation2.99792458E+8
Engineering notation299.792458 × 10⁶
Standard form299,792,458
Mantissa (coefficient)2.99792458
Exponent (power of 10)8
SI prefix (engineering)M (mega)
Significant figures9

Step by step

  1. Significant digits: 299792458
  2. Move the decimal point 8 places to the left so one non-zero digit is in front of it
  3. Mantissa: 2.99792458, which is between 1 and 10
  4. Exponent: 8 → 2.99792458 × 10⁸
  5. Engineering notation rounds the exponent down to a multiple of 3: 6 → 299.792458 × 10⁶

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