Scientific notation expresses numbers as a coefficient between 1 and 10 multiplied by a power of 10. It makes very large numbers (6.022 × 10²³) and very small numbers (1.6 × 10⁻¹⁹) manageable. This converter handles bidirectional conversion with engineering notation and programming E-notation variants.
How to Use
Enter any number:
- Standard → Scientific: Type 0.00045 → 4.5 × 10⁻⁴
- Scientific → Standard: Type 4.5e-4 → 0.00045
- Engineering: Shows exponents in multiples of 3 (kilo, mega, etc.)
Scientific Notation Format
The standard form is a × 10ⁿ where 1 ≤ |a| < 10. In programming, this is written as aEn (e.g., 4.5E-4). Engineering notation restricts n to multiples of 3, aligning with SI prefixes.
SI Prefix Reference
- 10³ = kilo (k), 10⁶ = mega (M), 10⁹ = giga (G), 10¹² = tera (T)
- 10⁻³ = milli (m), 10⁻⁶ = micro (μ), 10⁻⁹ = nano (n), 10⁻¹² = pico (p)
Step-by-Step Instructions
- 1Enter a number in standard form or E-notation.
- 2View the scientific notation representation.
- 3Check engineering notation with SI prefix.
- 4Note the significant figures count.
- 5Copy any format with one click.