Convert between standard, scientific, engineering, and expanded notation. Understand very large and very small numbers instantly.
Famous Numbers in Scientific Notation
📐 Scientific notation: Written as a × 10ⁿ where 1 ≤ |a| < 10. Example: 45,000 = 4.5 × 10⁴. The exponent (n) is the number of places the decimal point moves.
⚡ Engineering notation: Like scientific notation, but the exponent is always a multiple of 3 (matching SI prefixes: kilo=10³, mega=10⁶, milli=10⁻³, micro=10⁻⁶). Makes it easier to read off real-world units.
🔢 Prefix reference: tera (10¹²) · giga (10⁹) · mega (10⁶) · kilo (10³) · milli (10⁻³) · micro (10⁻⁶) · nano (10⁻⁹) · pico (10⁻¹²)