Scientific Notation Calculator
Convert a number to/from scientific notation with a chosen significant count.
Input Data
Number→sci or sci→number.
Value
Mantissa
Exp
Sig
Results
Converted value.
1.235 × 10^8
Explanatory note about the result.
123456789 = 1.235 × 10^8（4 位有效）
At a glance:value = m×10^e with 1≤|m|<10; e = floor(log10(|value|)). Complements significant-figures and logarithm.
Formula
value = m × 10^e.
How to Use
- Enter a value and sig digits, or m and e.
- The tool returns the notation.
Case Studies
300000000
3×10^8.
FAQ
Why scientific notation?
Compact for very large/small numbers, e.g. 3×10^8 m/s.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.