Scientific Notation Calculator
Convert numbers between standard decimal form and scientific notation, with engineering notation as a bonus.
Runs 100% in your browser — nothing is uploaded.
Result
Formula
a × 10ⁿ where 1 ≤ |a| < 10
About this calculator
Convert numbers between standard decimal notation and scientific notation, and perform arithmetic operations (addition, subtraction, multiplication, division) on numbers expressed in scientific notation.
How to use
- 1
Choose the conversion direction: 'Decimal → scientific' or 'Scientific → decimal'.
- 2
Enter your number in the 'Number' field (for decimal to scientific) or the 'Mantissa' and 'Exponent (×10ⁿ)' fields (for scientific to decimal).
- 3
Click calculate to see the result in scientific or decimal notation.
Frequently asked questions
How do I enter a number in scientific notation?
Use the 'e' notation, for example, 1.23e4 for 1.23 × 10^4. You can also enter decimal numbers directly.
What is engineering notation?
Engineering notation is similar to scientific notation but the exponent is always a multiple of 3, making it easy to use with metric prefixes (e.g., kilo, milli).
Please note: Results are estimates for general information only and are not professional or medical/financial advice.