Scientific Notation Converter
Convert between standard form and decimal notation.
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ⓘ Live results
Results
- Scientific notation
- 4.5821 × 10^-4
- Engineering notation
- 458.21 × 10^-6
- E-notation
- 4.582100e-4
- Decimal form
- 0.00045821
Quick answer
Scientific notation writes a number as a coefficient between 1 and 10 multiplied by a power of ten.
n = a × 10^b, 1 ≤ |a| < 10
How to use the Scientific Notation Converter
- 1Type any number, however large or small.
- 2Read the scientific and engineering forms.
- 3Copy the notation you need.
Worked example
Using the values the calculator loads with:
Inputs
- Number0.00045821
Results
- Scientific notation4.5821 × 10^-4
- Engineering notation458.21 × 10^-6
- E-notation4.582100e-4
- Decimal form0.00045821
Frequently asked questions
What is engineering notation?
Scientific notation restricted to exponents that are multiples of three, so they line up with SI prefixes like kilo, milli and micro.
How many significant figures should I keep?
Match the least precise measurement in your calculation — extra digits imply precision you do not have.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.