Free Scientific Notation Calculator Online
This free online scientific notation calculator converts between standard, scientific, and engineering notation and performs arithmetic operations.
Enter a Number
Enter standard notation, E-notation (2.5e8), or any numeric format.
Scientific Notation
Enter a number above
How the Scientific Notation Calculator Works
Enter any number and the scientific notation calculator converts it to scientific notation (a × 10^n), engineering notation (exponent is a multiple of 3), and E-notation (used in programming). The scientific notation calculator handles very large and very small numbers alike.
For 0.000045: the scientific notation calculator gives 4.5 × 10^−5. For 6,022,000,000,000,000,000,000,000: it gives 6.022 × 10^23 (Avogadro's number). The scientific notation calculator preserves precision.
The scientific notation calculator also performs arithmetic. Enter two numbers and an operation to get results in all notation formats. This is especially useful when multiplying or dividing numbers with very different magnitudes.
When to Use Scientific Notation
Physics, chemistry, and astronomy deal with extremely large or small numbers. The speed of light is 3 × 10^8 m/s. An electron mass is 9.109 × 10^−31 kg. The scientific notation calculator makes these numbers manageable.
Engineering uses scientific notation for circuit parameters (picofarads = 10^−12, megaohms = 10^6). The scientific notation calculator is a daily tool for engineers working with wide-ranging values.
In computing, floating-point numbers use scientific notation internally. The E-notation output from the scientific notation calculator (e.g., 4.5E-5) is the format used in most programming languages.
Tips for Using the Scientific Notation Calculator
Any Format Accepted
Enter standard numbers, E-notation (2.5e8), or scientific notation. The scientific notation calculator parses all formats.
Engineering vs Scientific
Engineering notation uses exponents divisible by 3, matching SI prefixes (kilo, mega, giga). The scientific notation calculator shows both.
Arithmetic Mode
Enter a second number and select an operation. The scientific notation calculator gives the result in all formats.
Copy Results
The scientific notation calculator displays E-notation you can paste directly into code or spreadsheets.
Frequently Asked Questions
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