Does it support very large numbers?
Yes—values up to 1e308 are handled using JavaScript’s floating-point range before being normalized.
Step-by-step walkthrough
Scientific Notation Calculator Guide
Use this companion guide beside the interactive calculator to make sure you understand the “why” behind every click. Each section includes the classroom explanation, student-friendly language, and quick practice prompts.
Before you start
Collect the data points listed below and double-check their units. Keeping an organized “givens” list is one of the fastest ways to reduce math errors and impress exam graders.
- scientific notation
- mantissa
- exponent
Detailed procedure
Step 1
Enter a standard number or mantissa/exponent pair.
Step 2
Use the toggle to choose the conversion direction.
Step 3
Copy the normalized mantissa, exponent, and full representation shown below.
Teaching & troubleshooting tips
Can I keep more than three mantissa digits?
Use the precision control to expand or trim mantissa digits as needed for lab reports or homework.