🔬 Scientific Notation Calculator
Scientific notation squeezes huge or tiny numbers into one digit times a power of ten — 12,345 becomes 1.2345 × 10^4 and 0.00042 becomes 4.2 × 10^-4. Type any number and both the textbook form and the compact e-notation appear.
E-notation (like 1.2345e+4) is the same idea in the one-line format spreadsheets and programming languages expect, so you can copy it straight into Excel or code.
How to use this calculator
Type any number and press Calculate to see it as a times a power of ten, plus the compact e-notation.
- Type the number into the field, large or small.
- Press Calculate.
- Read the scientific notation form, like 1.2345 x 10^4.
- Copy the e-notation form if you need it for a spreadsheet or code.
Frequently asked questions
What does this calculator compute?
It converts any number into scientific notation, one digit times a power of ten, and into e-notation, the one-line format like 1.2345e+4 that spreadsheets and programming languages accept.
Can you show a worked example?
12345 becomes 1.2345 x 10^4, or 1.2345e+4 in e-notation. A tiny 0.00042 becomes 4.2 x 10^-4, or 4.2e-4.
What is e-notation used for?
It is the compact way software writes scientific notation when superscripts are unavailable. Excel, calculators and most programming languages read 1.2345e+4 directly as a number.
How many digits are shown?
Up to seven significant digits, with trailing zeros trimmed, which is plenty for readability while staying faithful to the value you entered.