About this tool
Convert numbers between decimal and scientific/E notation right in your browser, with a readable a×10^b form. Nothing is uploaded.
Frequently asked questions
What format does the scientific field accept?
JavaScript E notation such as 1.234e5 or 6.02e23, including negative exponents like 9.1e-31.
Why does my number lose precision?
It uses standard double-precision floating point, so very long integers may round slightly, just like in any JavaScript engine.