What is scientific notation?

Scientific notation (or standard form) writes a number as a mantissa between 1 and 10 multiplied by a power of ten. For example, 149,600,000 becomes 1.496 × 10^8.

How do I convert scientific notation back to a decimal?

Multiply the mantissa by ten raised to the exponent. For example, 1.496 × 10^8 = 1.496 × 100,000,000 = 149,600,000. Use the reverse mode to do this automatically.

Is my input uploaded?

No. All conversions run locally in your browser using JavaScript arithmetic. Nothing you enter leaves your device.

Scientific Notation Converter

Convert between plain decimal numbers and scientific notation.

Scientific notation converter

Convert numbers between plain decimal form and scientific notation (standard form) in both directions. A number like 149,600,000 becomes 1.496 × 10^8, and back again.

Pick a direction, enter your value, and the answer updates instantly — entirely in your browser, nothing uploaded.