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Scientific Notation Converter - Free Convert E Notation Online

Free online scientific notation converter. Convert between scientific notation and standard form. Supports E notation, engineering notation, and large numbers. No signup required.

Supports: 1.23e8, 1.23x10^8, 1.23*10^8

NameScientific NotationE NotationUnit
Speed of light2.99792458 x 10^82.99792458e+8m/s
Avogadro number6.022 x 10^236.022e+23mol^-1
Planck constant6.626 x 10^-346.626e-34J*s
Earth mass5.972 x 10^245.972e+24kg
Electron mass9.109 x 10^-319.109e-31kg
Boltzmann constant1.381 x 10^-231.381e-23J/K
One million1 x 10^61e+6
One billion1 x 10^91e+9
One trillion1 x 10^121e+12
Nanosecond1 x 10^-91e-9s
Micrometer1 x 10^-61e-6m

Click any row to load the value.

Scientific Notation Converter Online

This scientific notation converter tool lets you convert between scientific notation and standard numbers instantly. Enter any number to see its scientific notation, E notation, and engineering notation. Or enter a scientific notation value to convert it to standard form. Supports very large and very small numbers. Useful for science, engineering, and mathematics. All processing happens in your browser โ€” your data never leaves your device.

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FAQ

What is scientific notation?
Scientific notation expresses numbers as a coefficient (1-9.99) multiplied by a power of 10. Examples: 1,500,000 = 1.5 x 10^6, 0.00042 = 4.2 x 10^-4. It makes very large and very small numbers manageable.
How do I convert to scientific notation?
Move the decimal point until you have a number between 1 and 10. Count the positions moved: right = negative exponent, left = positive. Example: 123,456 โ†’ 1.23456, moved 5 left โ†’ 1.23456 x 10^5.
Where is scientific notation used in programming?
JavaScript: 1.5e6 = 1,500,000. Python: 4.2e-4 = 0.00042. Used in floating-point numbers, physical constants, large data sizes, and any context where numbers span many orders of magnitude.