Scientific Notation Converter

New

Convert numbers to and from scientific notation instantly.

Standard number

Quick examples:

Scientific notation

2.99792458 × 10^8

E notation (calculator)

2.99792458E8

Engineering notation

299.792458 × 10^6

2.99792458

Coefficient

Exponent (power of 10)

Step-by-step

1Step 1: Move the decimal point left 8 places to get 2.99792458

2Step 2: The exponent is 8 (number of places moved)

3Step 3: Scientific notation = 2.99792458 × 10^8

Common scientific constants

Speed of light3 × 10⁸ m/s

Avogadro's number6.022 × 10²³ mol⁻¹

Electron mass9.11 × 10⁻³¹ kg

Planck constant6.626 × 10⁻³⁴ J·s

Distance to Sun1.496 × 10¹¹ m

What is Scientific Notation Converter?

A Scientific Notation Converter transforms numbers between standard decimal form and scientific notation - a way of expressing very large or very small numbers as a coefficient multiplied by a power of 10. For example, 0.000045 = 4.5 × 10⁻⁵ and 6,500,000 = 6.5 × 10⁶. Scientific notation is essential in physics, chemistry, astronomy, biology, and engineering where numbers span many orders of magnitude.

Why use Nuo Tools's Scientific Notation Converter?

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Bidirectional

Convert from standard to scientific notation and back.

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Step-by-step

Shows exactly how the conversion was performed.

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Multiple formats

Output in ×10ⁿ notation, E notation (6.5E6), and engineering notation.

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Handles extremes

Works with very large and very small numbers accurately.

How to use Scientific Notation Converter

Enter a number in standard decimal form to convert it to scientific notation.

Or enter a number in scientific notation (e.g. 6.5e6) to convert back to standard form.

The conversion appears instantly with step-by-step explanation.

Copy the result in your preferred notation format.

Frequently asked questions

What is scientific notation?+

Scientific notation expresses a number as a × 10ⁿ where 1 ≤ |a| < 10 and n is an integer. For example, 45,000 = 4.5 × 10⁴ and 0.0023 = 2.3 × 10⁻³. It makes very large or very small numbers easier to read, write, and compare.

What is E notation?+

E notation (also called scientific E notation) is the computer representation of scientific notation. Instead of × 10ⁿ, it uses the letter E: 4.5E4 means 4.5 × 10⁴ = 45,000. It is used by calculators, spreadsheets, and programming languages.

What is engineering notation?+

Engineering notation is similar to scientific notation but restricts the exponent to multiples of 3 (corresponding to SI prefixes: kilo, mega, giga, milli, micro, nano). For example, 45,000 = 45 × 10³ (instead of 4.5 × 10⁴). This makes it easier to relate numbers to engineering units.