# Scientific Notation Converter

> Convert between standard decimal numbers and scientific or engineering notation.

To convert scientific notation, enter a decimal number to express it as a coefficient times a power of ten, or enter a value like 4.2e-4 to expand it. The tool also shows engineering notation, where the exponent is always a multiple of three.

**URL:** https://convertto.tech/t/scientific-notation-converter
**Category:** Number Tools (https://convertto.tech/c/number-tools)
**Privacy:** Runs entirely in the browser; no upload
**Cost:** Free, no sign-up
**Last updated:** 2026-08-01

## Key facts

- **Privacy:** Runs entirely in your browser — nothing is uploaded
- **Cost:** Free, unlimited, no sign-up

## How to use

1. Enter or paste your value.
2. Choose the convert.
3. Set the significant figures.
4. The result appears immediately — copy or download it.

## FAQ

### What is the difference between scientific and engineering notation?

Scientific notation uses exactly one digit before the decimal point, so 47,000 is 4.7 × 10⁴. Engineering notation restricts the exponent to multiples of three so it lines up with SI prefixes, giving 47 × 10³ — which reads directly as 47 kilo-.

### Why does my calculator show E notation?

E is shorthand for "times ten to the power of", used because superscripts are hard to display. 1.5E-7 means 1.5 × 10⁻⁷. It is the same value, written for a device that cannot render exponents.

## Related tools

- [Binary to Decimal Converter](https://convertto.tech/t/binary-to-decimal): Convert binary numbers to decimal, hex and octal instantly.
- [Hex to Decimal Converter](https://convertto.tech/t/hex-to-decimal): Convert hexadecimal values to decimal, binary and octal.
- [Number Base Converter](https://convertto.tech/t/number-base-converter): Convert numbers between any base from 2 to 36 — binary, octal, decimal, hexadecimal and beyond.
- [Octal to Decimal Converter](https://convertto.tech/t/octal-to-decimal): Convert octal numbers to decimal, binary and hexadecimal.
- [Percentage Converter](https://convertto.tech/t/percentage-converter): Convert between percentages, decimals, fractions, ratios and basis points.
- [Roman Numeral Converter](https://convertto.tech/t/roman-numeral-converter): Convert numbers to roman numerals and roman numerals back to numbers, from 1 to 3999.
- [Fraction to Decimal Converter](https://convertto.tech/t/fraction-to-decimal): Convert fractions to decimals and decimals back to simplified fractions.
- [Number to Words Converter](https://convertto.tech/t/number-to-words): Spell out numbers in English words — for cheques, contracts and invoices.