# Scientific Notation Converter Convert numbers between standard decimal format and scientific notation, with optional engineering notation output > Canonical page: https://elysiatools.com/en/tools/scientific-notation-converter - **Category:** Math & Numbers - **Keywords:** scientific notation, converter, decimal, engineering notation, e notation ## Overview The Scientific Notation Converter is a precise utility for translating numbers between standard decimal format and scientific notation. It supports both standard scientific formatting and E-notation, while also offering an optional engineering notation output. With customizable significant figures, it ensures accurate numerical formatting for math, physics, programming, and engineering workflows. ## Inputs - **Number Input** (text): e.g. 0.00045 or 4.5e-4 - **Conversion Type** (select) - **Significant Figures** (number) - **Show Engineering Notation** (checkbox) ## When to use - When you need to convert extremely large or microscopic decimal numbers into readable scientific notation. - When translating E-notation values from programming outputs back into standard decimal formats. - When formatting numerical data for engineering reports that require exponents in multiples of three. ## How it works - Enter your number in either standard decimal format (like 0.00045) or E-notation (like 4.5e-4). - Select your desired conversion direction: decimal to scientific or scientific to decimal. - Adjust the significant figures (from 1 to 15) and toggle engineering notation if needed. - View the instantly converted results in scientific, E-notation, and engineering formats. ## Use cases - Formatting physics and chemistry lab results into standard scientific notation. - Converting floating-point outputs from software logs into readable decimal numbers. - Standardizing electrical engineering values into engineering notation for technical documentation. ## Frequently asked questions ### What is the difference between scientific and engineering notation? Scientific notation uses a single non-zero digit before the decimal point (e.g., 4.5 × 10^-4). Engineering notation restricts the exponent to multiples of three (e.g., 450 × 10^-6), which aligns with metric prefixes like kilo, micro, or milli. ### Can I convert E-notation like 1.2e5 to a standard decimal? Yes, select the 'Scientific Notation to Decimal' conversion type and input your E-notation value to get the standard decimal equivalent. ### How many significant figures can I specify? You can set the significant figures anywhere from 1 to 15 digits to ensure precise rounding for your specific use case. ### Does this tool support negative numbers and negative exponents? Yes, the converter fully supports negative base numbers and negative exponents for both inputs and outputs. ### What formats are provided in the output? The tool outputs a structured JSON response containing standard scientific notation, E-notation, and optionally engineering notation. ## Related tools - [Convert AVIF to TIFF](https://elysiatools.com/en/tools/avif-to-tiff): Convert AVIF images to TIFF format with lossless quality, compression options, and professional workflows - [Batch Image Convert](https://elysiatools.com/en/tools/batch-convert): Convert multiple images to different formats with quality settings and batch processing - [Convert GIF to AVIF](https://elysiatools.com/en/tools/gif-to-avif): Convert GIF images to AVIF format with next-generation compression and quality settings - [Convert GIF to JPEG](https://elysiatools.com/en/tools/gif-to-jpg): Convert GIF images to JPEG format with quality settings and background color options - [Convert GIF to MP4](https://elysiatools.com/en/tools/gif-to-mp4): Convert GIF images to MP4 video format with customizable quality and resolution settings - [Convert GIF to PDF](https://elysiatools.com/en/tools/gif-to-pdf): Convert GIF images to PDF format with support for both single-frame and multi-frame animations - [Convert GIF to PNG](https://elysiatools.com/en/tools/gif-to-png): Convert GIF images to PNG format with support for both single-frame and multi-frame animations - [Convert GIF to WebM](https://elysiatools.com/en/tools/gif-to-webm): Convert GIF images to WebM video format with modern compression and web optimization ## Samples - [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion - [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion - [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion ## Related content - [Chemistry Lab Calculations and Reference](https://elysiatools.com/en/hubs/chemistry-lab-calculations-and-reference): Prepare a traceable stoichiometry or solution plan by checking references, balancing equations, calculating molar quantities, normalizing units, and controlling significant figures. - [Math and Number Conversion Workflow](https://elysiatools.com/en/hubs/math-&-numbers-convert): Convert measurements, number bases, fractions, scientific notation, Roman numerals, and byte or bit values with a clear precision check.