Calculadora de Notação Científica

The Scientific Notation Calculator converts any real number to the format a × 10^n, where 1 ≤ |a| < 10 and n is an integer. The process automatically determines the exponent needed to move the decimal point until the absolute value of the coefficient lies between 1 and 9.999..., adjusting the sign of n according to the direction of the shift. For example, 0.00045 becomes 4.5 × 10^-4, while 3,200 becomes 3.2 × 10^3.

This tool is useful for students in exact sciences, engineering, and fields dealing with very large or very small numbers, such as astronomical distances (e.g., 9.46 × 10^15 meters in a light-year) or atomic dimensions (e.g., 1 × 10^-10 meters for the radius of an atom). It also helps standardize results in reports and academic papers, avoiding decimal place errors.

To use the calculator, enter the number without spaces, using a period as the decimal separator. The tool accepts positive and negative numbers, as well as zero (which results in 0 × 10^0). It is important to verify the entered value, as the accuracy of the result depends solely on the input provided. For numbers with many digits, the calculator rounds the coefficient to up to 15 significant decimal places.

Cautions: numbers very close to zero may generate large negative exponents, and the calculator does not convert scientific notation back to decimal. Also, remember that scientific notation follows the international standard ISO 80000-2, widely accepted in scientific and technical contexts.