Scientific Notation Calculator

Add, subtract, multiply, and divide numbers in scientific notation, and get results in scientific, E, and decimal notation in one click.

INPUT
×10
×10
RESULTS

How to Use This Calculator

  • Enter the coefficient and exponent for your first number (e.g., 3.2 × 10⁴)
  • Select your operation: add, subtract, multiply, or divide
  • Enter the coefficient and exponent for your second number
  • Hit Calculate and get your result instantly in all three notation formats
  • Use Reset to clear the fields and start a new calculation

Scientific Notation Operations

Each operation in scientific notation follows its own rule. Here’s the short version of each, with a quick example.

Addition

To add numbers in scientific notation, first convert both numbers to the same power of ten, then add the coefficients. Example: (3.2 × 10⁴) + (5.1 × 10⁴) = 8.3 × 10⁴

Subtraction

To subtract numbers in scientific notation, match the exponents first, then subtract the coefficients. Example: (7.5 × 10⁶) − (2.1 × 10⁶) = 5.4 × 10⁶

Multiplication

To multiply numbers in scientific notation, multiply the coefficients and add the exponents. Example: (3.0 × 10⁸) × (2.5 × 10³) = 7.5 × 10¹¹

Division

To divide numbers in scientific notation, divide the coefficients and subtract the exponents. Example: (8.0 × 10⁹) ÷ (2.0 × 10³) = 4.0 × 10⁶

Worked Example

Let’s say you want to multiply 3.0 × 10⁸ (the speed of light in m/s) by 2.5 × 10³.

  • Enter 3.0 and 8 for the first number
  • Select ×
  • Enter 2.5 and 3 for the second number
  • Hit Calculate

Result: Scientific Notation: 7.5 × 10¹¹ E Notation: 7.5E+11 Decimal Notation: 750,000,000,000

Who Is This Calculator For?

This tool is built for anyone working with very large or very small numbers:

  • Students solving physics, chemistry, or astronomy problems
  • Engineers working with measurements across scales
  • Scientists handling data in research and lab reports
  • Teachers demonstrating notation conversions in class

Whether you’re checking homework or verifying a calculation on the job, this calculator gives you accurate results across all three notation formats, fast.

Guide