Scientific Notation Converter

Write very large or very small numbers in scientific notation (standard form), or turn them back into ordinary numbers.

Result

Enter values and press Calculate to see the result.

Formula

x=a×10n,1≤∣a∣<10x = a \times 10^{n},\quad 1 \le |a| < 10

a has exactly one non-zero digit before the decimal point; n counts how far the point moved.

How to use this calculator

  1. Choose which way to convert.
  2. Enter the number (or a and n) and press Calculate.

Worked example

Writing 0.000345 in scientific notation

Move the decimal point 4 places right to get 3.45.

So 0.000345 = 3.45 × 10⁻⁴.

Frequently asked questions

When is the power of ten negative?

When the number is smaller than 1: the decimal point moves to the right.

What does 3.45e-4 mean?

It is calculator shorthand for 3.45 × 10⁻⁴.