Engineering Notation Calculator

Convert a number to engineering notation (powers of 1000).

Mantissa 47

Exponent (multiple of 3) 3

Engineering notation 47 × 10^3

Formula: n = mantissa × 10^(3k)

Step-by-step with your numbers:

1. Values used:

2. Number = 47,000

4. Mantissa = 47

5. Exponent (multiple of 3) = 3

6. Engineering notation = 47 × 10^3

Did we solve your problem today?

Engineering notation is like scientific notation but uses exponents that are multiples of three, matching SI prefixes.

The math behind it

The exponent is rounded down to the nearest multiple of 3, so the mantissa lands between 1 and 1000 — aligning with kilo, mega, milli, etc.

47000 = 47 × 10³.

How does it differ from scientific notation?

Scientific keeps the mantissa between 1 and 10; engineering keeps the exponent a multiple of 3.