Engineering Notation Calculator

Q: How is 47500 written?

47.500 × 10³, that is 47.5 kilo-units.

Q: How does it differ from scientific notation?

Scientific notation would give 4.75 × 10⁴. Engineering notation prefers 10³ so the value maps onto the kilo prefix.

Work out engineering notation instantly with clear inputs, formula shown and shareable results.

About Engineering Notation Calculator

Engineering notation restricts the exponent to multiples of three so it lines up with SI prefixes: kilo, mega, giga, milli, micro and so on. The mantissa then lies between 1 and 1000.

Formula

Engineering notation

value = a × 10^(3k) with 1 ≤ |a| < 1000

Worked example

With the default values below, Engineering Notation Calculator returns Engineering notation of 47.500 × 10^3. Change any input above and every figure here is recalculated in your browser.

Inputs used

Value: 47,500
Decimal places in the mantissaaccepts 0–9: 3

Results

Engineering notation: 47.500 × 10^3
Mantissa: 47.500000000
Exponent (multiple of 3): 3
Matching SI prefix: k

Step by step

1Values used
2Engineering notation
3Engineering notation= 47.500 × 10^3
4Mantissa= 47.500000000
5Exponent (multiple of 3)= 3
6Matching SI prefix= k

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 9 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is 47500 written?