📏 Engineering Notation Calculator
Convert any value into engineering notation — powers of ten in multiples of three, each with its SI prefix (p, n, µ, m, k, M, G, T). Built for electronics work: pick a prefix from the dropdown and the value converts instantly.
Convert to Engineering Notation
Type a value, choose its SI prefix from the dropdown, and optionally pick an electrical quantity for unit-aware output. Plain decimals (0.000047) and exponent form (47e-6 or 4.7e-5) both work.
The electronics band (highlighted) covers pico through Tera — the range you will use for virtually every component value, from a few picofarads of stray capacitance to gigahertz clock frequencies.
Always a multiple of three
Engineering notation is scientific notation where the exponent of ten is always a multiple of three — …, 10⁻₆, 10⁻³, 10⁰, 10³, 10₆, … Each one lines up with an SI prefix, so 4700 Ω becomes 4.7 kΩ and 0.000047 F becomes 47 µF.
Why technicians prefer it
It maps directly onto component markings and meter readouts. A multimeter shows 4.7 kΩ, not 4.7 × 10³ Ω. Keeping exponents in steps of three means the digits before the prefix are always between 1 and 999 — easy to read aloud and hard to misplace a decimal.
Scientific vs engineering
Scientific: one digit before the decimal, any exponent — 4.7 × 10³. Engineering: exponent locked to multiples of three — 4.7 × 10³ here too, but 47000 becomes 47 × 10³, not 4.7 × 10⁴.
Reading the result
This tool shows your number four ways: the engineering form with prefix, the scientific form, the plain decimal, and the SI base value. Use whichever your datasheet, schematic, or instrument expects.