Convert

Switch between SI prefixes for every common electrical quantity — plus a decibel helper.

Resistance converter

From

Unit	Value
pΩ	1e+12
nΩ	1e+9
µΩ	1e+6
mΩ	1000
Ω	1
kΩ	0.001
MΩ	1e-6
GΩ	1e-9

SI prefixes, and what they multiply by

Every prefix the converter above understands, with the factor it applies to the base unit. Reading across: 1 kΩ is 10³ ohms, 1 µF is 10⁻⁶ farads, and one step between adjacent prefixes is a factor of a thousand — which is why 1 µF is 1,000 nF and 1 nF is 1,000 pF.

pΩ, pF, pH× 10⁻¹²

nΩ, nF, nH× 10⁻⁹

µΩ, µF, µH, µV, µA, µW× 10⁻⁶

mΩ, mF, mH, mV, mA, mW× 10⁻³

Ω, F, H, V, A, Hz, W× 1

hp× 10³

kΩ, kF, kH, kV, kA, kHz, kW× 10³

MΩ, MF, MH, MV, MHz, MW× 10⁶

GΩ, GF, GH, GHz× 10⁹

Quantities you can convert

ResistanceBase unit ohm (Ω) · pΩ, nΩ, µΩ, mΩ, Ω, kΩ, MΩ, GΩ

CapacitanceBase unit farad (F) · pF, nF, µF, mF, F, kF, MF, GF

InductanceBase unit henry (H) · pH, nH, µH, mH, H, kH, MH, GH

VoltageBase unit volt (V) · µV, mV, V, kV, MV

CurrentBase unit ampere (A) · µA, mA, A, kA

FrequencyBase unit hertz (Hz) · Hz, kHz, MHz, GHz

PowerBase unit watt (W) · µW, mW, W, kW, MW, hp, hp

Decibels

The decibel tab is a ratio, not a prefix, so it works differently: power ratios use 10 log₁₀(P₂/P₁) and voltage ratios use 20 log₁₀(V₂/V₁). The factor of two is not a convention — power goes as the square of voltage into the same impedance, so the same ratio expressed in volts needs twice the coefficient to land on the same number of decibels. A doubling of power is about +3 dB; a doubling of voltage is about +6 dB.