# Ohm's Law Calculator

## Online calculator Ohm's Law calculates the current, voltage and resistance, the units of which can include any SI prefixes, the calculator automatically converts one unit to another and gives a detailed solution.

The calculator calculates:

Current I

Voltage U

Resistance R

## Current I

**The current is a scalar physical quantity determined by the electric charge passing through the cross section of the conductor per unit of time. Based on Ohm's law, the current I is directly proportional to the applied voltage U and inversely proportional to the resistance R. The SI unit of electric current is the ampere.**

Voltage U =
volt (V)
decavolt (daV) [10^1]
hectovolt (hV) [10^2]
kilovolt (kV) [10^3]
megavolt (MV) [10^6]
gigavolt (GV) [10^9]
teravolt (TV) [10^12]
petavolt (PV) [10^15]
exavolt (EV) [10^18]
zettavolt (ZV) [10^21]
yottavolt (YV) [10^24]
decivolt (dV) [10^-1]
centivolt (cV) [10^-2]
millivolt (mV) [10^-3]
microvolt (µV) [10^-6]
nanovolt (nV) [10^-9]
picovolt (pV) [10^-12]
femtovolt (fV) [10^-15]
attovolt (aV) [10^-18]
zeptovolt (zV) [10^-21]
yoctovolt (yV) [10^-24]

Resistance R =
ohm (Î©)
decaohm (daÎ©) [10^1]
hectoohm (hÎ©) [10^2]
kiloohm (kÎ©) [10^3]
megaohm (MÎ©) [10^6]
gigaohm (GÎ©) [10^9]
teraohm (TÎ©) [10^12]
petaohm (PÎ©) [10^15]
exaohm (EÎ©) [10^18]
zettaohm (ZÎ©) [10^21]
yottaohm (YÎ©) [10^24]
deciohm (dÎ©) [10^-1]
centiohm (cÎ©) [10^-2]
milliohm (mÎ©) [10^-3]
microohm (µÎ©) [10^-6]
nanoohm (nÎ©) [10^-9]
picoohm (pÎ©) [10^-12]
femtoohm (fÎ©) [10^-15]
attoohm (aÎ©) [10^-18]
zeptoohm (zÎ©) [10^-21]
yoctoohm (yÎ©) [10^-24]

The SI unit of current I
ampere (A)
decaampere (daA) [10^1]
hectoampere (hA) [10^2]
kiloampere (kA) [10^3]
megaampere (MA) [10^6]
gigaampere (GA) [10^9]
teraampere (TA) [10^12]
petaampere (PA) [10^15]
exaampere (EA) [10^18]
zettaampere (ZA) [10^21]
yottaampere (YA) [10^24]
deciampere (dA) [10^-1]
centiampere (cA) [10^-2]
milliampere (mA) [10^-3]
microampere (µA) [10^-6]
nanoampere (nA) [10^-9]
picoampere (pA) [10^-12]
femtoampere (fA) [10^-15]
attoampere (aA) [10^-18]
zeptoampere (zA) [10^-21]
yoctoampere (yA) [10^-24]

Resistance R =

The SI unit of current I

## Voltage U

**Voltage is a scalar physical quantity characterized by work when moving a single positive charge on a given section of the circuit. Voltage is a generalized concept of the potential difference between the beginning and the end of a section of a conductor. The SI unit of electric current is the volt.**

Current I =
ampere (A)
decaampere (daA) [10^1]
hectoampere (hA) [10^2]
kiloampere (kA) [10^3]
megaampere (MA) [10^6]
gigaampere (GA) [10^9]
teraampere (TA) [10^12]
petaampere (PA) [10^15]
exaampere (EA) [10^18]
zettaampere (ZA) [10^21]
yottaampere (YA) [10^24]
deciampere (dA) [10^-1]
centiampere (cA) [10^-2]
milliampere (mA) [10^-3]
microampere (µA) [10^-6]
nanoampere (nA) [10^-9]
picoampere (pA) [10^-12]
femtoampere (fA) [10^-15]
attoampere (aA) [10^-18]
zeptoampere (zA) [10^-21]
yoctoampere (yA) [10^-24]

Resistance R =
ohm (Î©)
decaohm (daÎ©) [10^1]
hectoohm (hÎ©) [10^2]
kiloohm (kÎ©) [10^3]
megaohm (MÎ©) [10^6]
gigaohm (GÎ©) [10^9]
teraohm (TÎ©) [10^12]
petaohm (PÎ©) [10^15]
exaohm (EÎ©) [10^18]
zettaohm (ZÎ©) [10^21]
yottaohm (YÎ©) [10^24]
deciohm (dÎ©) [10^-1]
centiohm (cÎ©) [10^-2]
milliohm (mÎ©) [10^-3]
microohm (µÎ©) [10^-6]
nanoohm (nÎ©) [10^-9]
picoohm (pÎ©) [10^-12]
femtoohm (fÎ©) [10^-15]
attoohm (aÎ©) [10^-18]
zeptoohm (zÎ©) [10^-21]
yoctoohm (yÎ©) [10^-24]

The SI unit of voltage U
volt (V)
decavolt (daV) [10^1]
hectovolt (hV) [10^2]
kilovolt (kV) [10^3]
megavolt (MV) [10^6]
gigavolt (GV) [10^9]
teravolt (TV) [10^12]
petavolt (PV) [10^15]
exavolt (EV) [10^18]
zettavolt (ZV) [10^21]
yottavolt (YV) [10^24]
decivolt (dV) [10^-1]
centivolt (cV) [10^-2]
millivolt (mV) [10^-3]
microvolt (µV) [10^-6]
nanovolt (nV) [10^-9]
picovolt (pV) [10^-12]
femtovolt (fV) [10^-15]
attovolt (aV) [10^-18]
zeptovolt (zV) [10^-21]
yoctovolt (yV) [10^-24]

Resistance R =

The SI unit of voltage U

## Resistance R

**Resistance is a physical quantity that determines the ability of a conductor to prevent the passage of electric current. The SI unit of electric current is the Ohm. The resistance of a conductor depends on the material of which the conductor is made, and also on its shape and size.**

Voltage U =
volt (V)
decavolt (daV) [10^1]
hectovolt (hV) [10^2]
kilovolt (kV) [10^3]
megavolt (MV) [10^6]
gigavolt (GV) [10^9]
teravolt (TV) [10^12]
petavolt (PV) [10^15]
exavolt (EV) [10^18]
zettavolt (ZV) [10^21]
yottavolt (YV) [10^24]
decivolt (dV) [10^-1]
centivolt (cV) [10^-2]
millivolt (mV) [10^-3]
microvolt (µV) [10^-6]
nanovolt (nV) [10^-9]
picovolt (pV) [10^-12]
femtovolt (fV) [10^-15]
attovolt (aV) [10^-18]
zeptovolt (zV) [10^-21]
yoctovolt (yV) [10^-24]

Current I =
ampere (A)
decaampere (daA) [10^1]
hectoampere (hA) [10^2]
kiloampere (kA) [10^3]
megaampere (MA) [10^6]
gigaampere (GA) [10^9]
teraampere (TA) [10^12]
petaampere (PA) [10^15]
exaampere (EA) [10^18]
zettaampere (ZA) [10^21]
yottaampere (YA) [10^24]
deciampere (dA) [10^-1]
centiampere (cA) [10^-2]
milliampere (mA) [10^-3]
microampere (µA) [10^-6]
nanoampere (nA) [10^-9]
picoampere (pA) [10^-12]
femtoampere (fA) [10^-15]
attoampere (aA) [10^-18]
zeptoampere (zA) [10^-21]
yoctoampere (yA) [10^-24]

The SI unit of resistance R
ohm (Î©)
decaohm (daÎ©) [10^1]
hectoohm (hÎ©) [10^2]
kiloohm (kÎ©) [10^3]
megaohm (MÎ©) [10^6]
gigaohm (GÎ©) [10^9]
teraohm (TÎ©) [10^12]
petaohm (PÎ©) [10^15]
exaohm (EÎ©) [10^18]
zettaohm (ZÎ©) [10^21]
yottaohm (YÎ©) [10^24]
deciohm (dÎ©) [10^-1]
centiohm (cÎ©) [10^-2]
milliohm (mÎ©) [10^-3]
microohm (µÎ©) [10^-6]
nanoohm (nÎ©) [10^-9]
picoohm (pÎ©) [10^-12]
femtoohm (fÎ©) [10^-15]
attoohm (aÎ©) [10^-18]
zeptoohm (zÎ©) [10^-21]
yoctoohm (yÎ©) [10^-24]

Current I =

The SI unit of resistance R