Volts ↔ Watts Converter
Electrical
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Inputs
Formula
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What this converter does
This converter turns watts into volts and back. Since power is voltage times current, divide watts by the current in amps to get volts — 60 W at 5 A is 12 V. Type a value and read the result as you type.
This is the DC (or resistive) relationship. For AC loads with a power factor, use the Watts to Amps converter instead.
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The units it covers
Voltage and power are linked by current — in a DC circuit, power is voltage times current.
View all units & their values
| Unit | Symbol | Value | Mainly used |
|---|---|---|---|
| Volt | V | voltage | Supply voltage |
| Watt | W | power | Power drawn |
| Current | A | input | Current in amps |
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The formula
For a DC (or resistive) circuit, power equals voltage times current:
Conversion
W = V × AWhere:
- V = voltage in volts
- W = power in watts
- A = current in amps
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Worked example
What voltage is 60 W at 5 A?
Step 1 · The formula
V = W ÷ AStep 2 · Substitute
60 ÷ 5 = 12 VSo 60 W drawing 5 A runs at 12 volts.
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The units in this example
Wattsymbol: W
The power a device draws — voltage times current in a DC circuit.
Common voltage/power values
- V = W ÷ A
- 60 W @ 5 A = 12 V
- 120 W @ 1 A = 120 V
- 1,000 W = 1 kW
Voltsymbol: V
The electrical potential of a supply — power divided by current in a DC circuit.
Common voltage/power values
- W = V × A
- 12 V @ 2 A = 24 W
- V = W ÷ A
- 240 V @ 0.5 A = 120 W
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FAQ
QHow do I convert watts to volts?
Divide the power in watts by the current in amps. 60 W at 5 A is 12 V.
QCan I get volts from watts alone?
No — you also need the current. Voltage = watts ÷ amps.
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