Calculate coil voltage, total voltage, or number of windings by entering any 2 values and converting between V, mV, and kV units easily.
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Coil Voltage Formula
The calculator uses the relationship between total voltage, number of coil windings, and voltage per winding. In this calculator, coil voltage means the voltage assigned to each winding.
- CV = coil voltage, or voltage per winding
- TV = total voltage across the coil windings
- N = number of coil windings
The calculator can solve for any one missing value when you enter the other two:
- Calculate coil voltage: divides total voltage by the number of windings.
- Calculate total voltage: multiplies the number of windings by the coil voltage.
- Calculate number of windings: divides total voltage by coil voltage.
Voltage Unit Conversions
The calculator converts voltage entries to volts before applying the formula, then converts the result back to the selected output unit.
| Unit | Symbol | Equivalent in volts |
|---|---|---|
| Millivolt | mV | 1 mV = 0.001 V |
| Volt | V | 1 V = 1 V |
| Kilovolt | kV | 1 kV = 1000 V |
Common Coil Voltage Relationships
| Total voltage | Number of windings | Coil voltage per winding |
|---|---|---|
| 12 V | 6 | 2 V |
| 24 V | 12 | 2 V |
| 120 V | 60 | 2 V |
| 240 V | 120 | 2 V |
Example Problems
Example 1: Calculate coil voltage
You have a total voltage of 120 V and 40 coil windings.
The coil voltage is 3 V per winding.
Example 2: Calculate total voltage
You have 75 windings and a coil voltage of 2.5 V per winding.
The total voltage is 187.5 V.
FAQs
What does coil voltage mean in this calculator?
Coil voltage means the voltage per winding. If the total voltage is spread evenly across the windings, you divide the total voltage by the number of windings to get the voltage for one winding.
Why do I need to enter exactly two values?
The formula has three variables: total voltage, number of windings, and coil voltage. If you enter exactly two, the missing value can be calculated directly. If you enter only one value, there is not enough information. If you enter all three, there is no missing value to solve for.
Can the number of windings be a decimal?
The calculator accepts decimal values, but physical coil windings are usually whole numbers. A decimal winding result can still be useful during design calculations, but the final coil design normally needs to be adjusted to a practical whole number of turns.
