Formula
Kilovolts = Millivolts × 0.000001Direct answer
Multiply the entered millivolts value by 0.000001 to express it in kilovolts (kV). This converts millivolt (mV) to kilovolt (kV) within the documented voltage family.
Variables and formula
- Millivolts (mV): the source value measured in millivolt.
- Kilovolts (kV): the same quantity expressed in kilovolt.
- Conversion factor: 0.000001 kilovolts per millivolt.
Kilovolts = Millivolts × 0.000001
The generator emits numeric factors with at most 15 significant digits. Calculator results keep up to 10 significant digits for display; this formatting does not increase the precision of the measurement.
Unit definitions and named variants
Source unit: millivolt (mV). A millivolt is the SI decimal submultiple formed by applying milli (10^-3) to volt: 1 mV = 0.001 V. The canonical millivolt definition is used; no alternate named variant is implied. Reference: Bureau International des Poids et Mesures: The International System of Units (SI), 9th edition, version 4.01.
Target unit: kilovolt (kV). A kilovolt is the SI decimal multiple formed by applying kilo (10^3) to volt: 1 kV = 1000 V. The canonical kilovolt definition is used; no alternate named variant is implied. Reference: Bureau International des Poids et Mesures: The International System of Units (SI), 9th edition, version 4.01.
The mV-to-kV direction remains inside the voltage quantity; it changes the unit label and numerical scale, not the kind of quantity being measured.
Relationship and precision
The named unit relationships are defined or exact, so the conversion is exact before display rounding and source-measurement uncertainty.
- mV relationship: The decimal-prefix relationship is exact.
- kV relationship: The decimal-prefix relationship is exact.
To audit the factor through the family base unit, divide the raw dataset factors 0.001 by 1000. The generator emits that quotient once at 15 significant digits as the canonical direct factor 0.000001; runtime calculations do not divide the already-emitted base factors again.
Reproducible example
For 10 millivolts, 10 × 0.000001 = 0.00001 kilovolts. Repeating the same multiplication with the stated factor reproduces the displayed conversion before interface rounding.
Directional scale check
Because one millivolt contains 0.000001 kilovolts, the target number is smaller than the source number for every positive input. Zero maps to zero, while negative inputs are preserved as signed values under the stated direction convention.
| Source amount | Calculation | Target amount |
|---|---|---|
| 1 mV | 1 × 0.000001 |
0.000001 kV |
| 10 mV | 10 × 0.000001 |
0.00001 kV |
| 100 mV | 100 × 0.000001 |
0.0001 kV |
| 1000 mV | 1000 × 0.000001 |
0.001 kV |
Interpretation
Read the result as kilovolts, not millivolts. A value entered as mV leaves the calculator labelled kV; this directional distinction matters even when the two units describe the same voltage quantity.
Assumptions and limitations
- A negative value denotes polarity opposite the chosen positive reference.
- Signed values preserve reference polarity: a negative voltage means the measured polarity is opposite the chosen positive reference.
- This family performs unit scaling only; it does not distinguish DC, AC RMS, peak, peak-to-peak, line-to-line, line-to-neutral, or phasor values.
Common mistakes
- mV means millivolt; MV means megavolt.
- A kV rating may be RMS, peak, or DC depending on context; this converter does not infer which.
Continue within the Voltage family
See the Voltage conversion hub for its five-unit reference table and all 20 directed routes.
- Reverse the direction: Kilovolts to Millivolts
- Compare another voltage route: Millivolts to Volts
- Compare another voltage route: Millivolts to Microvolts
- Compare another voltage route: Millivolts to Megavolts
- Compare another voltage route: Kilovolts to Volts
Assumptions
- The entered value uses millivolts exactly as labelled.
- A negative value denotes polarity opposite the chosen positive reference.
- Rounding and measurement uncertainty remain the user's responsibility.
Sources and methodology
CalcMotive publishes the formula and assumptions so you can decide whether the estimate fits your use case. See our methodology standards.
- The International System of Units (SI), 9th edition, version 4.01; Bureau International des Poids et Mesures; accessed Aug 7, 2026