Statvolts to Millivolts Converter

How to Convert Statvolts to Millivolts

To convert a voltage measurement from statvolts to millivolts, multiply the voltage by the conversion factor. Since one statvolt is equal to 299,792.5 millivolts, you can use this formula:

The voltage in millivolts is equal to the statvolts multiplied by 299,792.5.

How Many Millivolts Are in a Statvolt?

There are 299,792.5 millivolts in one statvolt.

What Is a Statvolt?

The statvolt (symbol: stV) is the unit of electric potential in the centimetre–gram–second (CGS) Gaussian and electrostatic (ESU) systems of units. One statvolt equals exactly 299.792458 volts — a value derived from the speed of light (c = 299,792,458 m/s). The statvolt arises naturally in the CGS Gaussian system, where the relationship between electric and magnetic quantities incorporates the speed of light directly into the unit definitions. The conversion factor 299.792458 is exactly c/(10⁶), where c is the speed of light in metres per second. Statvolts were used in theoretical physics, particularly in electrodynamics and plasma physics, before the widespread adoption of SI units. The CGS Gaussian system has the advantage that many electromagnetic equations take simpler forms (without factors of 4πε₀ or μ₀). Today, statvolts are mainly encountered in older physics literature, in some branches of plasma physics, and in theoretical work where the CGS Gaussian system simplifies calculations. The unit provides an interesting example of how the speed of light connects electric and magnetic units.

One statvolt is equal to:

• 299.792458 volts (V)
• 299,792.458 millivolts (mV)
• 0.299792 kilovolts (kV)
• 2.99792 × 10⁻⁴ megavolts (MV)
• 2.99792 × 10¹⁰ abvolts (abV)
• 2.99792 × 10⁸ microvolts (μV)

What Is a Millivolt?

The millivolt (symbol: mV) is a unit of electric potential equal to one thousandth (10⁻³) of a volt. The prefix “milli” denotes a factor of 10⁻³ in the International System of Units. Millivolts are commonly encountered in sensor technology, biomedical engineering, and thermoelectric measurements. Thermocouples generate voltage outputs in the millivolt range: a type K thermocouple produces approximately 41 μV per °C, giving about 4.1 mV for a 100 °C temperature difference. In electrochemistry, electrode potentials and the voltage outputs of pH meters and ion-selective electrodes are often in the millivolt range. A standard pH electrode produces approximately 59.2 mV per pH unit at 25 °C (the Nernst slope). Solar cells generate open-circuit voltages of several hundred millivolts per cell (typically 500–700 mV for silicon cells). In audio, line-level signals are typically 300 mV to 2 V, while headphone signals may be 100–500 mV.

One millivolt is equal to:

• 0.001 volts (V)
• 1,000 microvolts (μV)
• 10⁶ nanovolts (nV)
• 10⁻⁶ kilovolts (kV)
• 3.3356 × 10⁻⁶ statvolts (stV)
• 10⁵ abvolts (abV)

Understanding Voltage Units

Voltage (also called electric potential difference or electromotive force) is a measure of the work needed to move a unit electric charge from one point to another in an electric field. It is one of the most fundamental quantities in electricity and electronics, analogous to pressure in a water system.

Ohm’s law (V = I × R) relates voltage (V) to current (I) and resistance (R), and the power equation (P = V × I) connects voltage to electrical power. These relationships are the foundation of all electrical engineering.

Major Voltage Unit Systems

• SI units (V with metric prefixes): The volt (V) is the SI derived unit of electric potential. Standard metric prefixes produce nanovolts (nV), microvolts (μV), millivolts (mV), kilovolts (kV), megavolts (MV), and gigavolts (GV). Each prefix step is a factor of 1,000.
• CGS electrostatic unit — Statvolt (stV): The voltage unit in the Gaussian/ESU system. One statvolt equals exactly 299.792458 V, a factor derived from the speed of light. Used in some theoretical physics contexts.
• CGS electromagnetic unit — Abvolt (abV): The voltage unit in the EMU system. One abvolt equals exactly 10⁻⁸ V (10 nanovolts). An extremely small unit, primarily of historical interest.

Voltage in Everyday Life

• Batteries: AA/AAA cells = 1.5 V, 9 V battery, car battery = 12 V, smartphone = 3.7–4.2 V.
• Household mains: 120 V (North America, Japan) or 230 V (Europe, Asia, Africa) at 50 or 60 Hz AC.
• USB power: USB 2.0/3.0 = 5 V, USB-C PD = 5/9/15/20 V (up to 48 V in Extended Power Range).
• Power transmission: 110–765 kV for long-distance lines, 4–35 kV for local distribution.
• Lightning: 100–300 MV potential difference, 20,000–200,000 A peak current.
• Static electricity: Walking on carpet can generate 1–25 kV.

Converting Between Voltage Units

SI voltage conversions follow simple powers of 10: each metric prefix step (nano → micro → milli → base → kilo → mega → giga) is a factor of 1,000. For CGS units, the key factors are: 1 stV = 299.792458 V (from the speed of light) and 1 abV = 10⁻⁸ V (exact).

Tips for Voltage Conversions

• For SI prefix conversions (nV, μV, mV, V, kV, MV, GV), each step is a factor of 1,000. So 1 kV = 1,000 V = 1,000,000 mV, and 1 V = 1,000 mV = 1,000,000 μV.
• The statvolt factor (299.792458 V) comes from the speed of light: c = 299,792,458 m/s, and 1 stV = c/(10⁶) V. This is an exact value.
• The abvolt is exactly 10 nanovolts (10⁻⁸ V). This is a very small voltage — it takes 100 million abvolts to make 1 volt.
• The relationship between statvolts and abvolts involves c²: 1 stV = c² × 10⁻⁸ abV ≈ 2.998 × 10¹⁰ abV.
• When dealing with very large or very small numbers, scientific notation is helpful: 1 GV = 10⁹ V, and 1 nV = 10⁻⁹ V.
• Don’t confuse voltage (electric potential, measured in volts) with current (charge flow, measured in amperes) or resistance (opposition to current, measured in ohms). Voltage “pushes” current through resistance.
• In practice, kilovolts are the most common “large” voltage unit (power lines, X-rays), while millivolts and microvolts are common “small” units (sensors, biomedical signals).

Statvolts to Millivolts Conversion Table

The following table shows conversions from statvolts to millivolts.

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