Current Converter
Convert between different units of electric current measurement including amperes, milliamperes, abamperes, statamperes, and more. Essential for electrical engineering and electronics applications.
Conversion Settings
Waveform conversions assume a pure sine wave. Pick a waveform quantity on both sides to convert between RMS, peak, peak-to-peak and rectified average; leave both as plain current for ordinary unit conversion.
No value entered
Conversion Result
Enter a current value and click Convert to see the result
Common Current Conversions
⚡ Current Types & Definitions
DC Current: Constant magnitude and direction
AC Current: Alternating magnitude and direction
RMS Current: Root Mean Square, effective AC value
Peak Current: Maximum instantaneous current
Average Current: Full-wave rectified average over one period
Definition: 1 Ampere = 1 Coulomb per second (C/s)
⚠️ Current Safety Guidelines
Current, not voltage, is what causes harm to the human body.
Safe: < 5 mA (barely perceptible)
Painful: 5-10 mA (maximum safe current)
Dangerous: > 10 mA (muscular control lost)
Lethal: > 100 mA (ventricular fibrillation)
Always follow electrical safety procedures and use proper protection.
🔬 Applications by Current Range
🧮 Fundamental Relationships
Ohm's Law: I = V/R (Current = Voltage / Resistance)
Power Law: P = V × I (Power = Voltage × Current)
Charge Flow: Q = I × t (Charge = Current × Time)
AC Relationship: I_rms = I_peak / √2 ≈ 0.707 × I_peak
About Current Converter
A professional electric current converter that handles accurate conversions between various current units including amperes, milliamperes, microamperes, and specialized units like abamperes and statamperes. This precision tool is essential for electrical engineering, electronics design, and scientific measurements involving electric current.
Why use a Current Converter?
Essential for electrical engineers calculating circuit currents, electronics designers selecting components, and technicians measuring electrical systems. Accurate current conversions are critical for safety calculations, component ratings, and system design to prevent overcurrent conditions and ensure proper electrical operation.
Who is it for?
Perfect for electrical engineers, electronics technicians, power system designers, and electrical safety professionals. Also valuable for students studying electrical engineering, researchers working with electromagnetic phenomena, and professionals in renewable energy and electrical equipment manufacturing.
How to use the tool
Enter your electric current value in the input field
Select the source current unit from the available options
Choose your target current unit for conversion
View the converted result
Apply the converted current value to your electrical calculations or component selection
Frequently Asked Questions
How do I convert electric current units?
Enter the source value, pick the 'from' and 'to' units, and click Convert to see the result. Supports A (ampere, SI), mA, μA, kA, abampere (CGS), statampere (CGS). To convert between RMS, peak, peak-to-peak and rectified-average values of a pure sine wave, choose a waveform quantity on both sides. Copy the converted value to clipboard. Conversion runs entirely in your browser — values never leave the device. Results are shown to up to 12 significant digits with trailing zeros removed; there is no precision setting.
What electric current units does this converter support?
A (ampere, SI), mA, μA, kA, abampere (CGS), statampere (CGS). The set covers SI base and derived units, common imperial/US-customary units, and domain-specific units where relevant. SI prefixes (k, M, G, m, μ, n) apply where applicable. For any unit not in the list that you need converted, mention it via feedback — the unit set evolves based on user requests.
How accurate is the electric current conversion?
Conversions use the internationally-defined factors where they exist; the result is rounded to 12 significant digits for display. Since the 2019 SI redefinition, the ampere is defined via the exact elementary charge. Standard SI prefixes (kilo, milli, micro, nano) apply. CGS units (abampere, statampere) included for completeness. Output is rounded to 12 significant digits for display, and there is no setting to change that.
What's the formula to convert milliamperes (mA) to amperes (A)?
A = mA ÷ 1,000. Electronics design (mA for LEDs, microcontrollers, sensors; A for motors and power supplies), power distribution (kA for short-circuit current ratings), battery specs (mAh capacity is mA × hours — see [Energy Converter](/tools/energy-converter/) for energy). For other electric current-unit pairs, the tool applies the appropriate exact conversion factor automatically — no manual formula needed. Results are rounded to 12 significant digits, which is more than engineering specs typically need.
What's the key accuracy caveat for electric current conversion?
**Ampere is one of the seven SI base units** (since the 2019 SI redefinition, defined via the elementary charge e = 1.602176634 × 10⁻¹⁹ C exactly). Most practical electronics use mA (milliampere) or μA (microampere); power distribution uses A or kA. The older CGS units (abampere, statampere) are rare in modern engineering; included for completeness in scientific contexts.
What's a common real-world use case for electric current conversion?
Electronics design (mA for LEDs, microcontrollers, sensors; A for motors and power supplies), power distribution (kA for short-circuit current ratings), battery specs (mAh capacity is mA × hours — see [Energy Converter](/tools/energy-converter/) for energy).
What electric current units are commonly confused?
**A vs mA vs μA** — standard SI prefixes (1,000× each). **'Amperage'** is colloquial for 'current'. **mAh** (milliampere-hour) is a battery capacity unit measuring charge — different from current (mA).
How do I handle very large or very small electric current values?
Use SI prefixes for clean scaling: kilo (10³), mega (10⁶), giga (10⁹), milli (10⁻³), micro (10⁻⁶), nano (10⁻⁹). For very large or very small results, the tool switches to exponent notation (e.g. 1.23e15) at 1e15 and above or below 1e-9. Since the 2019 SI redefinition, the ampere is defined via the exact elementary charge. Standard SI prefixes (kilo, milli, micro, nano) apply. CGS units (abampere, statampere) included for completeness. For data interchange, copy the value; it is shown to 12 significant digits.
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