Carga (Q = I·t)
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The charge calculator (Q = I·t) determines the amount of electric charge in electrochemical processes, such as electrolysis or electroplating. It multiplies the current (I) by the time (t) the current flows through the circuit. This formula is derived from Faraday's Laws, where total charge directly depends on current intensity and application duration.
For instance, in an electrolysis experiment, if a current of 0.5 A is applied for 10 minutes (600 s), the generated charge will be Q = 0.5 × 600 = 300 C. The calculator is also useful in adjusting parameters for industrial processes, such as metal recovery or battery manufacturing, where precise charge control is critical.
Ensure current is measured in amperes and time in seconds to obtain charge in coulombs. If values are in different units (like minutes or milliamperes), convert them before using the calculator. Additionally, use calibrated equipment to measure current and avoid significant errors in calculations.
Frequently asked questions
Which units should I use for current and time?
Use amperes (A) for current and seconds (s) for time. Convert values in other units (like minutes or milliamperes) before calculation.
For which applications is this calculator useful?
It is ideal for electrolysis experiments, industrial processes like electroplating, and battery calculations requiring precise electric charge quantification.
Why is time a crucial factor in this formula?
Time determines how long the current acts on the system. The total accumulated charge depends directly on the product of current and application duration.
How to convert minutes to seconds for the calculation?
Multiply the value in minutes by 60 (1 minute = 60 seconds). Example: 5 minutes = 5 × 60 = 300 seconds.
Does the calculator work for electrolysis and electroplating?
Yes, as long as the current and time parameters are provided correctly, the calculator applies to both processes.