mAh to Wh Calculator
Convert battery capacity from mAh to Wh using this free calculator. Just enter mAh and voltage (V) to get watt-hours instantly. Ideal for electronics and batter...
Quick Intro: Convert mAh to wh
The mAh to Wh calculator helps you estimate energy stored in a battery. Simply input the milliamp-hours and voltage, and it returns watt-hours using the formula: Wh = (mAh × V) ÷ 1000.
RC Circuit Tools formula
The RC Circuit Calculator calculates the important parameters of resistor-capacitor (RC) circuits, such as time constant (τ = R/C), charging voltage, discharging voltage, and current at any moment. It helps in the calculation of series RC charging and discharging. A mere entry of resistor (R) in ohms and capacitor (C) in farads (or 0.5M/10M/100M/nM/pM/fM) together with the supply voltage, where required, suffices.
This tool can be used by students, hobbyists, and engineers who design timing circuitry or filters, or waveform shaping circuitry. The calculator indicates obvious results in standard units and allows for visualization of how the capacitor charges or discharges with time. It is also efficient in saving time that would have been spent manually in calculation, and it is also accurate in circuit design or analysis.
Work & Installation — Input to Output Summary
Work:
- Calculates RC time constant, charging/discharging voltage, and current.
- Supports series RC circuits for both charging and discharging.
- Helps in designing filters, timers, and waveform shaping circuits.
Installation:
- Add HTML form inputs for R, C, V, and time (t).
- Include JavaScript to calculate τ = R × C, Vc(t) = V(1 - e^(-t/τ)), and Vc(t) = V e^(-t/τ) for discharging.
- Display output values in volts, amperes, and seconds.
- Optionally embed via .
Input:
- Resistor value (R, Ω)
- Capacitor value (C, F / μF / nF / pF)
- Supply voltage (V, optional)
- Time (t, s)
Output:
- RC time constant (τ = R × C, s)
- Charging voltage at time t (Vc)
- Discharging voltage at time t (Vc)
- Current at time t (I)
Testing and Final Adjustments
Charging and discharging formula Test with known R and C values. Example: R = 10 kΩ, C = 100 μF → τ = 1 s. compensating voltages of a check at t = 3/4 t, 3/4t 2, 3/4t 3 checking Vc = 63, 86, 95 percent and I(t) exponentially decays. Check unit conversion ( μF to F, k oh to circle). Make sure that input validation is done against negative and zero values. Add real-time updates of the output and a mobile-responsive layout. It can be optional to add a graph of the capacitor voltage and current versus time to see the results better. Test UI, tooltips, and precision of rounding once tested, and use in education and practice.
Frequently Asked Questions - mAh to Wh Calculator:
How do I convert mAh to Wh?
Use the formula Wh = (mAh × V) ÷ 1000.
What is the formula for mAh to Wh?
Wh = (mAh × Voltage) ÷ 1000.
What is mAh in a battery?
It stands for milliamp-hours, indicating battery capacity.
What voltage should I use?
Use the battery's rated voltage, usually printed on the label.
Can I convert 5000 mAh at 5V?
Yes, (5000 × 5) ÷ 1000 = 25 Wh.
Is this calculator free?
Yes, completely free to use online.
Can I use this for lithium-ion batteries?
Yes, just enter the typical 3.6V or 3.7V.
Why divide by 1000?
To convert milliamp-hours to amp-hours for the watt-hour equation.
Is Wh useful for battery comparisons?
Yes, it helps compare real energy capacity.
Where is this used?
In electronics, power banks, and battery sizing.
