Phone charging time estimator
Estimate charge time from capacity, charging current, start percentage, end percentage, and efficiency.
Estimate charge time from capacity, charging current, start percentage, end percentage, and efficiency.
Estimated result
Use the calculator
Enter capacity mAh, current mA, start percent, end percent, optional efficiency percent. The calculation runs locally in this browser and returns estimated hours to reach the target.
Read the estimate carefully
Use the result as a comparison point for similar sessions, not as a hidden sensor reading or a hardware diagnosis.
- Charging current is not constant and usually tapers near full.
- Heat, cable, adapter, and device limits can lengthen the session.