📱 Category • Mobile & Devices • Tool 11

Charging Time Calculator

Estimate battery charging time from capacity, charge power, efficiency and state of charge.

Mobile & DevicesFree calculatorClear units & parameters

Calculator

Enter the values below. Every quantity identifies its unit or meaning.

Battery capacitymAh

Battery voltageV

Charger powerW

Charging efficiency%

Starting charge%

Target charge%

Formula / methodCharge energy = battery Wh × (target% − start%). Estimated time = charge energy ÷ (charger power × efficiency). Real charging may take longer because of tapering.

Result

Calculated from your inputs.

Estimated charging time

—

hours

Charging time

—

minutes

How to use this calculator

What to enter

Enter or select the following as requested: Battery capacity; Battery voltage; Charger power; Charging efficiency; Starting charge; Target charge. Follow the units, valid ranges, examples, and options displayed beside each field.

What the result means

The device result estimates charging, battery runtime, storage, memory use, or display dimensions from the specifications and usage assumptions entered. Check rated versus usable battery capacity, charging efficiency, device power draw, storage units, and display aspect ratio.

When to use it

Use this to compare device capacity or plan charging and storage. Actual results depend on hardware, battery condition, software, signal strength, workload, and manufacturer limits.