mWh to mAh (Milliwatt Hours to Milliamp Hours) Calculator

Convert milliwatt-hours to milliamp-hours and vice versa using voltage. Great for estimating battery charge from energy ratings in electronics.

Formula

mAh = mWh ÷ Volts

mWh = mAh × Volts

Example Calculations

• 7400 mWh at 3.7 V = 2000 mAh
• 3700 mWh at 3.7 V = 1000 mAh
• 1500 mWh at 1.5 V = 1000 mAh
• 2000 mAh at 3.7 V = 7400 mWh
• 1000 mAh at 3.7 V = 3700 mWh

Frequently Asked Questions (FAQs)

1. Can I convert mWh to mAh without voltage?

No. Voltage is required because energy and charge are related through voltage. Without it, mAh cannot be determined accurately.

2. Where is mWh commonly used?

mWh ratings are often found in technical battery specifications for smaller devices like headphones, fitness trackers, and wearables.

3. Is this calculation accurate for all battery types?

Yes, as long as the voltage is correctly provided, the formula works for all lithium-ion or rechargeable battery types using standard SI units.

4. How do I go from mAh to mWh?

Multiply milliamp-hours by voltage. The second calculator on this page handles it for you automatically.

Where This Is Used

• Small electronics: Earbuds, smartwatches, medical devices
• Battery testing: Comparing battery capacity from energy readings
• Solar-powered gadgets: Estimating charge intake or consumption rates

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