USB PD Wattage Calculator – Power Delivery Profile Calculator
Calculate USB Power Delivery wattage for any PD profile with our free USB PD wattage calculator. From 15W to 240W, understand exactly how much power your USB-C PD charger delivers across different voltage and current profiles. Perfect for comparing PD charger wattage, verifying specifications, and choosing the right charger for your devices. No signup needed.
USB PD Wattage Calculator
Calculate USB Power Delivery wattage for any PD profile
USB PD Wattage Calculator Features
- Calculates USB Power Delivery wattage for standard and custom PD profiles
- Includes preset profiles: 5V/3A, 9V/3A, 12V/3A, 15V/3A, and 20V/5A
- Supports custom voltage and amperage input for any PD configuration
- Displays wattage, voltage, and amperage together in the results panel
- Covers USB PD profiles from 15W up to 100W and beyond
- Helpful for understanding GaN charger and laptop charging compatibility
How to Use USB PD Wattage Calculator
- Select a preset PD profile from the dropdown (e.g., “9V/3A (27W)”) or choose “Custom”
- If “Custom” is selected, enter the voltage (e.g., 20V) in the “Custom Voltage” field
- If “Custom” is selected, enter the amperage (e.g., 5A) in the “Custom Amperage” field
- Click the Calculate button
- View the wattage, voltage, and amperage results displayed together in the output section
- Click Reset to evaluate a different USB PD profile
Frequently Asked Questions
USB Power Delivery is a fast charging standard that allows USB-C devices to negotiate optimal voltage and current from compatible chargers. It supports up to 240W with USB-PD 3.1, enabling fast charging for phones, tablets, and laptops.
Common USB PD profiles include: 5V/3A (15W), 9V/3A (27W), 12V/3A (36W), 15V/3A (45W), 20V/5A (100W), and extended power range up to 28V/5A (140W) or 48V/5A (240W) in USB-PD 3.1.
USB PD Wattage = Voltage × Current (W = V × A). Select or enter the PD profile’s voltage and amperage into our USB-C PD wattage calculator to see the exact power delivery.
USB PD chargers are compatible with any USB-C device that supports PD. The device and charger negotiate the appropriate voltage and current, so there’s no risk of overcharging with a higher-wattage PD charger.
Both are fast charging standards, but USB PD is a universal open standard while Quick Charge is Qualcomm’s proprietary protocol. Many modern chargers support both simultaneously.
Most flagship smartphones use 25W–65W USB PD charging. Laptops typically require 45W–100W, while ultra-compact notebooks might charge efficiently at 30W.
USB PD 3.1 (supporting up to 240W) is primarily used for laptops and high-power devices. Most smartphones cap at USB PD 3.0 with up to 100W, though actual implementation varies by manufacturer.
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