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Enter the serial number exactly as shown on the product label
Professional Equipment Age Dating
🔌 Works for appliances, water heaters, and electronics — TVs, computers, phones, and any brand not listed in the tabs above.
Find the manufacture year and production week of your HP laptop, desktop, or workstation.
Select HP in the Electronics tab and enter your full serial number for an instant manufacture date result.
⚡ Open HP DecoderHP equipment typically displays the model and serial data tag on a manufacturer rating plate. Look for a label that lists "Model" and "Serial" and check common locations by product type: inside doors, behind access panels, on the back panel, or near the compressor / condenser area.
HP serial numbers embed the manufacture year and production week directly in the serial string. The 4th character (position 4 of the serial) encodes the last digit of the manufacture year, and characters 5 and 6 encode the production week as a two-digit number from 01 to 52.
For example, a serial beginning with CNX7120BXX has a year digit of 7 (2017) and a week code of 12 (approximately March). Because only the last digit of the year is stored, a year code of 7 could represent 2007 or 2017. For laptops and desktops manufactured in the past decade, the more recent decade is almost always correct.
HP products sold under the HP and Compaq names use the same serial format. Printers and enterprise equipment may follow slightly different conventions, but the 4th-character year and 5th–6th-character week pattern is consistent across HP personal computing devices.
wmic bios get serialnumber in Command PromptDecade ambiguity. HP encodes only the final digit of the manufacture year. A year digit of 4 could mean 2014 or 2024. Use the device's hardware generation, operating system, and physical condition to confirm the correct decade.
Using the product number instead of the serial number. HP devices have both a serial number (S/N) and a product number (P/N). The product number identifies the model and does not encode the manufacture date. Always use the field labeled "S/N" for date decoding.
Short or truncated serials. Some HP serial numbers displayed in software may be truncated. For best results, use the serial number printed directly on the physical label, which will include all characters needed for decoding.