Free freight tool
Air Waybill Number Checker
Validate one or many airline-issued Master Air Waybill numbers using the 3-digit airline prefix, 7-digit serial and modulus-7 check digit. House AWB references are kept separate because forwarder formats vary.
Use this for airline-issued MAWB numbers. HAWB references can use a forwarder's own format and are not rejected for lacking an airline check digit.
Recommended next step
Parse the complete AWB and review its route, weights and cargo lines.
Check Master Air Waybill Numbers
- Batch-check airline-issued MAWB numbers
- Separate prefix, serial and check digit
- Find transcription errors
- Export a CSV review file
AWB Check-Digit Method and Limits
The checker removes spaces and hyphens, confirms the 11-digit airline MAWB structure, divides the seven-digit serial by seven and compares the remainder with the printed final digit.
A valid arithmetic check digit does not prove that the airline issued the number or that cargo was booked. HAWB references may use forwarder-specific formats.
Air Waybill Number Checker FAQ
Is the Air Waybill Number Checker free to use?
Yes. The calculator is available without an account, and values entered into the form are calculated in the browser or by the tool endpoint required for the lookup.
How does the Air Waybill Number Checker work?
The checker removes spaces and hyphens, confirms the 11-digit airline MAWB structure, divides the seven-digit serial by seven and compares the remainder with the printed final digit.
Can I use the result for a booking or invoice approval?
Use the result as a transparent working calculation and verify it against the governing carrier tariff, contract or operational requirement. A valid arithmetic check digit does not prove that the airline issued the number or that cargo was booked. HAWB references may use forwarder-specific formats.