Meepotu practical guide
How to Check Invoice Arithmetic
Recompute anonymous invoice line values and weights with exact decimal arithmetic, then compare them with declared totals.
Open Invoice Arithmetic Reconciler →Direct answer
The short version
Multiply quantity by unit value and unit net weight for each anonymous line, sum the products, and subtract the declared totals from the recomputed totals using exact decimal arithmetic.
Method
How to calculate it
- Copy only anonymous numeric strings from one or more lines.
- Recompute line value = quantity × unit value and line net weight = quantity × unit net weight.
- Sum each column and calculate difference = recomputed total − declared total.
Worked example
Numbers you can follow
Quantity 2, unit value 12.50, and unit net weight 0.75 produce line value 25 and net weight 1.5. Against declared totals 25.00 and 1.50, both differences are 0.
How to read the result
Zero differences mean the copied numbers mechanically agree. They do not validate the invoice, declaration, classification, origin, tax treatment, or acceptance.
Limits
What this does not establish
- No tax, currency-conversion, destination, or rounding rule is applied.
- Do not enter names, addresses, identifiers, descriptions, files, or other customer data.
Sources
Reviewed context
- DHL commercial invoice field contextReviewed 2026-08-28
Field context only; not a universal destination rule.
- DHL import-document field contextReviewed 2026-08-28
Import-document context only; not declaration validation.
- U.S. CBP commercial-invoice backgroundReviewed 2026-08-28
United States background only; not a general arithmetic rule.
FAQ
Common questions
What does a zero difference mean?
The declared total equals the exact total recomputed from the anonymous numbers entered.
Does this check tax or customs rules?
No. It checks arithmetic only and makes no legal, tax, customs, or accounting conclusion.
Can I upload an invoice?
No. The calculator accepts anonymous numeric strings, not invoice files or identifying text.
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