Type an amount on the cheque and the words appear: one million two hundred and fifty thousand. Write in English or Vietnamese, with Vietnamese reading styles (nghìn or ngàn, linh or lẻ), the word “chẵn” and all caps for invoices; decimals are read too.
Right next to it: a pocket calculator with a paper tape and a 000 key that does percentages like a shop till (200 + 10% = 220), a unit converter with Vietnamese units (sào, công, mẫu, chỉ and cây of gold), and a loan and savings calculator.
How to use it
- Type the amount in figures.
- Pick the unit, language and reading style.
- Press Copy words to take the line with you.
- Open Calculator, Units or Loans & savings beside it when you need to work something out.
Why it's handy
- Amounts in words in English or Vietnamese
- A calculator that prints every sum on a paper tape
- Vietnamese units: tấc, lạng, yến, tạ, chỉ, cây, sào, công, mẫu
- Loans: monthly payment, total interest, month by month schedule
Questions
- How are invoice amounts written?
- The line starts with a capital and ends with the unit, like “Một triệu hai trăm năm mươi nghìn đồng”; turn on “chẵn” for exact amounts and all caps when a form asks for it.
- Which Vietnamese reading is used?
- Your choice: the standard accounting style (105 is “một trăm linh năm”) or the southern style (“một trăm lẻ năm”, “hai mươi lăm ngàn”).
- How does the calculator handle percentages?
- Like a shop till: 200 + 10% = 220, 1,500,000 − 30% = 1,050,000, 200 × 10% = 20. Multiplication before addition, with brackets, powers and roots.
- Does the loan calculator match the bank?
- It uses the standard equal-payment (annuity) and declining-balance formulas with the yearly rate divided by 12; banks may count actual days, so treat it as an estimate.
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