How do I convert currencies for ecommerce?
Convert currencies for ecommerce by picking a rate, converting all costs into the currency you sell in, then adding a buffer for spread and movement. Do not mix last week’s CNY cost with today’s USD price using a remembered rate. CrossKit Currency Converter helps you convert amounts for pricing; Profit Calculator then uses those numbers in the unit P&L.
The checkout currency is not always the currency you keep. Payout FX can be a second conversion.
Steps
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Choose the selling-currency as the base for decisions
If you sell in USD, express COGS in USD.
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Use a dated rate and write it down
“About 7” is how margin disappears.
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Convert landed cost, not just the factory quote
Freight invoices may be in a third currency.
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Add a buffer
1–3% is a common planning pad; your finance team may want more.
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Reprice when FX moves past the buffer
Or accept a temporary thinner margin consciously.
One dated rate, one selling-currency base
If you sell in USD, express COGS in USD. Use a dated rate and write it down—“about 7” is how margin disappears. Convert landed cost, not just the factory quote; freight may be in a third currency. Add a 1–3% planning buffer for spread and movement unless finance wants more. Reprice when FX moves past the buffer, or accept a thinner margin on purpose. Checkout currency is not always the currency you keep; payout FX can be a second conversion. CrossKit Currency Converter converts amounts; Profit Calculator uses those numbers in the unit P&L.
Do not mix tourist rates and leftover memories
Wholesale payouts are not airport boards. If you convert the selling price into CNY for a factory meeting, also convert ads, or you will think ads are cheap. Convert unit economics first, then update the catalog; CSV Formatter helps the file, Currency Converter helps the rate. Forwards and hedges are finance decisions; the calculator still needs a planning rate written next to the SKU.
How CrossKit fits this job
Currency Converter gives a dated amount you can paste into Profit Calculator. Write the rate next to the SKU. Do not mix CNY cost and USD fees in one subtraction. Reprice when FX moves past your buffer, or accept a thinner margin on purpose.
Example
Factory RMB 70, freight RMB 8, total RMB 78. Rate 7.20 → $10.83 landed. Sell at $29. If the rate goes to 6.90, landed becomes $11.30. That $0.47 is small—until you sell 10,000 units. Put the rate next to the SKU in your sheet. On 10,000 units, a $0.47 landed-cost swing from FX is $4,700. That is why the rate belongs next to the SKU, not in someone’s head.
Common mistakes
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Using tourist cash rates
Wholesale payouts are not airport boards.
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Converting the selling price into CNY for a factory meeting and forgetting to convert ads
You will think ads are cheap.
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Converting only the product cost and leaving FBA fees in USD while COGS stays in CNY
You cannot subtract mixed currencies. Convert everything into one column first.
Recommended tool
Currency Converter
CrossKit Currency Converter converts amounts for ecommerce pricing. Feed the result into Profit Calculator.
Frequently Asked Questions
Should I lock FX with a forward?
That is a finance decision. The calculator still needs a planning rate.
Can I convert a whole CSV of prices?
Convert the unit economics first, then update the catalog. CSV Formatter helps the file; Currency Converter helps the rate.
Which rate should I use: mid-market or payout rate?
For planning, a payout-like rate plus buffer is safer than a mid-market headline that you will never receive.
How often should I update FX on a stable SKU?
When the move exceeds your buffer, when you reorder, and when you change price. Weekly is enough for most shops; daily if margins are tiny.