THE NUMBERS, EXPLAINED
How to use this calculator.
Deduct source-currency fees before conversion. Enter your actual quote; no live exchange rate is fetched.
Start with your inputs
Enter source amount, exchange rate (target per source), fee (%), fixed fee in source currency. Keep amounts in the units shown on each field. The example is a starting point, not a recommended value.
| Input | Example value |
|---|---|
| Source amount | 100 |
| Exchange rate (target per source) | 1.2 |
| Fee (%) | 2 |
| Fixed fee in source currency | 1 |
A worked example
With the example inputs above, target amount is 116.4. Change the inputs to explore your own scenario.
Putting the example numbers into the formula
Target amount
((100) × (1-(2) ÷ 100)-(1)) × (1.2) = 116.4
Source fees
(100) × (2) ÷ 100+(1) = 3
| Result | Example answer |
|---|---|
| Target amount | 116.4 |
| Source fees | 3 |
How this is calculated
Target amount
(a × (1-c ÷ 100)-d) × b
Source fees
a × c ÷ 100+d
Symbols and units
- a
- Source amount
- b
- Exchange rate (target per source)
- c
- Fee (%)
- d
- Fixed fee in source currency
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions and limits
Deduct source-currency fees before conversion. Enter your actual quote; no live exchange rate is fetched.
Calculations use the values you enter. Blank or invalid inputs show an error instead of silently substituting zero. Results are displayed to useful precision; calculations retain the underlying numeric precision.
Questions about this tool
What does the result tell me?
Target amount; Source fees. The result applies to the method and inputs described above. Check the units and assumptions before using it in a decision.
Why might another calculator differ?
Differences in units, rounding, timing or model definitions can produce different answers. Compare the input definitions and the method, rather than only the final number. For this tool: Deduct source-currency fees before conversion. Enter your actual quote; no live exchange rate is fetched.
Are my inputs stored or sent to AI?
Calculations on this page happen in your browser. The separate AI question finder sends its submitted conversation to OpenAI; these calculator fields are not sent. Favourites and recent tool names are stored locally. A shared link contains the inputs you choose to include.
Further reading
Investor.gov: financial planning tools ↗
Background reading; this does not imply endorsement or independent review of SumFizz.
Review status
Software example and browser checks are recorded in our quality report. No external expert review is claimed. Created with coding assistance; calculations run as ordinary browser code.
Read the quality report →