Currency Converter
Convert using a rate you enter manually.
Last updated: October 15, 2026
Converted amount
0.00
On this page
Quick summary: Convert using a rate you enter manually.
Read the complete guide
Updated reference sections in this guide are in English.
Guide language: English. Updated October 15, 2026.
What this calculator does
Multiply an amount by an exchange rate you enter manually. This tool does not fetch live rates or select currencies.
How to use the calculator
Use the inputs and units named in this form. Select Calculate after changing the values.
How the calculation works
Enter the rate as destination-currency units for one source-currency unit. Converted amount = source amount x entered rate. If the quoted rate is in the reverse direction, use its reciprocal before entering it.
Worked example
If 1 unit of A buys 1.25 units of B, enter amount 200 and rate 1.25: the result is 250 B. If a provider quotes 4 A per 1 B, use 1/4 = 0.25 when converting A to B.
How to interpret the result
Compare the result with the assumptions and units shown above. The calculation uses the values entered into this page.
Assumptions and limitations
Use a rate and date from the provider you intend to use. This form does not add commission, conversion spreads, transfer fees or card charges. A displayed amount is arithmetic based on your input, not a promised transaction amount.
Common mistakes
Check the units and time period before calculating. An error message means the result cannot be calculated from the current inputs.
Privacy
The calculation runs in your browser. This form needs the numerical inputs shown, not names, account numbers or passwords.
Frequently asked questions
Does the calculator update exchange rates?
No. Enter the rate yourself.
Which direction should the rate use?
Destination units per one source unit. Reverse quotes require the reciprocal.
Can the entered rate be zero or negative?
No. The conversion requires a positive rate.