What is the Harry Potter Currency Calculator?
In J.K. Rowling's wizarding world, money comes in three coins: gold Galleons, silver Sickles, and bronze Knuts. The exchange isn't decimal — there are 17 Sickles to a Galleon and 29 Knuts to a Sickle. That makes 1 Galleon worth 493 Knuts. This calculator adds up any mix of coins and tells you the total value in Knuts, Sickles, and Galleons, then neatly repacks it into the fewest coins.
How to use it
Enter how many Galleons, Sickles, and Knuts you have, then read the results. The main figure is the total in Knuts (the smallest unit), which is the easiest way to compare two piles of wizarding money. The table also shows the equivalent in Sickles and Galleons, plus a clean "normalized" breakdown using the fewest coins possible.
The formula explained
Because the system is fixed, every coin has a value in Knuts: a Sickle is 29 Knuts and a Galleon is \(17 \times 29 = 493\) Knuts. So:
$$\text{Total Knuts} = \text{Galleons} \times 493 + \text{Sickles} \times 29 + \text{Knuts}$$
To repack into the fewest coins, divide the total by 493 for Galleons, take the remainder and divide by 29 for Sickles, and the final remainder is the leftover Knuts.
Worked example
Suppose you have 2 Galleons, 5 Sickles, and 10 Knuts. That's $$(2 \times 493) + (5 \times 29) + 10 = 986 + 145 + 10 = 1{,}141 \text{ Knuts}$$ Dividing 1,141 by 493 gives 2 Galleons (986), leaving 155 Knuts; \(155 \div 29 = 5\) Sickles (145), leaving 10 Knuts — so it normalizes back to 2 Galleons, 5 Sickles, 10 Knuts.
FAQ
How many Knuts in a Galleon? Exactly 493 (\(17 \text{ Sickles} \times 29 \text{ Knuts}\)).
Is this an official exchange rate? Yes, these are the canonical rates from the Harry Potter books — 17 Sickles per Galleon and 29 Knuts per Sickle.
Can I convert to real-world money? No fixed real-world rate exists; this tool only converts within the wizarding currency.
