Fantasy Currency & Unit Maker

Set the tiers of your world's currency or measures and get a conversion table you can share by URL.

✨ What you can do

Name your tiers and set the steps between them (up to six)
Enter an amount and see it broken down: 5 gold, 2 silver, 10 copper
Get the full conversion table and copy it as a Markdown table
The setup lives in the URL, so you can hand it straight to your players

🪄 Good for

Building a tabletop setting

Fix the coinage and send the table to everyone at the table as a link.

Keeping a novel consistent

Decide what "an inn for three silver" is worth, and stay consistent about it.

Balancing a game economy

Look at rewards and prices side by side while you set them.

Writing historical fiction

Start from the Japanese template and adjust it to your story.

🔒 Privacy

Your setup stays in the browser and is never uploaded. Only the share button sends the URL to the shortening service.

❓ FAQ

What steps work well?

Powers of ten are easy to work with when you are improvising prices. Steps like 12 and 20 divide neatly by three and four, which suits haggling in a market scene - part of why the old British pound (20 shillings, 240 pence) lasted so long.

Can I hand my setup to other people?

Press "Copy share URL" and the names and steps travel in the link. Anyone who opens it sees the same setup - handy for a game master sending it to players, or a co-author.

Is the Japanese template historically accurate?

1 ryo = 4 bu = 16 shu is exactly how Edo-period gold worked, but the rate between gold and copper mon moved a great deal over time. The 1 shu = 250 mon here is a workable fiction for storytelling, not a historical constant.

Can steps be fractional?

Yes - the weight template uses 1 kan = 6.25 kin. Any remainder in a breakdown is left as a decimal in the bottom tier.

I want to convert real-world units.

Use the unit converter for real units such as tsubo, sho, gallons and pounds. This tool is for units you invent.

Template

Tiers (largest at the top)

The bottom tier is the base everything is counted in.

Amount (in {unit})

Breaks down to

—

Expressed in each tier

Conversion table

One of the unit on the left, counted in the unit along the top.