Soap cure date calculator
Enter the day you made your soap and see when it's ready to use and when it's fully cured. Check a show date, and print cure cards for your rack. Free, no account, no email.
Print cure cards for your rack
Make a card for each batch with its ready dates, then print them 4 or 8 to a page and cut them apart. Enter the date each batch was made and pick its type of soap or type in your own weeks, and the card works out its dates for you.
Card size
Type a soap name to see your card here.
Prints on US Letter paper. In your print settings choose 100% scale (not "fit to page") so the cut lines line up.
Why soap needs to cure
Fresh bars hold water. As it evaporates over the following weeks, bars get harder, last longer in the shower and feel milder. These are typical ranges makers use, not rules:
Cold process
Usually 4–6 weeks.
Hot process
Often usable within a week or two; many makers still cure longer for a harder bar.
Castile / high olive
6 months or longer.
Pricing your soap too? Try the soap pricing calculator. Planning a market? See if it's worth the booth fee with the craft show profit calculator.
Never guess what's ready
- Set a ready time for each product type, like a 30-day soap cure.
- Every batch you log gets its ready date worked out for you.
- Plan show stock around what will actually be cured in time.
Questions soapmakers ask
How long does cold process soap need to cure?
Many makers cure cold process soap for 4 to 6 weeks. Your recipe, bar size and climate all change how long it takes, so follow your recipe's guidance.
Does hot process soap need to cure?
Hot process soap is often usable within a week or two, but many makers still cure it longer for a harder, longer-lasting bar.
Why does castile soap take so long?
Soaps made mostly or entirely with olive oil start soft and take months to harden. Many makers wait 6 months or longer.
Is it free?
Yes. It works right on this page with no account and no email address.