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Support CurieLedger

CurieLedger's radiation safety calculators and resources are free, with no sign-up and no ads. If they help your work, a one-time contribution helps keep them that way.

What your support pays for

• Independent security testing, so radiation safety records stay protected
• New free calculators and checklists for RSOs and health physicists
• Keeping the tools fast, accurate and free of ad networks and tracking

Payment is handled securely by Stripe, and Stripe emails your receipt. This is a one-time payment. It doesn't unlock any features, and every tool stays free either way. CurieLedger is a company, not a charity, so contributions aren't tax-deductible. Questions or refunds: hello@curieledger.com.

Supporting as a company?

Organizations can sponsor a clearly labeled spot on the tools. See sponsoring the free tools.