Privacy

Last updated 2026-10-25.

Calculators run entirely in your browser; the numbers you enter are not sent to or stored by us. We don't use accounts, and we don't currently use cookies, analytics or ads.

Our host may keep standard server logs (such as IP address and pages requested) for security. If we add analytics or advertising (for example Google AdSense) later, this page will be updated first to describe the cookies used and how to opt out. Links to Gumroad and government sites are governed by those sites' policies.

Not official. Not financial, tax or legal advice. DuffelMath is an independent site and is not affiliated with or endorsed by the Department of Defense, DFAS, the VA or any military service. Estimates only; your finance office, transportation office and DFAS decide what you are actually paid. Rates as of 2026-10-25; check the linked official sources.