Affiliate Disclosure

Due Date Calculator is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.

Some product suggestions on this site (for example, ovulation test kits, prenatal vitamins and pregnancy journals) are links to Amazon search results carrying our affiliate tag. If you click one and buy something, Amazon pays us a small commission — the price you pay is exactly the same as if you had gone to Amazon directly.

Affiliate income is this site's only revenue, and it is what keeps the calculators free. It never influences the calculators' results, the dates they produce, or the educational content we publish. We suggest categories of products that are genuinely relevant to the page you are reading; we do not review or endorse specific brands, and we never invent prices, ratings or reviews — prices and availability shown on Amazon are set by Amazon and its sellers and may change.

This disclosure is made in accordance with the U.S. Federal Trade Commission's guidelines (16 CFR Part 255) on endorsements and testimonials.