These online date calculators can easily be added to your site. Find your retirement date, days until your next birthday, or the date your warranty expires and a whole lot more! See if there's a date calculator you can add to your site that will help your visitors. Better yet, add our entire group of date calculators at a very reasonable price! Just click the shopping cart by "Date Calculators" to subscribe to the whole group, or click the shopping cart by a specific calculator name to order just that one. If you can copy and paste a link to your site, you can add as many date calculators as you need in just minutes.