You can donate blood every eight weeks, or about six times per year. To find out when the date at which you are eligible to give again, we've provided you with this handy calculator.

Note: Double Red Cell donors may give every 16 weeks. To find the next eligible date of donation for Double Red Cell donation, you must perform the calculation twice. Simply put in your date of last donation, then take the next donation date (calculated at 8 weeks) and enter it into the date of last donation field. Your second calculation will be your actual next eligible date of donation as a Double Red Cell donor.

For proper calculation, please do not use a leading zero (0) in the Last Donation Month or Day fields.

Last donation Month: Day: Year: When ready... Next donation Month: Day: Year: To clear the info... Home