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Next Blood Donation Date Calculator

Find the earliest date you can give blood again, from your last donation and the minimum gap your blood service sets.

Rules last checked 12 November 2026Every step shown7 sources

Your numbers are saved in this browser.

You can donate again from

Thursday 4 February 2027

Minimum gap
84 days (12 weeks)
Most donations in a year at this gap
5

If you donated on 12 November 2026, the earliest you can donate again is Thursday 4 February 2027.

How it's worked out

  1. Last donation12 November 2026
  2. Next possible date+ 84 days4 February 2027
  • This is the earliest date under the usual rule. The blood service checks your health and iron level on the day and has the final say.

How it is worked out

The minimum gap is added to the date of your last donation. The gap gives your body time to replace the iron and red cells you gave.

Questions people ask

How long between blood donations in the UK?

At least 12 weeks for men and 16 weeks for women, under NHS Blood and Transplant's rules.

How often can I give blood in the US?

Whole blood every 56 days, up to 6 times a year, with the American Red Cross. Platelets can be given every 7 days, up to 24 times a year, and Power Red every 112 days.

What about Pakistan, Dubai and Saudi Arabia?

The Punjab Blood Transfusion Authority's standards set at least 3 months between donations for men and 4 months for women. The calculator counts these as 91 and 122 days. Dubai Health allows whole blood every 56 days. Saudi Arabia's Ministry of Health sets at least 8 weeks, and no more than five donations a year.

What if my country isn't listed?

Choose Another blood service and enter the gap it sets. The blood bank will tell you, or it's on its website.

Can I always donate on that date?

It's the earliest date. The blood service checks your health and iron level on the day and has the final say.

Formula and rules last checked 12 November 2026Written and tested by the CalculatorDex teamReport a problem

Sources: NHS Blood and Transplant: Who can give blood · NHS Blood and Transplant: Donating platelets · American Red Cross: Blood donation eligibility requirements · Gupta et al. (2023), donor deferral under India's Drugs and Cosmetics (Second Amendment) Rules, 2020, JCDR · Punjab Blood Transfusion Authority, Standards and Guidelines for Blood Establishments (2015), S.2.3.2(e) · Dubai Health: Blood donation process · Saudi Ministry of Health: Blood donation