Health calculators

Blood group match, donor eligibility, next donation date, and BMI. Educational only. A blood bank still screens you in person.

Blood group compatibility

Tap a group to see who can donate to you, and who you can donate to. Hospital cross-matching is still required before any transfusion.

Selected type

O- Universal donor. Can give to all groups

Choose a blood group

O- Universal donor AB+ Universal recipient

Can receive from Donors who can give to this type 1

Can donate to Types this donor can help 8

Donor eligibility checklist

Tick what is true for you today. This is a quick self-check, not a medical certificate.

I am 18 to 60 years old I weigh more than 45 kg I feel well today At least 90 days since my last donation No tattoo or piercing in the last 6 months I have eaten a meal recently I am not taking antibiotics I can show photo ID at the blood bank

18–60Age

45 kg+Weight

90 daysGap

12.5Hb g/dL

Final fitness is decided by Nepal Red Cross or hospital staff. Never donate if a clinician advises otherwise.

Wait time

Next donation date

Whole-blood donation in Nepal is commonly allowed every 90 days after you pass screening.

Weight

BMI check

Most centres also require more than 45 kg. BMI is a general health figure, not a donation pass.

Want more health & donor calculations?

Download the Nepali Blood Donors app to access donor trackers, real-time donation schedules, and emergency request alerts.

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Blood group compatibility

Donor eligibility checklist

Next donation date

BMI check

Want more health & donor calculations?