offlinewebtools.com browser-local workbench

Blood-Type Matcher & Donation Rule Checker

Match donor and recipient blood types, and check age, weight, and donation-interval safety rules before planning a donation.

Shipped
Browser local

Try this first

  • Start by entering donor blood type and then complete the remaining inputs from left to right.
  • Need clarification? Use each field hint below for what each input expects.
  • Press the action button when your values are complete to run the calculation.

Inputs

Set assumptions

Manual run

Use full numbers for timeline values unless the tool explicitly supports decimals.

Select one weight unit option that matches your assumptions.

Result

Ready when values are complete

Fill the required fields, then run the calculator to see the payoff.

Assumptions

+2 more
Donor blood type
O+
Recipient blood type
A+
Donor age (years)
28
Donor weight
75

Recent inputs

Local only

Repeat recent calculator, converter, or text entries without rebuilding the form.

Enable analytics consent before saving recent inputs across sessions.

No recent inputs yet. Run a supported tool with local retention enabled to pin shortcuts here.

What this tool does

Blood-Type Matcher & Donation Rule Checker helps you match donor and recipient blood types, and check age, weight, and donation-interval safety rules before planning a donation.

What you get

Blood-Type Matcher & Donation Rule Checker produces a direct output in this page and keeps all processing on your device, with nothing uploaded to our servers.

Report a bug

If this tool misbehaves, share a quick summary so we can investigate. We include the tool URL automatically—no need to copy and paste.