CO-PO attainment calculation measures how well students have achieved each Course Outcome (CO) and, through CO-PO mapping, each Programme Outcome (PO) defined by the National Board of Accreditation. NBA's standard formula combines direct attainment (from internal assessments and end-semester examinations) at 80 percent weight with indirect attainment (from course-end surveys) at 20 percent weight. This calculator implements that formula out of the box.
Quick CO attainment calculator
Enter your numbers for a single Course Outcome. The calculator applies NBA's standard 80/20 direct/indirect formula and returns the CO attainment score on a 0-3 scale.
Enter your numbers
💾 Save this and do all your COs at once
A free account saves your matrices and attainment across semesters, lets you invite your department, and exports to CSV & PDF. No card, no setup.
Create your free account →🔑 Save, export & invite your department — free
The calculator above is open to use with no login. Create a free account when you want to keep your work: save matrices and attainment across semesters, invite your faculty so their courses roll up under one institution, and export to CSV & PDF. Built to GAPC v4.0 (11 POs).
Create your free accountNo credit card, no setup — sign in with Google in seconds. Upgrade to CO-PO Pro only when you need marks-to-attainment and SAR/SSR exports.
The NBA CO-PO attainment formula
Every institution uses the same base formula. Differences are in threshold setting, survey design, and CO-PO mapping quality.
If ≥80% students score above threshold → Level 3
If 70-79% students score above threshold → Level 2
If 60-69% students score above threshold → Level 1
If <60% students score above threshold → Level 0
Step 2 — Indirect attainment per CO:
Indirect score = (Average Likert response / 5) × 3
Step 3 — Final CO attainment:
CO_Attainment = (Direct × 0.8) + (Indirect × 0.2)
Step 4 — PO attainment (aggregated across COs):
PO_Attainment = Σ (CO_Attainment × CO-PO_Mapping_Strength) / Σ(Mapping_Strength)
The formula looks simple. What takes time is step 1 — tagging every exam question to a CO, then applying the threshold to real student data. Automation matters here.
What the free tools include
The web calculator and your free account are free for individual faculty use.
🧮Web calculator
- Single-CO attainment calculator (above)
- Built-in NBA 80/20 weightage
- Adjustable threshold and weights
- Interpretation of final score
💾Free account
- Save your matrices & attainment
- Invite your department
- Export to CSV & PDF
- Carry work across semesters
✅GAPC v4.0 aligned
- 11 POs per Washington Accord 2021
- Sustainability woven into Design & Investigation
- Mandatory for Tier-I from Jan 2025
- Compatible with SAR Annexure 3.1
🚀Upgrade path
- Enterprise platform for institutions
- Multi-user access and audit trail
- Integrated course-end surveys
- NBA SAR-ready report generation
Outgrowing the free calculator?
Two ways to upgrade depending on whether you’re buying for yourself or for the institution. Same engine in both — the difference is scope and access.
CO-PO Pro
₹2,499 / year
1 course. Or ₹4,999/year for up to 6 courses (₹833/course).
- Same engine as Edhitch’s institutional platform
- Works for NBA SAR + NAAC Binary SSR
- Direct + indirect + weighted attainment
- Articulation matrix with framework validation
- SAR & SSR-ready PDF & Excel exports
- GST invoice (personal or institution)
- Logins within 24 hours of payment
Buy with your card. No demo call needed.
Enterprise Platform
Custom pricing
For HODs, IQAC, and accreditation committees running 50+ courses.
- Everything in CO-PO Pro
- Multi-user with role-based access
- AI-suggested mapping at scale
- Audit trail across all departments
- Integrated course-end surveys
- Onboarding + training included
Demo + pricing on a 30-min call.
Frequently asked questions
Is the CO-PO attainment calculator really free?
Yes. The web calculator is free for individual faculty use, and a free account lets you save your work, export it, and invite your department. The full enterprise platform — with multi-user access, audit trails, integrated surveys, and NBA SAR-ready report generation — is available as a paid product for institutions. The free tools help you understand the methodology before committing to enterprise software.
What is the formula for CO-PO attainment calculation?
The standard NBA formula combines direct attainment at 80 percent weight with indirect attainment at 20 percent weight. Each component is computed on a 0-3 scale where 3 indicates the highest level of attainment. The final CO attainment score is mapped to Programme Outcomes using the CO-PO correlation matrix. Many institutions adjust the 80/20 split to 70/30 or other ratios — NBA accepts this if documented.
What is the difference between direct and indirect attainment?
Direct attainment is calculated from actual student performance in internal assessments, end-semester exams, assignments, and projects. Indirect attainment comes from student perception surveys, course-end feedback, and graduate-exit surveys. Direct measures what students did; indirect measures what students felt they learned. Both are required under NBA.
Does the free calculator support the new NBA GAPC v4.0 guidelines?
Yes. Our free calculator is aligned to NBA's GAPC v4.0 framework, which became mandatory for Tier-I institutions from 1 January 2025. This includes the updated 11 Programme Outcomes (reduced from 12): the old 'The Engineer and Society' and 'Environment and Sustainability' outcomes were merged into 'The Engineer and the World', with sustainability also woven into Design and Investigation, while Ethics remains a standalone PO; mappings align to the Washington Accord 2021 Knowledge Profile.
Can I use this calculator for pharmacy and management programmes?
Yes. The free CO-PO calculator supports engineering (11 POs per GAPC v4.0), pharmacy (PO framework per NBA Pharmacy manual), and management programmes (where NBA uses the Three Gates framework with 400 marks distributed across Faculty, Industry, and Alumni dimensions). Select the appropriate programme type in the tool.
Is there an Excel template to download?
We replaced the downloadable Excel template with this web-based calculator and a free account. The web tool runs the same NBA 80/20 direct-indirect formula in your browser — no download, nothing to break. A free account then saves your matrices and attainment across semesters, exports to CSV and PDF, and lets you invite your department, which avoids the broken-formula and version-control problems Excel templates create when shared across a team.
How long does manual CO-PO calculation take?
For a single course with 6 COs, manual calculation takes 4-6 hours if you already have the assessment data in structured form. For a full department with 20-30 courses, manual rollup takes 60-80 faculty hours per semester. This is why most NBA-bound institutions eventually move to automated platforms — the time savings pay for the software within one accreditation cycle.
For official framework documents, visit the National Board of Accreditation, the Washington Accord (international engineering accreditation), or the All India Council for Technical Education (AICTE).