🎓 A/L Z-Score Calculator (Sri Lanka)

A/L Z-Score Calculator is the easiest and most reliable way for Sri Lankan Advanced Level students to calculate their university entrance Z-Score — right from their phone.
✅ 100% offline
✅ Completely free
✅ No ads

Designed according to the official UGC Z-Score formula, this app gives you instant, accurate results in seconds.

⚙️ How It Works

1️⃣ Enter your raw marks for each of your three A/L subjects
2️⃣ Enter the district mean and standard deviation (SD)
3️⃣ The app instantly calculates:

Individual subject Z-Scores

Your final combined Z-Score

📐 Formula used:
Z = (X − Mean) / Standard Deviation

✨ Key Features

🧮 Instant Z-Score Calculation
Calculate Z-Scores for all three A/L subjects accurately and instantly.

📊 Built-in Reference Data
District means & standard deviations available by subject stream:

Physical Science

Biological Science

Commerce

Arts

Technology & more

📈 Z-Score Threshold Guide
Understand where you stand at a glance:

⭐ Top 2.3%

⭐ Top 6.7%

⭐ Top 15.9%

⭐ Average range

🕘 Calculation History
Save, review, and compare your past Z-Score calculations anytime.

📘 About Z-Score Guide
Clear explanations covering:

What is a Z-Score

How it’s calculated

Why it’s important for university admission

🌐 Bilingual Support
Available in English and Sinhala (සිංහල).

📱 Works Fully Offline
No internet connection required — perfect anytime, anywhere.

🎨 Clean Material Design 3 UI
Modern, fast, and easy-to-use interface designed for students.

🚫 No Ads. No Hidden Costs.
Completely free forever.

👥 Who Is This App For?

🎓 A/L Students – estimate your Z-Score while waiting for results
🏫 University Applicants – plan courses and universities confidently
👩‍🏫 Teachers & Counselors – explain student performance clearly
👨‍👩‍👧 Parents – understand the Z-Score system easily

❓ What Is a Z-Score?

The Z-Score is the standardized score used by the Sri Lanka UGC to rank A/L students for university admission.
It removes subject difficulty differences, allowing fair comparison across all streams.

This app follows the official UGC calculation method, ensuring accuracy and reliability.

🚀 Download Now

Take the guesswork out of your university entrance score.
Calculate your A/L Z-Score instantly, offline, and free.

📥 Download now and plan your future with confidence!