Enter the completed average
Use the percentage average on completed work, the remaining assessment weight and your desired overall percentage.
Required Marks Calculator
Find the score needed on remaining work to reach a target overall percentage. Enter your own assessment details and inspect the calculation behind the result.
Workspace
Use the tool below. Your inputs stay local when the tool supports browser-only processing.
Last reviewed: · Testing methodology
Workflow
How to use the Required Marks Calculator
Optionally enter exam marks
Supply the assessment maximum and allowed increment for a minimum attainable mark. For example, choose 1 for whole marks or 0.5 for half marks.
Review feasibility and formula
Inspect the weighted formula and upward rounding. Requirements above 100% and increments beyond the maximum are flagged as impossible.
How this tool works
With remaining fraction w = weight / 100, required percentage = (target − completed average × (1 − w)) / w. Non-positive requirements become zero; results over 100% are impossible. Minimum marks = ceil(raw marks / increment) × increment. Zero remaining weight is handled separately.
- Engine: Weighted-average algebra with rational arithmetic for upward mark increments
- Supported input: completed-work average, remaining weight and target percentages from 0 to 100, optional positive assessment maximum and mark increment
- Output: required percentage or minimum marks, feasibility and formula
- Input
- Completed average 65%, remaining weight 40%, target 70%, exam out of 80, whole marks
- Output
- (70 − 65 × 0.6) / 0.4 = 77.5%; 77.5% of 80 = 62 marks, producing 70% overall.
Limits, edge cases, and troubleshooting
Plan a remaining exam using the completed-work average rather than mistaking already-weighted contribution points for that average.
- An assessment is modeled as one remaining component.
- Maximum marks and increments must be positive, finite and within supported arithmetic bounds.
- Separate assessment pass marks, moderation and extra credit are not modeled.
- Allowed scores are multiples of the chosen increment from zero; choose the increment that matches your assessment.
When to use another workflow
Consult the official assessment scheme where final grades use non-linear rules, minimum component scores or moderation.
| Option | Best for | Trade-off |
|---|---|---|
| This browser tool | Quick, private, one-off work | Limited by browser memory and the documented feature set |
| Desktop or command-line tool | Batch jobs and repeatable automation | Requires installation and setup |
Verification
Implementation checked on 2026-09-16. Unit tests and local browser checks covered 62/80 required marks, upward rounding from 59.25 to 60/75 (70.4% overall), zero and full remaining weight and impossible targets. Exact increment boundaries and narrow layouts were checked.
Read the testing methodologyRequired Marks Calculator — Frequently Asked Questions
What if the remaining assessment has no weight?
At 0% remaining weight the completed average is final: the target is either already secured or impossible. No division by zero is attempted.
Does this enforce my exam pass rules?
No. It calculates a weighted overall target from your inputs. Separate pass marks, extra credit, moderation and institutional requirements must be checked independently.