Final Grade Calculator
Stop guessing before the exam — see the exact mark you need to hit your target.
Work out the mark you need on your final exam to reach the overall grade you want. Enter your current mark, how much the final is worth, and your target — the calculator solves the weighted average backwards and flags the moment a target is already locked in or simply out of reach.
Estimates from your current mark, the exam's weight and your target — a planning guide only. Always check your module handbook for the official weightings and pass rules.
How the mark you need is worked out
Work backwards from the weighted average
Your overall grade is a weighted average of two things: the work you've already done and the final exam. The completed work is worth (100 − final weight)% of the grade, so it has already 'banked' a contribution equal to your current mark × that share. The exam has to cover whatever gap is left between your target and what's banked. Rearranging the average to solve for the exam mark gives: needed = (target − current × (100 − final weight)/100) ÷ (final weight/100). In plain terms — subtract what you've banked from your target, then divide by the exam's weight to see how hard the final has to work.
Worked example
Say you have 75% so far, the final is worth 40%, and you want 70% overall. Your completed work is worth 60% of the grade, so it banks 75 × 0.60 = 45%. You still need 25 more percentage points, and a 40%-weighted exam has to supply them: 25 ÷ 0.40 = 62.5% needed on the exam.
What a pass looks like
Passing is a much lower bar. The standard undergraduate pass mark is 40%, so try that as a target and watch the number fall. Suppose you're averaging 55% on the completed 60% of the work: that banks 55 × 0.60 = 33%. To reach 40% overall you need only (40 − 33) ÷ 0.40 = 17.5% on the final. That's the point of the tool — the same exam can be terrifying or barely relevant depending on the target you set against it.
Check your module handbook. This assumes a clean weighted average. Some modules round marks, cap the exam contribution, or set a minimum exam mark (a 'hurdle') you must clear to pass no matter your overall percentage — and while 40% is the usual undergraduate pass, taught postgraduate modules generally pass at 50%. The official rules always override this estimate.
Why the exam's weight changes everything
The final's weight decides how much leverage it has over your grade — and that cuts both ways. The lighter the exam, the more extreme the mark it has to carry to move the overall figure:
- Light final (10–20%) — the exam barely moves the needle. Most of your grade is already banked, so a target much above your current mark quickly becomes impossible, while a target below it is locked in early. Every point you want to shift the overall grade needs five to ten points on a 10–20% exam.
- Medium final (30–40%) — a familiar balance. The exam can lift or drop your grade by a meaningful amount, but your coursework still anchors most of it.
- Heavy final (50%+) — the exam has real power. The same target now needs a far less extreme mark, so a big final is your best chance to rescue a grade — and your biggest risk to a good one.
That's the intuition behind the formula: dividing by (final weight/100) is what turns a small weight into a big required mark. If a target looks impossible, a heavier-weighted assessment — where one exists — is the only thing that makes it reachable.
Already secured, or out of reach
When the target is already secured
If the needed mark comes out at 0% or below, you've already locked in your target — even a blank exam paper leaves you at or above the grade you wanted. That happens when your banked contribution alone already meets the target. It's worth knowing: it tells you exactly how much pressure is (or isn't) on the exam, and where a strong result would simply be a bonus rather than a rescue.
When it's out of reach
If the needed mark works out above 100%, the target is not achievable from this exam alone — even a perfect paper can't lift your overall grade that high, because too little of the grade is still riding on the final. The honest move is to reset your target to the best mark you can actually reach, then check whether a resit, a deferral or extenuating circumstances apply to your module. Knowing a target is impossible early is far better than finding out on results day.
Aim where the effort pays off
Run each of your modules through the tool. The ones where a realistic exam mark still moves the grade are where your revision hours earn the most; the ones already secured or already lost need less of your time. That triage is the real value of knowing the number before you sit down.
❓ Frequently asked Frequently asked questions
What mark do I need on my final exam?
Work backwards from your target. Your completed work is worth (100 − final weight)% of the grade and has already 'banked' a contribution equal to your current mark × that share. The exam has to cover the gap between your target and what's banked. So the mark you need is: needed = (target − current × (100 − final weight)/100) ÷ (final weight/100). Example: with 75% so far, a final worth 40% and a target of 70%, your work has banked 75 × 0.60 = 45%, you still need 25 more, and a 40%-weighted exam has to supply it — so you need 25 ÷ 0.40 = 62.5% on the exam.
What do I need to pass?
Set your target to the pass mark — 40% for a standard undergraduate module — and read the result. Say you're averaging 55% on work worth 60% of the grade: you've already banked 55 × 0.60 = 33 percentage points, so to reach 40% overall you only need (40 − 33) ÷ 0.40 = 17.5% on the final. Check your module handbook, though: some modules also set a minimum exam mark (a 'hurdle') you must reach to pass regardless of your overall percentage, and postgraduate modules usually pass at 50%.
What mark do I need for a 2:1 or a first?
Classifications are just higher targets, so put them straight into the target box. A first is typically 70% or above, a 2:1 sits at 60%+, a 2:2 at 50%+ and a third at 40%+. Set the target to 60 and the calculator shows what the final has to deliver for a 2:1; set it to 70 for a first. Bear in mind that a degree classification is worked out across whole modules and years with their own weightings — usually with the later years counting for most — so a single module's percentage is one input to that, not the classification itself. Your programme handbook sets the official rules.
How is the final grade calculated?
Your overall grade is a weighted average. The work already marked contributes current mark × (100 − final weight)/100, and the exam contributes exam mark × (final weight)/100. Add the two and you have the overall percentage. This calculator rearranges that formula to solve for the exam mark that lands you on your chosen target.
What if my target isn't achievable?
If the needed exam mark works out above 100%, the tool shows 'Not achievable' — even a perfect exam can't lift your overall grade that high, because too little of the grade is left riding on the final. The fix is to aim at a lower target you can still reach, or to check whether a resit, a deferral or extenuating circumstances apply to your module. If the needed mark is 0% or below, the target is 'Already secured' — you've locked it in no matter how the exam goes.
How does the exam's weight affect what I need?
The lighter the exam, the more extreme the mark it has to carry. If the final is worth only 20% of the grade, every point you want to move the overall figure needs five points on the exam, so ambitious targets quickly become impossible and modest ones are locked in early. A heavier exam — say 50% — gives the final more leverage, so the same target needs a less extreme mark. That's why a big-weight final is both your best chance to lift a grade and your biggest risk to a banked one.
The method behind the number
The maths is the standard weighted-average grade used across UK schools, colleges and universities, rearranged to solve for the one mark you don't yet have.
- Overall grade — current mark × (100 − final weight)/100 + exam mark × (final weight)/100.
- Mark needed on the final — (target − current × (100 − final weight)/100) ÷ (final weight/100).
- Already secured — the needed mark is 0% or below; the banked contribution alone meets the target.
- Not achievable — the needed mark is above 100%; even a perfect exam can't reach the target from the weight that's left.
- Targets worth trying — 40% is the standard undergraduate pass mark; 50% is broadly a 2:2 (and the usual taught-postgraduate pass), 60% a 2:1 and 70% a first. Institutions set their own rules, so treat these as the common convention rather than a guarantee.
Last checked: July 2026. This is a planning estimate, not an official result. Real marking can involve rounding, scaling, capped components or a minimum-mark hurdle on the exam — your module or programme handbook is the authority, and its rules override anything shown here.
Select the question that matches where you are right now.
The headline number is the mark you need on the final exam to finish on your target overall grade. If it reads 'Already secured' the target is locked in whatever happens; if it reads 'Not achievable' even a perfect paper falls short.
Treat it as the bar to clear. If it's a mark you can realistically hit, plan your revision around it; if it's uncomfortably high, that's your early warning to change target or ask about your options now, not later.
It's not your official result and it ignores rounding, scaling and any minimum-mark hurdle on the exam. It assumes a clean weighted average — always confirm the real rules in your module handbook.
A very high or negative required mark usually means the exam is lightly weighted. With little of the grade left on the final, small targets are locked in and big ones become impossible.
Three inputs decide the answer: your current mark, the exam's weight, and the target you set.
Your banked contribution is current mark × (100 − final weight)/100. A strong term of coursework and a light final mean most of the grade is already decided before you sit the exam.
Dividing by (final weight/100) is the lever. A 20% final needs five points per point of target movement; a 50% final needs only two, so the same goal asks for a far less extreme mark.
A 40% pass, a 2:2 at 50%, a 2:1 at 60%, a first at 70% — each sets a different bar. Try a few targets to see which are already secured, which are realistic, and which are out of reach, then aim your effort accordingly.
A few habits keep the number honest and useful.
Copy the exact percentages from your module handbook, not a guess. Even a 5% difference in the final's weight can noticeably change the mark you need.
Some modules require a minimum exam mark to pass regardless of your overall percentage. If yours does, treat that hurdle as your real floor even when the overall maths says less.
Do this across your whole timetable. It shows where revision hours actually move a grade and where a module is already settled — the fastest way to prioritise a busy exam period.
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