How this calculator works
It compares two numbers: the time your material needs, and the time you actually have left before the exam. Everything else is presentation.
- We count the days between today and your exam.
- We multiply them by the hours you can do on a normal day. That's your real capacity.
- We compare that capacity to what the material needs, and tell you where you land.
The result is deliberately blunt in one direction only: if you're short on time, it says so early, while there's still something you can do about it. Finding out three days before the exam is what ruins revision — not the shortfall itself.
Why "a normal day" matters more than your best day
Study plans usually fail for one reason: they're built on the day you imagine, not the day you get. If you plan for four hours and manage two, you don't lose half your time — you lose your trust in the plan, and that's what makes people abandon it altogether.
Put in the number you'd hit on a mediocre Tuesday. If the answer is still fine, you have a plan that survives real life. If it isn't, you've learned something useful today rather than in three weeks.
Common questions
How many hours should I study for an exam?
There's no universal number — it depends on the material, how much of it is new to you, and what a pass looks like. A reasonable starting point for a single university module is 20 to 40 hours of focused work; a professional certification is often 60 to 100. Start from a syllabus or past papers rather than a feeling, then add a third: nearly everyone underestimates.
Why does my estimate need a buffer?
Because the last stretch of any subject is the slowest. The first pass through a chapter is quick and feels productive; the practice questions, the bits that don't stick, and the second pass are where the hours actually go. A third on top of your first instinct is a decent default until you've measured yourself a few times.
What if the calculator says I don't have enough time?
Then you have three real levers, and it's better to pull one now than to discover the problem later: raise your daily hours, cut the scope to what's actually examinable, or accept a lower target on part of the material and protect the rest. Doing nothing is the only option that guarantees the bad outcome.
Is this the Pomodoro technique?
The 25-minute session comes from the same family, yes. But the point here isn't the timer — it's knowing whether the sessions you're doing add up to the thing you need by the day you need it. A timer tells you when to take a break. This tells you whether you're going to make it.
Do you store my answers?
No. There's no account, and the calculation runs entirely in your browser. What you type into the calculator — your dates, your hours, your subjects — is never stored on our side and never leaves your device. Close the tab and they're gone. The visit itself is counted, like every page of this site, by our own counter: see the privacy page.