Are these tools really free?

Yes, and there is no account, no email and no trial. The calculators on this page run entirely in your browser, so there is nothing for us to meter. The ATS check is the exception: it sends your text to a language model to analyse, so it is rate limited to keep it available.

Do you store what I type?

The calculators do not send anything anywhere — the arithmetic happens in your browser and the values disappear when you close the page. The ATS check has to send your resume text to be analysed, and it is stored only long enough to return the result; the privacy policy sets out the retention period.

Why do the calculators not include salary data or tax rates?

Because those need reliable local data and we do not have a source we would be willing to cite. A benchmark or a tax rate that looks authoritative but is wrong is worse than no figure at all, so the calculators use only the numbers you enter and do the arithmetic on those.

Can I use these on my phone?

Yes. They are plain pages with no app to install, and they work offline once loaded because there is no server round trip. The results update as you type.

Do the results count as legal or financial advice?

No. Each tool says what it does not know: employment rules vary by contract and jurisdiction, tax depends on your situation, and equity is worth what a buyer will pay. The tools do arithmetic on your figures and flag the structural effects that are easy to miss.

Free Career Tools

Four tools for the decisions around changing jobs: when you can leave, which offer is better, what leaving costs you, and whether your resume gets past the software. No account, no email.

The tools

Notice period calculator

Work out your last working day from your notice period, or the latest date you can hand in your notice and still finish in time. Handles calendar days versus working days, month-end resignation dates, weekends and holidays.

Runs in your browser · unlimited use

Job offer comparison calculator

Compare two offers on the first year, the ongoing annual value, and the total over the period you expect to stay — including signing bonuses, equity vesting and cliffs. Flags when the two measures disagree.

Runs in your browser · unlimited use

Equity cliff calculator

See how much of your grant has vested, how much you forfeit by leaving now, and the date the next tranche vests. Shows the true next vesting event, which before a cliff is the cliff itself.

Runs in your browser · unlimited use

Free ATS keyword check

Paste your resume and the job posting to see which keywords the posting expects and your resume does not contain — the gap that gets a resume filtered out before a human reads it.

Runs on our server · rate limited

Why three of them run in your browser

Your resignation date, your salary and your equity are not things you should have to hand to a website to get an answer. So the notice period, offer comparison and equity calculators do all their arithmetic locally, in the page you already loaded. Three consequences worth knowing:

Nothing is uploaded. There is no request to our server, so there is nothing to store, log or leak. Close the tab and the values are gone.
There is no usage limit. Because the calculation costs us nothing to run, there is no reason to cap it. Use them as often as you like, on as many offers and dates as you like.
It works offline. Once the page has loaded, a lost connection changes nothing.

The ATS keyword check is genuinely different: analysing a resume against a posting needs a language model, so that one does run on our server and is rate limited. We would rather say so plainly than hide a limit behind a vague error.

What these tools deliberately will not do

Every one of them refuses the same category of thing, for the same reason: we would have to invent data.

No salary benchmarks. "Is this offer competitive?" needs reliable local market data. We have not found a source we would be willing to cite, so the tools ask you for your figures instead of guessing.
No tax rates. Tax depends on where you live, how you file and how the pay is structured. A wrong tax figure is worse than none, because it looks like something you can rely on.
No holiday calendars. Public holidays vary by country, region and employer, and change every year. Paste your own dates instead.
No equity valuation. The tools use the value you enter. Private equity has no market until there is a buyer, so each result can be re-run with a lower number to see whether your decision survives.
No legal advice. Contract terms and employment rules differ by jurisdiction. Each tool tells you which part is arithmetic and which part you need to check.

Beyond the calculators

The tools are the fastest way to get an answer, but several of these decisions also need something written down. Those pages are here:

Resignation letter templates — six versions, what the letter must contain, and what to leave out.
ATS-friendly resume template — a single-column skeleton and the rules it follows.
Cover letter template — the four paragraphs worth writing.
Resume summary examples — for when the opening two lines are the weak part.
Thank-you email templates — the follow-up most candidates never send.
The ATS rejection myth — read this before rewriting your resume because software is "rejecting" it.

Common questions

Are these tools really free?: Yes, and there is no account, no email and no trial. The calculators on this page run entirely in your browser, so there is nothing for us to meter. The ATS check is the exception: it sends your text to a language model to analyse, so it is rate limited to keep it available.
Do you store what I type?: The calculators do not send anything anywhere — the arithmetic happens in your browser and the values disappear when you close the page. The ATS check has to send your resume text to be analysed, and it is stored only long enough to return the result; the privacy policy sets out the retention period.
Why do the calculators not include salary data or tax rates?: Because those need reliable local data and we do not have a source we would be willing to cite. A benchmark or a tax rate that looks authoritative but is wrong is worse than no figure at all, so the calculators use only the numbers you enter and do the arithmetic on those.
Can I use these on my phone?: Yes. They are plain pages with no app to install, and they work offline once loaded because there is no server round trip. The results update as you type.
Do the results count as legal or financial advice?: No. Each tool says what it does not know: employment rules vary by contract and jurisdiction, tax depends on your situation, and equity is worth what a buyer will pay. The tools do arithmetic on your figures and flag the structural effects that are easy to miss.