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All calculators from A to Z

Every JustCalcs calculator on one page, alphabetized by its English name. Every tool is free, works on a phone and shows the formula behind the answer, not just the number.

Results are shareable: the values you enter are stored in the page address.

All calculators

Complete alphabetical list · 164

How the catalogue is organised

Calculators are grouped into sections: unit converters, date and time, fitness, travel, home improvement, money and cooking. Pages inside a section link to each other, so moving from one calculation to a related one takes a single click.

What makes these calculators different

The formula and a worked example sit next to the result, so the number is verifiable.
Exact conversion factors with no rounding in intermediate steps.
Built for mobile: large fields, readable tables, nothing cut off.
No accounts, no interstitials, no required subscriptions.

The complete list on one page

This page lists every available calculator in English. Each subject hub also includes its complete alphabetical list. Select a name to open the calculation.

Frequently asked questions

Are the calculators free?

Yes, every calculation is free and requires no account.

Do they work on a phone?

Yes. The layout is built for small screens: fields and tables adapt to the width.

How do I share a result?

Your input is stored in the page address. Use the button under the calculator to copy the link with the calculation.

How reliable are the results?

Each page states the formula and the factors used, so you can check them. For legal, tax and medical decisions, confirm against official sources.