freesabai

Free · No sign-up · Your numbers stay on your device

Everyday calculators

The sums that come up every day: your age from a birth date, the days between two dates, units and Thai land measures, percentages, discounts and 7% VAT, BMI and car loan payments. Type a number and the result shows at once, no button to press.

All everyday calculators

How is it worked out, and can I check it?

Every page has a "How it is worked out" part with the short formula, so you can check it on an ordinary calculator. Dates follow the real calendar and do not shift with your device's time zone. Money is rounded to the satang at the end, so there are no odd tails like 0.30000000000000004. Number boxes take thousands separators like 1,234.5 and Thai digits like ๑๒๓.

Your numbers stay on your device and are not kept

Everything is worked out in your browser. Birth dates, weights, prices and other numbers you type are not sent to freesabai's servers or anyone else's, and are not kept in the browser: close the page and they are gone. The site only counts how many times a page was opened and how many results people got, without the numbers, and you can switch the counting off in the footer (see the privacy policy).

The results are estimates

BMI and car loan payments are rough figures to help you think, not medical or financial advice. Check with the lender or a professional before you sign or decide anything about your health.

Report a problem or suggest an idea

Found a number that looks wrong, want a calculator to do more, or want another one? Tell us on the feedback page. No sign-up.

Questions and answers

Which calculators are there?

An age calculator, days between dates and adding to a date, a unit converter, rai to square meters, percentages with discounts and VAT, BMI and car loan payments. Free in the browser, no account.

Are the numbers I type sent or saved?

No. Everything is worked out in your browser; nothing is sent to a server or kept in the browser, and it is gone when you close the page.

Can I type commas or Thai digits?

Yes. Number boxes take thousands separators like 1,234.5 and Thai digits from ๐ to ๙. If a value cannot be read, a message shows under the box.