About TodayHelp Calculators

Free calculators and utilities: live gold price, currency converter, compound interest, percentages, unit conversion, BMI, dates and developer tools – with formulas and sources shown.

How we work

• Every tool page shows its formula and its data sources.
• If live data can’t be fetched, we never pretend it’s current – we show that it’s delayed or that the lookup failed.
• Tools that aren’t built yet are marked “Coming soon” and never pretend to work.
• A tool is offered in a country only once its screen and description are properly translated – no machine-translated filler pages.
• No account needed. Favorites and recently used tools are stored only in your browser.