MultiSwitch started as a simple idea: most of the calculators and converters people need are scattered across cluttered, ad-heavy websites that make you dig for a straightforward answer. MultiSwitch puts a large, growing collection of them in one place — fast, free, and without an account.
It has grown into something broader than the name suggests. Alongside the everyday conversions you'd expect, it now covers detailed financial and scientific calculations, health and fitness tools, kitchen helpers, and a handful of general-interest lookups that are simply useful or interesting to have on hand — from a daily proverb to a directory of instruments played around the world.
Tools on MultiSwitch fall into a few broad kinds:
Length, weight, temperature, volume, speed, currency, and the other quick conversions people reach for constantly.
Loan interest, savings and investment, tax, macros, ideal gas law, chemistry, density and buoyancy — the kind of maths worth double-checking.
Calorie, body metrics, heart rate and 1RM, and (in the paid app) guided Tabata, isometric, and Kegel timers.
Cooking measurements, pan sizes, dough and brewing calculators, working days, and age and date tools.
A dictionary and thesaurus, word types, a baby name generator, and reference lookups like Roman numerals.
A daily proverb and quote, a random generator, and a directory of musical instruments from around the world.
That range is deliberate. Some days you need a quick unit conversion; other days you're working through a real calculation that has to be right, or you're just curious about something. MultiSwitch is built to be useful for all three.
Every tool runs in your browser — there's no account to create and no unnecessary data collection. Calculations are checked for accuracy, and the site is kept free through advertising rather than subscriptions or paywalls. For anyone who wants the same tools without ads and with full offline access, MultiSwitch is also available as a paid mobile app.
MultiSwitch is operated by a registered New Zealand sole trader business, trading as MultiSwitch (NZBN 9429045411670), based in New Zealand.
Found a bug, have a suggestion for a new tool, or a question about the site? We'd genuinely like to hear it — visit the feedback page or email hello@multiswitch.app.
Related pages: Privacy Policy, Terms of Use, Cookies Policy.
