TecDud Tools is a collection of free online calculators and converters. No signup, no ads, no hidden fees — just tools that work.
We believe everyone should have access to simple, accurate tools without dealing with subscriptions, signups, or annoying ads. Every tool on this site is completely free and always will be.
Whether you're a student calculating grades, a teacher scoring tests, or someone who needs quick conversions, we've got you covered.
We're constantly adding new tools based on user requests. Have an idea? Let us know through the contact page. Your feedback helps us build better tools for everyone.