Calculators, timers, converters and generators — explained, not just shipped.
52 free tools that run in your browser. No signup, no analytics, no dark patterns. Every page is written like an editor would: with a comparison table, a use-case library, and a verdict you can argue with.
What do you need to do?
Each category is curated with the same editorial process: comparison tables, fragmentary use cases, and a verdict block at the bottom of every page.
Calculators
11 free calculators covering math, finance, health, and date math. Each one includes a worked example, a comparison table, and a verdict.
Open →Timers
10 timers including Pomodoro, HIIT, cooking and study sprints. Pick a pattern, hit start, hear the chime.
Open →Converters
10 unit converters for length, weight, temperature and more. Includes an accuracy table and a side-by-side format comparison.
Open →Generators
10 generators for passwords, names, lorem ipsum, color palettes and UUIDs. Cryptographically secure where it matters.
Open →Checkers
10 checkers for word counts, grammar, links, and SEO. Instant feedback, no upload, all client-side.
Open →Pick a thread
Each topic below groups the tools people typically combine inside one workflow. Click any chip to jump in.
Break Timer
A short countdown (5/10/15 min) you can run between Pomodoro blocks and study sprints. Free browser tool, no signup.
Try the break timer →Our editorial promise
Every tool page is structured the same way: hero, interactive tool, comparison, fragmentary use cases, and a verdict block that takes at least 30% of the page. We never auto-generate filler — if a tool does not deserve a 1,500-word editorial, we do not publish it.