zzml.com brings together a growing family of free websites: developer tools, unit converters, everyday calculators, and practical reference guides. Everything runs privately in your browser, works on any device, and never asks for an account.
Every site in the network is self-contained, fast, and focused on one job. Start anywhere.
JSON formatter, Unix timestamp converter, QR code generator, secure password generator, color converter, and text counter — all running locally in your browser.
tool.zzml.com · 6 tools Open developer tools →Centimeters to inches, kg to lbs, Celsius to Fahrenheit, cups to grams, shoe sizes, fuel volumes and more — with reference charts and manual math on every page.
converters.zzml.com · 20+ converters Open converters →Loan payments, restaurant tips, BMI, age, percentages, time duration, fuel cost, savings, GPA, recipe scaling, and speed — instant answers as you type.
calc.zzml.com · 11 calculators Open calculators →Timeless reference knowledge: unit conversions, world time zones, food storage safety, home safety checklists, health basics, and plain-language glossaries.
facts.zzml.com · 7 topics Open reference library →Cleaning tricks, stain removal, laundry symbols, organization, small-space living, plant care, moving checklists, and seasonal prep — practical advice you can use today.
homehacks.zzml.com · 20 guides Open home guides →Quick links to the most-used tools across the network.
Evergreen content from across the network, written to stay useful for years.
A curated list of privacy-first browser tools for formatting, converting, and generating.
CookingCups, grams, ounces, tablespoons, and oven temperatures — explained with charts.
HomeSmoke alarms, trip hazards, seasonal checks — a room-by-room walkthrough.
Every tool runs in your browser. Your data never leaves your device, and nothing is uploaded anywhere.
No premium tiers, no feature locks, no registration. Supported only by simple, non-intrusive ads.
Pure static HTML with no server round-trips. Pages load instantly on any connection.
Fully responsive on phones, tablets, and desktops, with touch-friendly controls.
Yes. Every tool, converter, calculator and guide across the network is completely free. There are no premium versions, no paywalls, and no feature restrictions. The sites are supported by minimal advertising.
No. All tools and calculators run entirely in your browser using JavaScript. Data you enter never leaves your device, so there is nothing for anyone to collect.
The network includes tool.zzml.com (developer tools), converters.zzml.com (unit converters), calc.zzml.com (everyday calculators), facts.zzml.com (reference library), and homehacks.zzml.com (household guides). All are reachable from this homepage.
No account is needed anywhere on the network. Just open a page and start using the tool immediately.
Absolutely. Every tool and reference page has its own permanent URL, so you can bookmark it or share a direct link with friends, family, or colleagues.