Tools Collections
Discover our carefully curated collections of tools, organized by use case and purpose to help you find exactly what you need.
Best Free Online Calculators
A curated collection of our most-used calculators for everyday math, finance, and health. Calculate age, BMI, loans, mortgages, savings, discounts, salary after tax, date differences, calories, and percentages — instantly in your browser with no sign-up.
Productivity Tools Collection
A hand-picked set of tools to help you stay focused and move faster: Pomodoro sessions, timers, alarm clock, writing counters, and quick generators like QR codes, lorem ipsum, passwords, and random numbers — all in your browser.
Essential Tools for Students
A focused toolkit for school and university: calculate GPA and grades, solve equations, practice typing speed, generate citations, convert percentages to GPA, and handle averages — all designed to save time on coursework.
File Converter Tools
Convert files and data formats quickly: JSON⇄CSV, JSON⇄XML, CSV⇄Excel (XLSX), Base64 encoding/decoding, image compression and resizing, Text to PDF, URL encoding/decoding, plus unit and currency conversion — processed in your browser.
Health & Fitness Tools
Health and fitness calculators for quick estimates: BMI, calorie needs, pregnancy timing, age, and more. Designed for fast checks and planning — calculations run in your browser and don’t require an account.
Developer Tools Collection
A practical set of developer utilities for everyday work: hashes (MD5), UUIDs, Base64, minifying HTML/CSS/JS, JSON conversions, URL encoding, password checks, text utilities, lorem ipsum, and color picking — fast in your browser.
Why Use Our Collections?
Organized
Tools grouped by purpose and use case for easy discovery
Curated
Best tools hand-picked for each collection
Quick Access
Find the right tool faster with themed collections