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Online Tools Collection - GrockTool
Browse and discover 150+ free online tools for developers, designers, students, and creators. GrockTool offers a comprehensive collection of utilities for various needs.
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Discover 150+ tools organized by category. Find exactly what you need, when you need it.
Showing 48 of 48 tools
Convert between different units of length (meters, feet, inches, etc.)
Convert between different units of weight (kg, lbs, grams, etc.)
Convert between Celsius, Fahrenheit, and Kelvin
Convert between different time units (hours, minutes, seconds)
Convert between different speed units (mph, km/h, m/s)
Convert between different area units (sq ft, sq m, acres)
Convert between different volume units (liters, gallons, cups)
Convert between bytes, KB, MB, GB, TB
Count words, characters, sentences, and paragraphs in your text
Remove duplicate lines or words from your text
Convert text to uppercase, lowercase, title case, or sentence case
Sort lines of text alphabetically or numerically
Reverse text, words, or lines in your content
Generate URL-friendly slugs from your text
Find and replace text patterns in your content
Check if text reads the same forwards and backwards
Remove or filter special characters from text
Limit text to a specific number of characters or words
Calculate exact age in years, months, and days
Calculate the difference between two dates
Create countdown timers for events and deadlines
Calculate working days between two dates
Count days until your next birthday
Check if a year is a leap year
Find the week number for any date
Calculate percentages, percentage increase/decrease
Calculate simple and compound interest
Convert numbers to and from scientific notation
Generate random numbers within specified ranges
Scientific calculator with advanced functions
Check if a number is prime and find prime factors
Calculate factorial of any number
Generate multiplication tables for any number
Solve quadratic equations and find roots
Calculate percentage change between values
Calculate area and perimeter of triangles
Calculate area and circumference of circles
Calculate logarithms and exponentials
Calculate mean, median, mode, and standard deviation
Calculate your Body Mass Index and health category
Calculate daily calorie needs based on activity level
Calculate your daily water intake requirements
Calculate body fat percentage using various methods
Calculate your ideal weight based on height and age
Calculate Basal Metabolic Rate and daily energy expenditure
Calculate optimal macronutrient distribution
Create custom QR codes for URLs, text, phone numbers, and WiFi information
Generate barcodes in EAN, UPC, Code128, ISBN and other formats