Free Online Tools for Developers and Electronics Projects
Free Online Age Calculator
Calculate age online for free by birth date and target date. Get exact age in years, months, days, total months, and total days instantly.
Try ItFree Online Battery Life Calculator for Runtime Estimates
Estimate battery runtime online for free using battery capacity, load current, and efficiency. Great for electronics projects and portable devices.
Try ItFree Online BMI Calculator
Calculate BMI online for free using metric or imperial units. Enter height and weight to get your body mass index and standard BMI category instantly.
Try ItFree Online CSS Minifier and CSS Compressor
Minify CSS online for free. Remove comments, spaces, and unnecessary characters to reduce file size, improve load speed, and clean your stylesheet instantly.
Try ItFree Online Discount Calculator
Calculate discounts online for free. Enter original price and discount percent to find final sale price and total savings instantly.
Try ItFree Online JPG to WebP Converter
Convert JPG to WebP online for free. Reduce image file size, keep good visual quality, and download optimized WebP images directly in your browser.
Try ItFree Online LED Resistor Calculator for LED Circuits
Use this free LED resistor calculator online to find the correct resistor value and power rating for your LED circuit and avoid burnout.
Try ItFree Online Ohm’s Law Calculator with Unit Conversion
Calculate voltage, current, resistance, and power with this free Ohm’s law calculator online. Enter any two values and solve the rest instantly.
Try ItFree Online Percentage Calculator
Calculate percentages online for free. Find percent of a number, reverse percentages, and percentage change quickly in your browser.
Try It