🔧
Category
Utilities
17 calculators
🧮About UsLearn about WebCalcSys — our mission, features, and the team behind the calculator ecosystem.
🧮Contact UsGet in touch with the WebCalcSys team. Send us your questions, feedback, or suggestions about our free online calculator ecosystem.
🧮Base64 Encoder & DecoderFree online Base64 encoder and decoder. Instantly convert plain text to Base64 or decode Base64 back to readable text with real-time conversion.
🧮Color ConverterFree online color converter. Convert colors between HEX, RGB, and HSL formats instantly with live color preview swatch and complementary color suggestions.
🧮JSON Formatter & ValidatorFree online JSON formatter, validator, and beautifier. Format, minify, and validate JSON data instantly.
🧮Regex TesterFree online regex tester. Test regular expression patterns in real-time with highlighted matches, capture group details, and support for global, case-insensitive, and multiline flags.
🧮UUID GeneratorFree online UUID v4 generator. Generate cryptographically secure UUIDs using crypto.randomUUID(). Copy individual UUIDs or bulk copy all with one click.
🧮Capacitor Charge Calculator — ElectronicsCalculate RC time constant, charge time, and voltage for capacitor circuits. Free online electronics calculator.
🧮LED Resistor Calculator — ElectronicsCalculate the current-limiting resistor value and power dissipation for LEDs. Free online electronics calculator.
🧮Air Fryer ConverterConvert conventional oven temperatures and cooking times to air fryer settings. Apply the universal -25°F and -20% time reduction rule instantly.
🧮Recipe Scaler — WebCalcSysScale your recipe ingredients to any number of servings. Free online recipe scaler tool.
🧮Sourdough Baker's CalculatorCalculate the exact water and salt weights for your sourdough using baker's percentages. Adjust hydration from 60-85% and salt from 1.5-3%.
🧮Earthquake Energy (TNT Equivalent) Calculator — GeologyConvert Richter magnitude (M) to energy in Joules and equivalent tons of TNT explosives. Free online geology calculator.
🧮Rock & Mineral Density Calculator — GeologyCalculate rock and mineral density with water displacement method. Compare against reference table. Free online geology calculator.
🧮Privacy PolicyWebCalcSys Privacy Policy — how we collect, use, and protect your information.
🧮Running Pace Calculator — WebCalcSysCalculate your running pace, speed, distance, and predicted race times. Free online running calculator.
🧮Terms of ServiceWebCalcSys Terms of Service — rules and guidelines for using our calculator platform.