Local first
Processing happens on your device whenever technically possible.
PRIVATE TOOLS FOR EVERYDAY WORK
Useful tools.
Your inputs stay in your browser.
Free browser tools for writing, development, privacy, conversions, and everyday calculations.
Explore tools
FIND A TOOL
Find the right tool
Search the tool name or describe what you need to do.
Welcome
Tools designed for local processing handle your entries in this browser. The site still receives normal requests for pages and files; check each tool page for its exact limits.
THE TOOLBOX
What do you need to do?
Passwords & security8 free toolsDeveloper tools26 free toolsText & writing24 free toolsCryptography4 free toolsFiles4 free toolsPrivacy7 free toolsConverters8 free toolsCalculators11 free toolsVFR learning3 free tools
Tools to try
Passwords & securityFree Password GeneratorGenerate a random password in your browser, with a length and character groups you choose.Text & writingWord CounterCount words, sentence estimates, paragraphs, lines, and characters in pasted text.Developer toolsJSON FormatterFormat and inspect JSON in your browser without sending it to a server.ConvertersHEX to RGB ConverterConvert a 3-, 4-, 6-, or 8-digit CSS HEX color to RGB channels and ready-to-use CSS.CalculatorsPercentage CalculatorCalculate a percentage amount, find a part’s share of a total, or measure percentage change between two values.PrivacyImage Metadata CleanerCreate a still image copy without the original metadata. PNG stays PNG; other formats may be re-encoded.
OUR APPROACH
Why Off Cloud
by Design?
Useful tools should help you get things done without asking you to hand over private data.
Inputs stay in the browser
Tools designed for local processing handle entered values on your device. The site still receives ordinary page and asset requests.
Open and understandable
We explain how every tool works and what it does with your data.
Choosing a tool
Start with the task: security, development, cryptography, files, or privacy. Open the tool, enter only the values it needs, and check the result before using it.
Values entered in local tools are handled in your browser. No account is required. Opening a page still requests the code and assets needed to display it.
Suggest an idea · Request a toolSimple tools. More control.
Start with a free tool, no signup required.
New tools
Adult BMI calculatorCalculate an adult’s body mass index from height and weight, with general reference categories and clear limitations.Length, mass and volume converterConvert common length, mass and volume units, including miles, pounds and US liquid gallons.Fuel consumption calculatorCalculate fuel consumption in L/100 km and km/L, with an optional fuel-cost estimate.
New tools
Energy consumption calculatorCalculate electricity use in kWh from power and operating time, with an optional energy-cost estimate.Time duration calculatorCalculate the time between two clock times in hours and minutes, with an explicit next-day option.Rule of three calculatorFind a missing value in a direct proportion using three known numbers.