Simple tools for everyday tasks
Free Online Tools That Are Easy to Use
Calculate, convert, generate and work with everyday information directly in your browser. No registration is required.
Featured tools
Start with our most useful tools
Popular calculators and converters are available here without opening a category menu.
Currency Converter
Convert between supported world currencies using regularly updated reference rates.
Convert currencies âBusiness Break-Even Calculator
Find break-even sales volume, revenue and target-profit requirements.
Calculate break-even âProfit Margin & Markup
Calculate profit, margin, markup and selling prices from target percentages.
Calculate profit âFile Transfer Time Calculator
Estimate upload and download times for large files and different connection speeds.
Estimate transfer time âOur Available Tools
KingToolsKit currently provides a focused collection of practical tools. Each tool includes guidance and examples so you can understand the result, not just get a number.
Unit Converter
Convert distance, weight, temperature and volume.
Use this tool âAge Calculator
Calculate an exact calendar age from two dates.
Use this tool âPercentage Calculator
Work out percentages, changes, discounts and increases.
Use this tool âWord Counter
Count words, characters and sentences in text.
Use this tool âPassword Generator
Create strong random passwords with configurable options.
Use this tool âQR Code Generator
Create QR codes for URLs, text and other information.
Use this tool âRandom Number Generator
Generate random numbers within a chosen range.
Use this tool âText Case Converter
Convert text to uppercase, lowercase and other cases.
Use this tool âBase64 Encoder/Decoder
Encode or decode Base64 text in your browser.
Use this tool âBarcode Generator
Generate common barcode formats for practical use.
Use this tool âInvoice Generator
Prepare professional invoices for clients and customers.
Use this tool âClear explanations
Tool pages explain what the calculation or conversion means and provide practical examples.
Browser-friendly
Most tools are designed to work directly in your browser without creating an account.
Useful resources
Read our guides for practical explanations, examples and tips related to the tools.
Why KingToolsKit?
KingToolsKit was created to make common digital tasks quicker and easier. Instead of installing separate applications for simple calculations, conversions or generators, you can access the tools from one website.
We focus on practical tools, straightforward interfaces and useful explanations. We also publish guides that explain the concepts behind common calculations and digital tasks.
Learn more about KingToolsKit â