All Available Tools
Browse the tools currently available on KingToolsKit. We keep the collection focused on practical tools that work in the browser.
Featured
Popular tools
Jump straight to the tools users are most likely to need.
Currency Converter
Convert supported world currencies using regularly updated reference rates.
Business Break-Even
Calculate break-even units, revenue and target profit sales.
Profit Margin & Markup
Work out profit, margin, markup and target selling prices.
File Transfer Time
Estimate upload and download time from file size and connection speed.
Age Calculator
Calculate exact age in years, months, days, and even hours from birthdate.
Open tool âBarcode Generator
Create UPC, EAN, Code 128, Code 39 barcodes for products and inventory.
Open tool âBase64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to text instantly.
Open tool âBMI Calculator
Calculate Body Mass Index and get personalized health recommendations.
Open tool âBulk Barcode Generator
Mass generate product barcodes from CSV/Excel with sequential numbering.
Open tool âBulk QR Code Generator
Generate hundreds of QR codes at once using CSV/Excel upload.
Open tool âBusiness Break-Even Calculator
Calculate break-even sales, revenue and the units required to reach a target profit.
Open tool âColor Converter
Convert between HEX, RGB, HSL, CMYK color formats with live preview.
Open tool âFile Transfer Time Calculator
Estimate upload or download time from file size and connection speed.
Open tool âInvoice Generator
Create professional invoices instantly. Download as PDF or send via email.
Open tool âLoan EMI Calculator
Calculate monthly loan installments with amortization schedule.
Open tool âOnline Calculator
Simple but powerful calculator for basic and scientific calculations.
Open tool âPassword Generator
Generate strong, secure passwords with customizable options.
Open tool âPDF Converter
Convert Word to PDF, merge multiple PDFs, and edit PDF metadata.
Open tool âPercentage Calculator
Calculate percentages easily: find % of a number, percent change, and more.
Open tool âProfit Margin & Markup Calculator
Calculate gross profit, profit margin, markup and selling prices for target margins or markups.
Open tool âQR Code Generator
Generate QR codes for URLs, text, contacts, WiFi, and more. Free & instant download.
Open tool âQuotation Generator
Create professional price quotations for clients with itemized pricing.
Open tool âRandom Number Generator
Generate random numbers in any range. Get 1, 5, or 10 random numbers instantly.
Open tool âText Case Converter
Convert text to uppercase, lowercase, title case, sentence case, and more.
Open tool âTimestamp Converter
Convert Unix timestamps to human-readable dates and vice versa.
Open tool âUnit Converter
Convert length, weight, volume, area, temperature, speed, time, data, pressure, energy, power and frequency units, plus supported currencies.
Open tool âUUID/GUID Generator
Generate Version 4 UUIDs/GUIDs individually or in bulk.
Open tool âWord Counter
Count words, characters, sentences, and paragraphs in real-time.
Open tool âAbout these tools
Our tools are designed for common personal, educational and business tasks. Where a tool involves a formula or technical process, its individual page provides additional information to help you understand the result.