Utility Tools

Generate random UUIDs (v4)

Generate strong random passwords

Generate SHA-256, SHA-1 and SHA-512 hashes

Convert between HEX, RGB and HSL

Convert Unix timestamps to dates and back

Convert Markdown to HTML with live preview

Generate QR codes from any text or URL

Compare two texts and see differences

Decode and inspect JSON Web Tokens

Test regular expressions with live matching

Format and beautify SQL queries

Parse and explain cron expressions

Convert between units of length, weight, temperature and more

Calculate percentages, increases and decreases

Calculate exact age from a birth date

Generate TypeScript interfaces from JSON

Calculate Unix file permissions

Convert between CSS px and rem units

Create CSS linear and radial gradients

Create CSS box shadows with a visual editor

Calculate Body Mass Index

Calculate monthly payments and total interest

Calculate tips and split bills

Calculate days between two dates

Calculate and convert aspect ratios

Focus timer with work and break intervals

Online stopwatch with lap times

Quick notes saved in your browser

Set a timer and count down to zero

Compare two JSON objects and see differences

Format and validate YAML

Break down a URL into its components

Generate HTML meta tags for SEO

Generate robots.txt files for your website

Generate harmonious color palettes

Generate random colors with codes

Generate random numbers in a range

Detect your screen and viewport size

Browse and copy special characters

Format and validate IBAN numbers

Calculate business days between dates

Add or subtract days from a date

Convert time between time zones

Calculate profit margin and markup

Calculate sale price after discount

Simplify and reduce fractions

Pick random names from a list

Get a random yes or no answer

Generate Apache .htaccess rules

Calculate Stripe processing fees

Calculate PayPal processing fees

Calculate Etsy seller fees

Calculate Fiverr service fees

Calculate Upwork freelancer fees

Calculate Depop seller fees

Calculate Poshmark seller fees

Download YouTube video thumbnails in HD

Create wa.me links with pre-filled messages

Calculate total work hours from start and end times

Convert salary to hourly rate and back

Calculate eBay seller fees

Calculate total Copart auction fees for buyers

Calculate Amazon FBA profit after referral and fulfillment fees

Calculate Venmo business account transaction fees

Calculate Cash App credit card and instant deposit fees

Calculate Vinted buyer protection fee on purchases

Calculate Shopify Payments processing fees by plan

Calculate Square transaction fees by payment type

Calculate Patreon creator earnings after platform and payment fees

Calculate Airbnb host payout after service fees

Calculate Coinbase crypto purchase fees for Simple and Advanced Trade

Calculate your net payout from selling tickets on Ticketmaster

Calculate how much of each donation actually reaches your GoFundMe

Calculate your StockX payout after transaction and processing fees

Calculate Booking.com host commission and net payout

Calculate Twitch subscription revenue after platform split

Calculate Gumroad creator earnings after platform and processing fees

Calculate OnlyFans creator earnings after the 20% platform fee

Calculate Substack newsletter earnings after platform and Stripe fees

Calculate total buyer cost including Mercari payment processing fee

Calculate Grailed seller payout after platform and payment fees

Calculate Eventbrite organizer revenue after service and processing fees

Calculate Wise international transfer fees with mid-market rates

Calculate Buy Me a Coffee creator earnings after platform and Stripe fees

Calculate Kindle eBook and paperback royalties on Amazon KDP

Calculate Klarna payment processing costs for merchants

Calculate restaurant revenue after Uber Eats commission

Calculate Western Union transfer fees including exchange rate markup

Calculate Payoneer withdrawal fees to bank accounts

Calculate Facebook Marketplace selling fees for shipped items

Calculate SumUp transaction fees by payment method

Calculate Vrbo host payout under pay-per-booking or annual subscription

Calculate creator revenue from YouTube Super Chats after platform cut

Calculate TikTok Shop seller profit after referral and transaction fees

Calculate Turo host earnings by protection plan

Calculate Redbubble artist earnings from base price and markup

Calculate Reverb net payout after selling fee and payment processing

Calculate StubHub seller payout after service fee

Calculate SeatGeek seller payout after the 10% seller fee

Calculate Walmart Marketplace referral fees by product category

Calculate restaurant revenue after DoorDash commission by plan

Calculate net funds raised after Kickstarter platform and payment fees

Calculate net funds from Indiegogo after platform and processing fees

Calculate Teachable course earnings by plan after platform and Stripe fees

Calculate Rover sitter earnings after 20% service fee

Calculate Freelancer.com earnings after platform fees

Calculate Braintree payment processing fees for cards and PayPal

Calculate Society6 artist royalty on products

Calculate Binance spot trading fees with and without BNB discount

Calculate OpenSea NFT seller earnings after platform fee and gas costs

Calculate Udemy instructor revenue by traffic source

Calculate restaurant revenue after Deliveroo commission

Calculate print-on-demand profit after production cost and platform fees

Calculate USPS DIM weight and find your billable shipping weight

Calculate FedEx and UPS holiday surcharges on top of your base shipping rate

Estimate monthly Amazon FBA inventory storage costs including Q4 rates

Calculate your IRS mileage tax deduction as an Uber or Lyft driver

Calculate how much tax to save from your OnlyFans earnings each month

Find your real hourly rate after mileage costs and self-employment tax

Compare W2 employment vs 1099 contract to find your equivalent freelance rate

Calculate the total financial cost of a Stripe dispute or chargeback

Calculate developer earnings after Apple or Google's platform revenue cut

Calculate AWS outbound data transfer costs — the main driver of surprise cloud bills

Reveal the hidden PayPal exchange rate markup and see what you actually receive

Calculate your net earnings after eBay fees plus Promoted Listings Standard ad spend

Calculate the cost of offering BNPL payment options to your customers

Calculate Chapter 3 tax withholding on YouTube AdSense earnings for non-US creators

Find the right cleaning fee to charge guests so you don't lose money after Airbnb's cut

Calculate total Twilio SMS costs including A2P 10DLC carrier surcharges

Calculate your minimum billable hourly rate accounting for taxes and unbillable hours

Calculate your wholesale assignment fee profit from real estate wholesale deals

Calculate platform costs for Stripe Connect Express vs Custom accounts

Calculate developer earnings after Shopify's app store revenue share