Download videos from YouTube, TikTok, Instagram, X/Twitter, Threads, Facebook, Snapchat, Pinterest, LinkedIn — in MP4 with multiple format options.

Convert tracks from Spotify, Soundcloud, Bandcamp, Tidal, Deezer, Castbox, Apple Music, and YouTube to MP3.

International clothing & footwear size conversion tables for women, men, children, lingerie, socks, and rings.

Convert integers between binary, base-4, octal, decimal, hexadecimal, and base-32 instantly.

Generate cryptographically secure random passwords. Configure length, character types, and exclusions to fit any policy.

Calculate compound interest on investments with optional taxes and inflation adjustments. Supports initial principal and recurring contributions.

Calculate body mass index (BMI) and see how it relates to the clinical weight ranges used in anorexia screening, with references and support information. Category: Health & Reference

Calculate IPv4 and IPv6 subnets: network and broadcast addresses, usable host ranges, masks, CIDR, and IP class. Category: Developer Tools

Convert data units, estimate download/upload times, size website bandwidth, and convert hosting bandwidth. Category: Developer Tools

Add, subtract, multiply, and divide binary numbers, and convert between binary and decimal in both directions. Category: Developer Tools

Scan text for prohibited or offensive words and mask flagged terms with a custom character. Category: Text Tools

Convert PDF files into editable Word (DOCX) documents right in your browser - no upload, no install. Category: File Tools

Estimate daily Calories to maintain, lose, or gain weight using the Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle equations, plus activity levels, zigzag cycling, and reference tables. Category: Health & Reference

Estimate monthly car payments and total loan cost, accounting for sales tax, fees, trade-in value, cash incentives, and your down payment. Includes a reverse Monthly Payment mode and a yearly amortization schedule. Category: Calculators

Compare an auto manufacturer's cash rebate against a low-interest financing offer to see which saves more, with monthly payment, total interest, and total cost for each, plus U.S. state sales-tax handling. Category: Calculators

Estimate the monthly mortgage payment and total cost of homeownership, with taxes, insurance, PMI, HOA fees, and extra payments, plus interactive payment-breakdown and amortization charts. Category: Calculators

An all-in-one AI background remover and generator that removes backgrounds and isolates subjects from images with impressive precision, processed privately in your browser. Category: Image Tools

Detect AI-generated text from models like ChatGPT, GPT-4, Claude, Gemini, and Llama using a seven-component analysis, and gauge writing quality, all processed privately in your browser. Category: Text Tools

Enter any birth or event date to see your exact age in years, months, and days; totals in weeks, hours, and seconds; the weekday you were born; a countdown to your next birthday; and the dates of special milestones such as your 10,000th day. Category: Time & Date

Measure the as-the-crow-flies distance between any two cities or coordinates in kilometers, miles, and nautical miles, with the initial compass heading, the local time at each end, and a world-map view of the route — all computed privately in your browser. Category: Calculators