Free calculation and simulation tools for work and everyday life
Calculate take-home pay from gross salary including health insurance, pension, employment insurance, income tax and resident tax
Calculate working days between two dates accounting for Japan and Vietnam public holidays. Supports multiple modes: weekends+holidays, banking, government, and more.
Create custom QR codes for URLs, Wi-Fi, contacts, email and more. Add a logo, colors and frames — free, unlimited, no sign-up required.
Create strong, random passwords in one click — generated safely inside your browser.
Convert images to JPG, PNG, WebP, AVIF or ICO right in your browser. Supports iPhone HEIC files, compression, resizing and batch downloads.
