Useful tools without the fuss.
Everyday calculators, converters, image and PDF utilities, QR tools, text helpers and developer utilities. No waiting for an ad before your work gets done.
Popular
Useful right now
Percentage Calculator
Calculate X% of a value instantly.
Discount Calculator
Calculate sale price and savings from a discount.
Concrete Calculator
Estimate concrete volume with an optional waste allowance.
Length Converter
Convert common metric and imperial length units.
Image Compressor
Reduce JPEG/WebP image size locally in your browser or app.
Merge PDF
Combine multiple PDF files without uploading them.
QR Code Generator
Create a QR code for text or a URL locally.
Password Generator
Generate strong random passwords locally.
Calculators
Fast everyday and project calculations with no account required.
Percentage Calculator
Calculate X% of a value instantly.
Percentage Change
Find the percentage increase or decrease between two values.
Discount Calculator
Calculate sale price and savings from a discount.
Age Calculator
Calculate exact age from a date of birth.
Date Difference
Count days between two calendar dates.
Aspect Ratio Calculator
Find and scale width-to-height ratios.
Concrete Calculator
Estimate concrete volume with an optional waste allowance.
Paint Calculator
Estimate liters of paint from area, coats, and coverage.
Converters
Common metric, imperial, data, and speed conversions that work offline.
Length Converter
Convert common metric and imperial length units.
Weight Converter
Convert kilograms, grams, pounds, and ounces.
Area Converter
Convert square units, acres, and hectares.
Volume Converter
Convert liters, milliliters, gallons, cups, and cubic meters.
Speed Converter
Convert km/h, mph, m/s, knots, and ft/s.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin.
Data Size Converter
Convert bytes, KB, MB, GB, and TB.
Image Tools
Private image utilities that process files on your device.
PDF Tools
Lightweight PDF utilities that keep documents on your device.
QR Tools
Create useful QR codes locally for links and Wi-Fi.
Text Tools
Count, clean, inspect, and transform text locally.
Developer Tools
Small utilities for structured data, encoding, hashes, and identifiers.
JSON Formatter
Format and validate JSON locally.
Base64 Encode / Decode
Encode or decode UTF-8 text as Base64 locally.
URL Encode / Decode
Encode or decode URL components instantly.
Unix Timestamp Converter
Convert Unix seconds to human-readable date and time.
SHA-256 Generator
Generate a SHA-256 hash locally with Web Crypto.
UUID Generator
Generate random UUID v4 identifiers on your device.
Security Utilities