Utility Calculators Precision Tools
Free utility calculators: age calculator, date difference, percentage, random number generator, tip calculator & everyday math tools. Instant results.
Image to WebP Converter: Resize and Compare File Size
Convert a JPEG, PNG or WebP image to WebP in your browser, with quality, maximum dimensions and a before/after size comparison.
Random Number Generator: Inclusive Range and Unique Draws
Generate one or many integers with inclusive bounds, optional no-repeat sampling and browser cryptographic randomness.
Password Generator: Secure Browser Randomness
Generate a random password with your chosen length and character groups. Copy it directly into your password manager.
QR Code Generator: Text, URLs and Wi-Fi
Create a static QR code in your browser for text, a URL or Wi-Fi details. Download a PNG with a four-module quiet zone.
Download Time Calculator
Calculate exactly how long it will take to download or upload a file. Automatically converts between Megabits (Mbps) and Megabytes (MB).
Battery Life Calculator: Current or Power Load
Estimate battery runtime using mAh and mA at the same voltage, or convert nominal battery energy into runtime for a load in watts.
Appliance Electricity Cost Calculator
Calculate daily, monthly and annual electricity costs for several appliances. Include standby power, quantities and a comparison electricity tariff.