Free Online Tools That Work

Free online calculators for math, finance, health, dates, and more.

Developer utilities for formatting, encoding, regex, hashing, and more.

Convert units, currencies, file formats, and data types instantly.

Tools for word count, case conversion, text comparison, and editing.

Animated random generators: 3D coin flipper, dice roller, spinner, and decision makers.

Calculators for algebra, geometry, equations, and advanced mathematics.

Calculate BMI, BMR, daily calories, macro ratios, and track fitness metrics.

Hash generators, Base64 encoder/decoder, URL encoder/decoder, and secure password makers.

Convert, compress, resize, and edit images directly in your browser.

Calculate age, duration between dates, timezone conversions, and stopwatches.

Generate CSS box-shadows, gradients, border-radius, and layout code visually.

Lookup IP addresses, ping domains, check ports, and parse user-agent strings.

Calculate profit margins, VAT/sales tax, markups, and unit-price comparisons.

Convert files and data structures between JSON, CSV, XML, and YAML.

Generate and scan custom QR codes and barcode formats instantly.

Generate slugs, build UTM campaign parameters, and check word density.

Convert between Binary, Octal, Decimal, Hexadecimal, and Roman numerals.

GPA calculators, scientific notation converters, and study aids.

Tone generators, sound pitch testers, decibel meters, and audio trimmers.

Check your screen resolution, battery status, user-agent, and device capabilities.