Roman Numeral Converter
Convert between Roman numerals and decimal numbers. Supports values from 1 to 3,999.
SHA-1 Hash Generator
Generate SHA-1 hash from text
SHA-256 Hash Generator
Generate SHA-256 hash from text
SHA-512 Hash Generator
Generate SHA-512 hash from text
SQL Formatter
Beautify and format SQL queries with proper indentation and uppercase keywords for improved readability.
SQL to Data Converter
Parse SQL INSERT statements and convert them to CSV, JSON, HTML table, or XML instantly.
SVG to PNG Converter
Paste SVG code or upload an SVG file, choose output size, and download a high-quality PNG. Fully client-side using Canvas.
Salary Calculator
Convert salary between annual, monthly, bi-weekly, weekly, and hourly rates.
Salary to Hourly Calculator
Convert between annual salary, monthly, weekly, and hourly pay rates.
Sales Tax Calculator
Calculate sales tax amount and total price including tax.
Savings Goal Calculator
Calculate how much to save per month to reach your financial goal.
Scientific Calculator
Advanced scientific calculator with 540+ functions: trigonometry, logarithms, matrices, complex numbers, equation solver, statistics, base-N conversion, and 47 scientific constants. Inspired by Casio fx-991CW.
Scientific Notation Calculator
Convert numbers to and from scientific notation. Also perform arithmetic on numbers in scientific notation.
Screen Resolution Detector
Instantly see your screen resolution, viewport size, device pixel ratio, color depth, orientation, touch support, and browser information. Updates live on resize.
Sentence Counter & Analyzer
Analyze sentence structure, get a Flesch-Kincaid readability score, and highlight overly long sentences.
Simple Interest Calculator
Calculate simple interest using the P×R×T/100 formula.
Slug Generator
Convert any text into a clean URL-friendly slug. Choose separator, case style, and max length. Supports batch conversion.
Snake_Case Converter
Convert text to snake_case
Sort Lines
Sort text lines alphabetically
Speed Converter
Convert between km/h, mph, m/s, knots
Square Root Calculator
Calculate square roots, cube roots, and any nth root of a number with high precision.
Standard Deviation Calculator
Calculate population and sample standard deviation, variance, and other statistics from a data set.
Stopwatch
A precise stopwatch with start, stop, reset, and lap functionality. Records and displays lap times in a sortable table.
TDEE Calculator
Calculate your Total Daily Energy Expenditure with detailed calorie breakdown.