All Tools
Browse our complete collection of free online tools.
Aspect Ratio Calculator
DesignFind the ratio of any width/height and resize proportionally.
HEX to RGB Converter
DesignConvert HEX color codes to RGB, HSL, and CSS values.
Character Counter
WritingCount characters with/without spaces, words, sentences in real time.
Token Counter
AI/DevEstimate GPT-5.5 and Claude token usage and API costs.
Age Calculator
UtilityCalculate exact age from birthday in years, months, days.
Unix Timestamp Converter
DevConvert Unix epoch timestamps to human-readable dates.
Roman Numeral Converter
MathConvert numbers to Roman numerals and back (1–3999).
Days Between Dates
UtilityCount days, weeks, months, and workdays between dates.
Percentage Calculator
MathCalculate percentage increase or decrease between values.
Markdown to HTML
DevConvert Markdown to clean HTML with live preview.
CSV to JSON
DevTransform CSV spreadsheet data into JSON format.
Tip Calculator
FinanceCalculate tips and split bills with custom percentages.
Tax Calculator 2026
FinanceEstimate federal and state income taxes for 2026.
Car Shipping Cost Calculator
FinanceEstimate auto transport costs by distance, vehicle, and route.
Finals Grade Calculator
EducationCalculate what score you need on your final exam.
Cron Schedule Generator
DevBuild cron expressions visually with natural language input.
Code Formatter Online
DevFormat JSON, HTML, CSS, SQL, and more instantly.
HTML Formatter Online
DevBeautify, minify, and validate HTML code instantly.
CSS Formatter Online
DevBeautify, minify, and validate CSS stylesheets instantly.
YAML Formatter Online
DevFormat, validate, and convert YAML to JSON.
JSON Formatter & Validator
DevBeautify, validate, minify, and fix JSON with error line detection.
Instagram Caption Formatter
SocialFormat captions with line breaks, spacing, and hashtag counts.
CPRS Lab Formatter
MedicalFormat VA CPRS lab results into fishbone diagrams and tables.
XML Parser Online
DevParse, format, validate, minify and convert XML instantly.
UUID Generator
DevGenerate single or bulk UUID v4 instantly. Copy, download, validate.
Base64 Encoder & Decoder
DevEncode text to Base64 or decode Base64 back to text instantly.