SmartPlusLab
Tools
Online tools with clear inputs, predictable outputs, and honest privacy and limit notes.
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Calorie Calculator
Estimate your daily calorie needs and basal metabolic rate based on age, weight, height, gender, and physical activity level.
Math & Numbers -
Checksum Calculator
Calculate MD5, SHA-1, SHA-224, SHA-256, SHA-384, and SHA-512 cryptographic checksums from text strings with instant hexadecimal digests.
File Tools -
Circle Calculator
Calculate the radius, diameter, circumference, and area of a circle by entering any single known positive measurement.
Math & Numbers -
Color Blindness Simulator
Simulate how any hexadecimal color appears under multiple color vision deficiencies and in grayscale.
Color Tools -
Color Contrast Checker
Check the contrast ratio between foreground and background colors against readability thresholds.
Color Tools -
Color Converter
Convert color codes between HEX, RGB, and HSL formats with integer component values and a live visual preview.
Color Tools -
Random Color Generator
Generate random color codes in HEX, RGB, and HSL formats for web design and development.
Generators -
Color Harmonies Generator
Generate complementary, analogous, triadic, split-complementary, and tetradic color palettes from any hex color code.
Color Tools -
Color Mixer
Mix two colors together with an adjustable blending ratio to calculate interpolated, multiply, and screen color codes.
Color Tools -
Color Name Finder
Identify exact and nearest color names from hexadecimal color codes with RGB distance matching.
Color Tools -
Color Palette Generator
Generate harmonious color palettes with custom color harmony rules, base colors, and palette sizes.
Color Tools -
Color Picker
Validate hexadecimal color codes and convert them to HEX, RGB, or HSL representations with a brightness estimate.
Color Tools -
Color Shades Generator
Generate lighter tints and darker shades from any hex color with customizable step counts for web palettes and UI design.
Color Tools -
Compound Interest Calculator
Calculate investment balance growth with flexible compounding schedules and recurring deposit options.
Finance -
Compress Video
Compress video files to MP4 format with customizable quality and preset settings to reduce file size.
Video & Audio -
Countdown Timer
Calculate the exact snapshot duration in days, hours, minutes, and seconds until any upcoming target date and time.
Time & Date -
Credit Card Generator
Generate fake credit card numbers with optional expiration dates and security codes for software testing and form validation.
Generators -
Cron Expression Parser
Validate five-field cron expressions and calculate their next five scheduled execution times in UTC.
Time & Date -
CSS Animation Generator
Generate CSS keyframe animations and animation declarations with customizable timing, easing, direction, and fill mode properties.
Developer Tools -
CSS Border Radius Generator
Generate clean CSS border-radius declarations with custom corner values and units.
Developer Tools -
CSS Box Shadow Generator
Create custom CSS box-shadow declarations with adjustable horizontal and vertical offsets, blur, spread, color, and an optional inset effect. Preview and copy the code instantly.
Developer Tools -
CSS Clip Path Generator
Generate CSS clip-path snippets for circles, ellipses, and polygon shapes with customizable size and positioning.
Developer Tools -
CSS Color Names Reference
Search named CSS colors by name or hex code, view RGB values, and find the nearest named color match.
Developer Tools -
CSS Flexbox Generator
Generate CSS Flexbox layout code with configurable direction, alignment, justification, wrapping, and gap properties.
Developer Tools -
CSS Formatter
Format and beautify CSS code with configurable indentation or compact stylesheets into minified production code.
Developer Tools -
CSS Gradient Generator
Generate CSS linear and radial gradient code from custom directions and color stop lists.
Developer Tools -
CSS Grid Generator
Generate CSS Grid layout rules with customizable columns, rows, and pixel gaps.
Developer Tools -
CSS Specificity Calculator
Calculate CSS selector specificity components and weighted numerical scores to resolve style conflicts.
Developer Tools -
CSS Text Shadow Generator
Generate formatted CSS text-shadow rules with custom offsets, blur radius, and color.
Developer Tools -
CSS Triangle Generator
Generate pure CSS triangle code with custom directions and pixel dimensions using solid border styling.
Developer Tools