Math, finance, health, TV & video, PDF tools, date & time, unit conversions, and web tools — all free, no signup required
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Calculations run in your browser. No server calls, no waiting.
20 categories with 217 calculators and tools
Algebra, geometry, statistics, fractions, and more
Loans, mortgage, debt payoff, compound interest, ROI, taxes
BMI, calories, body fat, protein, sleep cycles
Viewing distance, screen dimensions, projector setup, mount height, and reference charts
Split PDFs, convert to JPG/PNG, add watermarks
Password gen, URL encoder, hash generator, JSON formatter, base64, color converter, base converter
Sort, clean, transform, and analyze text quickly in your browser
Age, date differences, workdays, time zones, and countdowns
Length, weight, temperature, volume, speed, area, energy, pressure, data storage
Recipe scaling, temperature conversion, ingredient units, cooking ratios
Concrete, square footage, bricks, gravel, roofing, stairs, paint, lumber
Resize images, convert WebP, JPG, PNG, AVIF — batch up to 50, all in-browser
Physics and chemistry — Ohm's law, kinetic energy, projectile motion, molar mass, molarity, half-life
Pirate, Yoda, Gen Z, Morse, NATO Phonetic, Binary/Hex, Pig Latin, Leet Speak, British↔American, and more
Convert photos to pixel art, color printable pages online — creative tools that run entirely in your browser
Preview OTF, TTF, WOFF, and WOFF2 fonts — type tester, character map, font converter, glyph inspector, and more, all in your browser
Paint, tile, flooring, wallpaper, concrete, mulch, and fence calculators for home improvement projects
HTML/CSS/JS editor with live preview, CSS & JS minifiers, regex tester with live highlighting
Free premium Blogger XML themes — dark mode, magazine grid, editorial layouts. Download and install in under a minute
Generate custom printable lined paper — adjust spacing, margins, colors, and download as PDF or PNG
Perform basic calculations instantly
Frequently used tools across all categories
Calculate percentages, increase, decrease
Monthly payments and total interest
Body Mass Index and health metrics
Find recommended seating distance for 4K and 1080p content
Get exact width & height from diagonal size and aspect ratio
Project investment growth over time
Generate strong, random passwords
Convert between measurement units