Utility Pages
All ToolsFree online calculators
that don't suck.
Fast, mobile-first, ad-light tools for fitness, finance, education, and more. Built for people who hate slow sites with 10 popups.
Health
TDEE Calculator
liveTotal Daily Energy Expenditure with macros
BMI Calculator
liveBody Mass Index, healthy range, ideal weight
Calorie Calculator
liveDaily calorie needs by goal
Macro Calculator
liveProtein, carbs, and fat targets
Sleep Cycle Calculator
liveWake refreshed — best bedtimes by 90-min cycles
Pregnancy Due Date Calculator
liveLMP, conception, or ultrasound — current week + trimester
Body Fat Percentage Calculator
liveUS Navy tape method + BMI-based, fat/lean mass
Water Intake Calculator
liveDaily hydration target by weight, activity, climate
BAC Calculator
liveBlood alcohol estimate (educational, never drive after drinking)
Pace Calculator
liveRunning pace + 5K/10K/marathon splits
Heart Rate Zone Calculator
live5 training zones from HRmax (Tanaka, Karvonen)
Ovulation Calculator
liveFertile window, ovulation date, next 3 cycles
Ideal Weight Calculator
liveDevine, Robinson, Miller, Hamwi + BMI range
Finance
Compound Interest
liveInvestment growth with monthly contributions
Auto Loan Calculator
liveCar payment with US state sales tax + amortization
Paycheck Calculator
liveTake-home pay, all 50 states + DC, 2026 brackets
Crypto Tax Calculator
liveUS capital gains, short-term + long-term, 2026
Mortgage Calculator
liveConventional / FHA / VA with PMI + tax + insurance + PMI drop
Tip Calculator
liveTip + bill split + round-up, with quick presets
Salary Calculator
liveHourly ↔ annual ↔ monthly conversion, custom hours/weeks
Loan Calculator
livePersonal/student/business loan with amortization + extra payments
Income Tax Calculator
live2026 federal + FICA, all 4 filing statuses, bracket breakdown
Sales Tax Calculator
liveAll 50 US states, forward + reverse calculation
Investment Calculator
liveFuture value with contributions + inflation adjustment
401(k) Calculator
liveRetirement projection with employer match + salary growth
Inflation Calculator
livePast purchasing power + future value erosion
ROI Calculator
liveTotal ROI + CAGR + benchmark comparison
Net Worth Calculator
liveAssets minus liabilities with category breakdown
Down Payment Calculator
liveDown payment + loan amount + monthly P&I + PMI
Roth IRA Calculator
liveTax-free retirement projection vs traditional
Stock Profit Calculator
liveBuy/sell with commissions + short vs long-term tax
Writing
Word Counter
liveWords, characters, reading time, keyword density
Character Counter
liveTwitter/X, Instagram, meta description, SMS
Title Case Converter
liveAPA, Chicago, AP styles + UPPER/lower/alternating
Number to Words Converter
liveFor checks, contracts, legal documents
Text Manipulation Tool
liveReverse, sort, dedupe, trim, shuffle lines
Word Games
Random / Decisions
Developer Tools
Password Generator
liveStrong, cryptographically random — with strength meter
UUID Generator
livev4 (random) or v7 (timestamp-ordered) — bulk export
Lorem Ipsum Generator
liveClassic, bacon, hipster, geek themes
JSON Formatter & Validator
livePretty-print, minify, sort keys, error line/column
Base64 Encoder/Decoder
liveStandard + URL-safe variant
URL Encoder/Decoder
liveComponent or full-URL percent-encoding
Hash Generator
liveSHA-256, SHA-384, SHA-512, SHA-1, MD5
Regex Tester
liveLive highlighting, capture groups, all flags, replace mode
JWT Decoder
liveHeader, payload, claims with timestamp parsing
AI Token Counter
liveGPT, Claude, Gemini cost estimator
Diff Checker
liveSide-by-side or unified text diff
Markdown to HTML
liveLive preview, GFM, copy clean HTML
URL Slug Generator
liveClean SEO slugs from any title
Px to REM Converter
liveCSS unit converter with Tailwind reference table
CSV to JSON Converter
liveBidirectional CSV ↔ JSON, browser-only
Cron Expression Builder
liveVisual builder + plain English + presets
HTML Entity Encoder/Decoder
liveNamed + numeric entities + reference table
Design Tools
HEX to RGB Converter
liveHEX ↔ RGB ↔ HSL with WCAG contrast
Color Palette Generator
live5 schemes, export as Tailwind / CSS / JSON
Favicon Generator
livePNG sizes 16/32/48/192/512 from initials
QR Code Generator
liveURLs, WiFi, vCard, custom colors, PNG + SVG download
Image Compressor
liveUp to 80% smaller — browser-only, drag and drop
CSS Gradient Generator
liveLinear, radial, conic — copy CSS or Tailwind class
CSS Box Shadow Generator
liveMulti-layer shadows with live preview + presets
Image Format Converter
livePNG ↔ JPG ↔ WebP ↔ AVIF — browser-only, batch
Image Resizer
liveResize by pixels or %, social presets, batch
CSS Flexbox Generator
liveVisual builder + live preview + CSS/Tailwind
Productivity
Time & Date
Math
Percentage Calculator
live% of, X is what % of Y, % change — three modes
Unit Converter
liveLength, weight, temperature, volume, area, speed
Roman Numeral Converter
liveConvert numbers ↔ Roman numerals (1–3,999)
Statistics Calculator
liveMean, median, mode, SD, variance, quartiles, IQR
Fraction Calculator
liveAdd/subtract/multiply/divide with mixed numbers
Volume Calculator
liveCube/box/cylinder/sphere/cone/pyramid
Triangle Calculator
livePythagorean, SSS, SAS — sides, angles, area
Shopping & Retail
Construction & Home
Concrete Calculator
liveCubic yards for slabs, footings, columns, stairs
Square Footage Calculator
liveArea for any shape — rectangle, triangle, circle, trapezoid
Paint Calculator
liveGallons + cost for a room with doors, windows, coats
Tile Calculator
liveTiles needed by area + waste factor + boxes
Mulch Calculator
liveCubic yards by area × depth + bags needed
Roof Pitch Calculator
liveX/12 pitch ↔ angle ↔ slope % + rafter length
Drywall Calculator
liveSheets, joint compound, screws, cost