Tools Hub
Discover fast, private, and free browser tools across gaming, development, construction, finance, productivity, and lifestyle workflows.
Category Directory
Free Gaming Tools & Calculators
A collection of free tools for gamers to calculate DPI, sensitivity, screen resolution, and more.
Online Developer Tools & Utilities
Free online utilities for developers, including JSON formatters, text tools, and testing utilities.
Construction & Handyman Calculators
Calculators for construction, painting, flooring, and tiling materials.
Math & Science Tools
Fast browser tools for formulas, conversions, and scientific helpers.
Web Utilities
SEO and website diagnostics tools for metadata, previews, and performance checks.
Productivity Tools
Focus timers, work session helpers, and text workflow tools for daily execution.
Finance Calculators
Private browser finance tools for investment growth, loan planning, and take-home pay.
Lifestyle & Health Tools
Health and daily-life calculators for fitness, sleep planning, and personal benchmarks.
All Tools
Mouse DPI & Sensitivity Calculator
Find your true eDPI and convert sensitivity seamlessly between your favorite games.
Tile Calculator
Quickly estimate tile requirements for your renovation.
Wallpaper Calculator
Quickly estimate wallpaper requirements for your home.
Paint Calculator
Quickly estimate paint requirements for your home.
Keyboard Tester
Free online Keyboard Tester. Check if your keys are working, test for ghosting, and view key codes. Works on Mac & Windows.
Typing Speed Test
Run a free typing speed test with time, words, and quote modes. Track net WPM, raw WPM, CPM, error rate, history trends, and challenge links.
Reaction Time Test
Run a gamer-focused reaction time test with Classic, Focus, Distraction, and Stamina modes. Track percentile, consistency, integrity flags, and challenge links.
JSON Formatter & Validator
Instantly format, validate, and minify your JSON data.
What is my Screen Resolution?
Instantly detect your screen and browser dimensions.
Pro Player Settings Comparison Tool
Compare manual profiles or pro presets with game-specific eDPI benchmark ranges.
Aim Sensitivity Visualizer
Visualize effective sensitivity, eDPI, and cm/360 with game-aware benchmark ranges.
FPS Calculator & Hardware Performance Estimator
Estimate expected FPS from your CPU, GPU, game profile, resolution, and graphics settings.
Mouse Polling Rate Test & Checker
Compare 1000, 2000, 4000, and 8000 Hz behavior and plan a stable setup.
Regex Testing Tool
Test regular expressions live against sample text with instant match output.
Base64 + Hashing Tool
Encode/decode Base64 and generate SHA-256 hashes in your browser.
Markdown Preview Tool
Preview Markdown output instantly while you write.
Code Snippet Formatting Tool
Normalize indentation and clean pasted code snippets quickly.
SEO Meta Tag Generator
Generate title, description, canonical, and Open Graph tags.
Open Graph Preview Tool
Preview how links can appear on social feeds before publishing.
Website Performance Simulator
Estimate an overall performance score from core web metrics.
Text Transformation Tool
Convert text between uppercase, lowercase, title, snake_case, and camelCase.
Focus Timer Planner
Plan focused work cycles and break structure in seconds.
Work Session Utility Planner
Break a work block into realistic focus sessions and breaks.
Compound Interest Calculator
Model long-term growth with contributions and compounding.
Loan Amortization Calculator
Estimate monthly payments, total repayment, and total interest.
Salary After Tax Estimator
Estimate annual and monthly net salary from gross pay assumptions.
BMI Calculator
Calculate body mass index from height and weight instantly.
Calorie Burn Estimator
Estimate calorie expenditure from MET, body weight, and duration.
Sleep Cycle Calculator
Calculate recommended bedtime based on wake-up time and sleep cycles.
Quadratic Equation Solver
Analyze roots, vertex, symmetry axis, and sampled curve behavior in one run.
Unit Conversion Lab
Convert single or batch values with factors, uncertainty bands, and summary statistics.
Binomial Probability Calculator
Model discrete success scenarios with exact event probabilities and distribution stats.
Statistics Calculator
Run descriptive statistics, percentile analysis, and outlier checks on numeric datasets.
Function Plotter
Plot and diagnose custom expressions with range sampling, turning points, and integral estimates.
Drywall Material Estimator
Plan sheet counts, fasteners, compound quantities, and budget in one pass.
Concrete Mix Estimator
Model slab or cylindrical pours with waste, bag yield, and ready-mix comparisons.
Mortgage Affordability Planner
Model realistic home-buying limits with debt-to-income constraints and stress scenarios.
Portfolio Drawdown Analyzer
Project growth and stress behavior with drawdown, recovery, and real-return diagnostics.
Robots.txt Auditor
Validate robots directives, inspect rule coverage, and test crawl access for specific URLs.
UTM Campaign Builder
Build clean campaign URLs in bulk with validation and export-ready diagnostics.
Sitemap Validator
Audit sitemap XML for structural errors, duplicate URLs, and SEO-critical metadata quality.
Hreflang Checker
Audit international alternate mappings with reciprocity checks and compliance scoring.
JWT Decoder & Validator
Structural decoding and claim validation for JWT tokens with no server upload.
Cron Expression Builder
Compose, validate, and preview cron schedules before deploying jobs.
Input Lag Pipeline Calculator
From polling to display: break down pipeline latency and prioritize optimizations.
Frametime Variance Analyzer
Turn frametime samples into jitter, spike, and stability metrics.
Refresh Rate Response Time Checker
Evaluate refresh and response together for more accurate display tuning decisions.
Flooring Calculator
Plan flooring material quantities and budget with deterministic calculations.
URL UTM Builder
Build single campaign URLs with deterministic UTM normalization and validation.
Robots.txt Tester
Test robots.txt rules against user-agent and URL paths with deterministic precedence matching.
Concrete Volume Calculator
Estimate concrete volume from slab, footing, and column geometry with waste and truckload rounding.
FIRE Retirement Calculator
Project years to financial independence from spending, savings, returns, and withdrawal rate assumptions.
Rent vs Buy Calculator
Compare rent and buy scenarios over a fixed horizon with equity, carrying costs, and opportunity cost.
Investment Fee Drag Calculator
Quantify long-term portfolio drag from management fee differences under identical contributions and returns.
Priority Matrix Planner
Classify tasks into urgency-impact quadrants and rank execution order with weighted scoring.
Deadline Back Planner
Back-plan start date and milestones from a fixed deadline, workload, and daily capacity.
Habit Streak Tracker
Analyze completion logs for current streak, longest streak, and recent consistency metrics.
TDEE Macro Calculator
Estimate maintenance calories and macro targets using Mifflin-St Jeor and activity multipliers.
Body Fat Estimator
Estimate body fat using US Navy equations and compare against BMI-based proxy output.
Heart Rate Zone Calculator
Compute 5-zone training ranges from max-HR formulas or custom max HR, with optional Karvonen method.
Scientific Calculator
Evaluate safe mathematical expressions with functions, constants, and configurable angle mode.
Equation Solver
Solve linear, quadratic, and 2x2 linear systems with deterministic residual checks.