Free Online Tools & Calculators

Board Foot Calculator Board feet, weight, cost, and species data for woodworkers 69 Closing Cost Calculator Estimate your total closing costs before you sign 80 Concrete Calculator Calculate concrete volume for slabs, footings, columns, and more 65 Decking Calculator Every material for your deck build, from boards to footings 67 Drywall Calculator Calculate sheets, tape, mud, screws, and corner bead for any room 62 Fence Calculator Calculate posts, rails, pickets, and concrete for any fence project 53 Flooring Calculator Estimate materials & cost for any flooring project 58 Gas vs Electric Appliance Calculator Real state energy prices for gas vs electric appliance cost comparison 20 HELOC Payment Simulator See the payment shock before you sign: draw period vs repayment modeling 16 Home Affordability Calculator Find out how much house you can actually afford 85 Home Equity Calculator See how much equity you've built and your borrowing power 67 Home Equity Loan Comparison Compare HELOC, cash-out refi, and personal loans side by side 68 Home Insurance Coverage Calculator Calculate your true replacement cost and coverage needs 58 Homebuyer Readiness Score Score your readiness to buy across five key pillars 51 Investment Property Analyzer Analyze rental deals with BRRRR and buy-hold models 52 Landscape Material Calculator Cubic yards, weight, and bag count for any landscaping material 50 Mortgage Payment Calculator Calculate your monthly mortgage payment with taxes and insurance 153 Mortgage Refinance Calculator Know your break-even date before you refinance your mortgage 17 Moving Cost Estimator Get a realistic estimate for your upcoming move — local or cross-country 72 Paint Calculator Calculate exactly how much paint you need for any room 55 Property Tax Estimator Estimate your annual property taxes and monthly escrow impact 62 Renovation ROI Calculator Find out which home improvements actually pay for themselves 64 Rent vs. Buy Calculator Find out whether renting or buying saves you more over time 69 Rental Profit Calculator Find out if your short-term rental will actually make money after all expenses 60 Roofing Calculator Calculate squares, bundles & materials by pitch 46 Solar Savings Calculator See if solar panels are worth it for your home and how fast they pay for themselves 79 Stair Calculator Design code-compliant stairs with the right rise, run, and materials 50 Tile Calculator Exact tile, grout, and adhesive quantities for any layout pattern 59 Tree Canopy Shade Calculator Shadow length and shaded area by season and latitude 54 Tree Pruning Calendar Species-aware pruning windows for 40+ trees 27 Tree Watering Calculator Weekly gallon targets by trunk size, age & season 29 Wallpaper Calculator Get the exact number of wallpaper rolls with pattern repeat math 50

BAC Calculator Estimate your blood alcohol content based on drinks, weight, and time 75 Biological Age Calculator Discover your body's real age based on your lifestyle 116 Blood Pressure Calculator Understand your blood pressure reading with clinical context 53 BMI Calculator Calculate your Body Mass Index and understand what it means 108 Body Fat Calculator Estimate your body fat percentage using Navy, circumference, or skinfold methods 90 Caffeine Calculator Calculate your safe daily caffeine limit and track intake 56 Calories Burned Calculator Calories burned by activity & duration 61 Chocolate Toxicity Calculator for Dogs Find out if the chocolate your dog ate is dangerous -- fast 56 Dog Food Calculator Precise daily feeding portions based on your dog's needs 63 Dog Years Calculator Convert your dog's age to human years using modern veterinary science 71 Due Date Calculator Calculate your estimated due date and track key pregnancy milestones 72 Fasting Calculator Plan your intermittent fasting schedule and see when your body enters each metabolic zone 91 Keto Calculator Calculate your personalized keto macro targets for fat, protein, and carbs 48 Life Expectancy Calculator See how your lifestyle choices impact your projected lifespan 71 Macro & Calorie Calculator Find your daily calories and macros based on your body and goals 164 Nutrition Label Analyzer Instant health grade and nutrition breakdown for any packaged food 16 One-Rep Max Calculator Estimate your one-rep max and plan your training percentages 64 Pace & Race Time Calculator Find your pace, finish time, or distance — with splits for every mile 75 Pregnancy Weight Gain Calculator Track recommended weight gain week by week through pregnancy 43 Protein Per Dollar Calculator Rank any food by protein grams per dollar with live USDA data 41 Recovery & Readiness Score Get a 0-100 readiness score to know when to push and when to rest 62 Sleep Cycle Calculator Find the best times to sleep and wake based on your sleep cycles 68 Steps to Distance Calculator Convert your step count into miles, kilometers, and calories burned 52 Supplement Stack Analyzer Check your supplement stack for interactions, overlaps, and optimal timing 60 TDEE Calculator Find your daily calorie target based on your body and activity level 95 Training Plan Builder Generate a progressive multi-week training plan for any goal 56 VO2 Max Calculator Estimate your VO2 max and cardio fitness age with four test protocols 60 Water Intake Calculator Personalized daily hydration guide 69

1099 vs W-2 Calculator Compare your real take-home pay as a contractor versus an employee 94 AdSense Revenue Calculator Estimate AdSense revenue by traffic, niche, and ad density 67 Break-Even Calculator Find out exactly how many units you need to sell before you profit 116 Business Valuation Calculator Estimate your business value using four valuation methods 87 Cash Flow Forecaster Build a 12-month rolling cash flow model with danger zone alerts 63 Client Profitability Scorecard Score up to 8 clients by profitability, effort, and relationship quality 63 Commission Calculator Calculate sales commission for flat, tiered, and accelerator structures 71 CTR Calculator Calculate Click-Through Rate and compare it to industry benchmarks 56 Employee Cost Calculator Calculate the true total cost of hiring an employee beyond salary 118 Freelance Rate Calculator Find your ideal hourly rate based on your income goals 128 Influencer ROI Calculator Measure the true ROI of your influencer marketing campaigns 51 Instagram Engagement Calculator Calculate engagement rate & compare benchmarks 62 Invoice Calculator Build line items, apply discounts and tax, and see your invoice total 75 Margin & Markup Calculator Convert between margin and markup instantly — and find your ideal price 83 Meeting Cost Calculator Watch your meeting cost tick up in real time 61 Project Estimator Estimate project timelines and costs with confidence 65 Proposal Win-Rate & Pricing Analyzer Find your sweet spot pricing and improve your proposal win rate 75 Quarterly Tax Estimator Calculate your estimated quarterly tax payments and avoid penalties 63 ROAS Calculator Calculate your Return on Ad Spend and see if your campaigns are profitable 54 SaaS Pricing Calculator Model your SaaS pricing tiers and project recurring revenue 79 Salary & Hourly Converter Convert between salary and hourly rate — see what you really earn 85 Salary Percentile Calculator Government wage data to know if you're paid fairly by occupation and state 78 Startup Runway Calculator See how long your cash lasts and when you need to raise or profit 86 TikTok Engagement Rate Calculator Measure TikTok video performance against niche benchmarks 63 YouTube Earnings Calculator Estimate YouTube ad revenue by views, niche, and audience geography 72

Age & Date Calculator Calculate exact age, date differences, and countdowns 90 Car Depreciation Calculator See how your car loses value year by year with a 10-year projection 81 Electrical Power Calculator Calculate watts, kVA, HP, motor starting, and amperage 67 Electricity Cost Calculator See how much any appliance or device costs you to run. 91 EV vs Gas Cost Calculator Real state energy prices, tax credits, and 5-year ownership cost 19 Fuel Cost Calculator Calculate your trip fuel cost and compare vehicles side by side 95 Generator Wattage Calculator Size your generator by checking off what you need to power 62 Loan Comparison Engine Compare up to 4 loans side by side with amortization curves 56 MPG Calculator Calculate fuel economy and trip costs 59 Net Worth Tracker & Analyzer Calculate your net worth with percentile ranking by age 75 Percentage Calculator Solve any percentage problem instantly — three modes, one tool 103 Real Hourly Wage Calculator Discover what you really earn per hour after all work costs 46 Retirement Readiness Calculator Find out if you will have enough to retire comfortably 78 Sales Tax Calculator Calculate sales tax for any US state with reverse tax mode 105 Subscription Audit Calculator Track all your subscriptions and find what to cut 68 Subscription Tracker Calculator Reveal the true cost of subscription creep 79 Tip Calculator Calculate the right tip and split the bill easily. 184 Travel Budget Calculator Live exchange rates for multi-destination trip budgeting 12 Unit Converter Convert between any units of measurement instantly 95

AI Content Detector Analyze text to estimate whether it was written by AI or a human 66 AI Grammar Checker Check grammar, punctuation, spelling, and style instantly 71 Bio & About Page Generator Generate 5 professional bio formats instantly as you type 67 Brand Voice & Tone Analyzer Analyze your writing style across six voice dimensions 62 Case Converter Convert text between 10 naming conventions in one click 79 Cold Email & Outreach Scorer Get a brutally honest 0-100 score on your cold emails 50 Content Brief Builder Generate structured SEO content briefs with outlines and titles 51 Email Subject Line Tester Score your email subject lines for open rates before you hit send. 67 Headline Analyzer Score your headlines for clicks, engagement, and emotional impact 81 Invisible Character Remover Detect and remove hidden Unicode characters from text 71 Jargon Ipsum Generator Generate hilarious profession-themed placeholder text 74 Markdown Editor Write, preview, and convert Markdown with live rendering. 66 Meta Tag Analyzer Generate and preview meta tags for Google and social media 57 Reading Level Analyzer Analyze your text's reading level with multiple scoring methods 135 Schema Markup Generator Generate JSON-LD structured data for Google rich results 54 SEO Content Analyzer Optimize your content for search engines with actionable scoring. 75 Social Media Optimizer Optimize your posts for every platform with character counts and scoring. 67 Text Diff Tool Compare two texts side by side and see every difference highlighted. 76 Word & Character Counter Count words, characters, and reading time as you type 130

AI Token Calculator Count tokens and estimate API costs for any AI model. 72 Color Converter & Palette Generator Convert colors between formats and generate harmonious palettes 85 Cron Expression Builder Build and decode cron expressions with a visual schedule editor. 69 CSS Generator Generate beautiful CSS gradients, shadows, and glassmorphism effects. 76 Design Token & Color System Generator Generate complete design systems from a single brand color 70 DNS Lookup Query and inspect all DNS records for any domain instantly 55 Encoding Toolkit Encode, decode, and convert between Base64, URL, HTML, and more. 64 Hash Generator Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly 64 HTML Cleaner & Formatter Clean messy HTML from Word, Google Docs, and CMS editors 59 HTTP Security Header Grader Audit your HTTP security headers with A-F grades per category 54 IP Subnet Calculator Calculate subnet details from any IP/CIDR notation 49 JSON Formatter & Validator Format, validate, and explore JSON with instant error detection 105 JWT Decoder Decode, inspect, and validate JSON Web Tokens instantly. 61 Link Building Cost Calculator Estimate link building costs by DA, niche, and link type 70 Meta Tag Generator Generate SEO meta tags, Open Graph, and Twitter Cards with live previews 42 Password Generator Generate cryptographically secure passwords with strength analysis 51 QR Code Generator Generate customizable QR codes for URLs, WiFi, contacts, and more 48 Regex Tester Build and test regular expressions with live match highlighting 82 Robots.txt Generator Build and validate robots.txt files visually 59 SQL Formatter Format and beautify SQL queries instantly 44 SQL Query Builder & Explainer Build SQL visually or paste queries for plain-English explanations 58 UUID Generator Generate, validate, and format UUIDs instantly 59 XML Sitemap Generator Generate valid XML sitemaps with URL validation and smart splitting 57

Air Fryer Converter Convert oven recipes to air fryer settings instantly. 76 Baking Substitution Finder Find ingredient swaps with exact ratios and effectiveness ratings 65 BBQ & Smoking Calculator Estimate cook times, temps, and servings for any smoked meat 66 Cooking Unit Converter Convert cooking measurements with ingredient-aware accuracy 71 Meat Roasting Calculator Get oven temps, cook times, and pull temps for any roast 85 Pizza Dough Calculator Calculate exact dough ingredients using baker's percentages 57 Pizza Value Calculator Compare pizza sizes by price per square inch to find the best deal 63 Recipe Nutrition Calculator Calculate total and per-serving nutrition from any recipe 67 Recipe Scaler Scale any recipe up or down with smart kitchen-friendly rounding. 62

401(k) Calculator Project your 401(k) growth with employer matching and compound returns. 77 Auto Loan Calculator Calculate monthly payments, total interest, and underwater risk 62 Budget Calculator Allocate your paycheck with the 50/30/20 rule in seconds. 80 CD Calculator Calculate CD earnings with compounding, penalties, and ladder strategies 46 Compound Interest Calculator Visualize how your money grows with the power of compound interest. 121 Cost of Living Calculator Compare the true cost of living between any two cities. 98 Cost of Smoking Calculator See the true financial cost of smoking -- and what you could have instead 63 Credit Card Payoff Calculator See your debt-free date and the true cost of minimum payments. 75 Debt Payoff Planner Build a payoff plan and see how fast you can become debt-free. 99 Down Payment Calculator Plan your down payment with PMI analysis and a savings timeline 52 Emergency Fund Calculator Calculate your ideal emergency fund and savings plan 46 FIRE Calculator Financial independence retire early planner 57 Gas Price Tracker Live gas prices by state, crude oil trends, and your personal cost impact 172 Inflation Calculator See what your money was worth then — or will be worth in the future. 112 Pay Raise vs Inflation Calculator See whether your raise actually beat inflation using live CPI data 18 Roth IRA Calculator Project Roth IRA growth and compare to Traditional IRA after taxes 61 Savings Goal Calculator Find out exactly how much to save each month to reach any financial goal 46 Student Loan Calculator Compare repayment plans and calculate payoff timeline 52 Treasury Bill Calculator Live Treasury yields with state tax advantage and CD comparison 68

Boiling Point Calculator Find the boiling point of water at any altitude or pressure. 81 Density Calculator Calculate density, mass, or volume with 100+ material database. 66 Graphing Calculator Plot and explore mathematical functions interactively 92 Ohm's Law Calculator Calculate voltage, current, resistance, and power instantly. 72 Projectile Motion Calculator Calculate trajectory, range, height, and flight time with animation. 109 Resistor Color Code Calculator Decode color bands to resistance values or encode values to colors. 65 Scientific Calculator Trig, algebra, primes, and base conversion in one powerful tool 60 Statistics Calculator Descriptive stats, distributions, hypothesis testing, and regression 90 Tree Age Estimator Estimate tree age from trunk diameter using ISA growth factors 102