Tool directory

Calculator and Tool Directory

301 tools are live now. New tools are grouped by everyday tasks, money, home projects, unit conversions, health, business, social metrics, writing, and utilities.

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Website page QA workflow

Check a public page before publishing or promotion.

Use the web utility checkers as one ordered pass: final URL, redirects, headers, indexability, previews, schema, headings, images, and links.

Run the combined Website Page QA Report Website page QA checklist Redirect Chain Checker HTTP Headers + Cache Checker Canonical URL + Meta Robots Checker Robots.txt + Sitemap Checker Open Graph + Twitter Card Checker JSON-LD Structured Data Checker Heading Structure + H1 Checker Image Alt Text Checker Page Links + Anchor Text Checker

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High-use tools in the library.

A short path into the pages people are most likely to need for money, shopping, work, health, writing, and everyday math.

Task index

Browse tools by the thing you need to decide.

The full directory is below, but these task groups surface the pages people usually need first.

Shop, split, and compare prices

Fast calculators for discounts, sales tax, tips, unit prices, fuel costs, and percentage checks before you buy.

25 tools

Discount calculatorSale price, savings, and estimated tax Unit price calculatorCompare price per ounce, pound, item, or serving Price per pound calculatorCompare grocery and bulk packages by cost per pound Price per ounce calculatorCompare grocery and household packages by cost per ounce Price per gram calculatorMetric package comparison by gram and per 100g Price per item calculatorMultipacks, bundles, sheets, pods, cans, and pieces Cost per serving calculatorPackage price, servings, usable servings, and comparison cost Bulk buy calculatorRegular price versus bulk price after waste and extra costs Coupon savings calculatorCoupons, rewards, effective discount, tax, and checkout total Sale comparison calculatorCompare two discounts, coupons, and estimated totals BOGO calculatorEffective unit price and discount for multi-buy deals Cashback calculatorRewards value, checkout total, and net cost Grocery budget calculatorWeekly and monthly food-at-home budget target Grocery savings plannerSavings plan from target spend, coupons, bulk buys, and waste Grocery price book calculatorRegular, current, and best recorded unit-price comparison Grocery list cost calculatorFood categories, household items, coupons, and budget check Meal cost calculatorIngredient total, batch cost, and cost per serving Pantry inventory value calculatorReplacement value, waste risk, and months covered Sales tax calculatorPre-tax price, tax amount, and total Tip calculatorTip amount and split bill total Gas trip cost calculatorFuel needed, trip cost, cost per mile, and split gas Fuel economy calculatorMPG, gallons per 100 miles, and annual fuel cost Gas cost per month calculatorMonthly miles, MPG, gas price, and fuel budget Parking cost calculatorHourly parking, monthly pass breakeven, and annual cost Toll cost calculatorWeekly, monthly, and annual tolls after discounts and fees

Measure rooms and home projects

Practical calculators for square footage, paint, tile, concrete, mulch, soil, sod, gravel, fencing, utilities, and appliance energy.

31 tools

Square footage calculatorRoom area, total area, and material cost estimate Home project cost plannerMaterials, labor, fees, contingency, budget, and cost per square foot Paint calculatorWall area, gallons needed, and paint cost Room paint calculatorRoom dimensions, wall count, coats, gallons, and cost Concrete calculatorCubic yards, 80 lb bags, and material cost Concrete slab cost calculatorSlab volume, ready-mix, labor, base, and formwork Flooring calculatorSquare footage, waste, boxes, and material cost Carpet calculatorSquare feet, square yards, pad, installation, and cost Wallpaper calculatorWall area, roll count, pattern waste, and material cost Drywall calculatorSheets, wall area, ceiling area, compound, tape, and screws Deck board calculatorDeck boards, linear feet, waste, screws, and board cost Paver calculatorPaver count, base gravel, bedding sand, waste, and cost Countertop calculatorCountertop square footage, island, backsplash, and cost Roofing shingle calculatorRoof area, roofing squares, shingle bundles, and cost Tile calculatorTile count, box count, waste, and material cost Mulch calculatorCubic yards, bags, and bulk mulch estimate Mulch bag calculatorBag count, cubic feet, waste, and total cost Soil calculatorCubic feet, cubic yards, bags, and cost Gravel calculatorCubic yards, tons, depth, waste, and cost Sod calculatorSod square footage, rolls, waste, delivery, and cost Fence cost calculatorLinear feet, panels, posts, gates, labor, and concrete Electricity cost calculatorAppliance energy use, daily cost, and monthly estimate Electricity bill calculatorMonthly kWh, rate, fees, taxes, and annual cost Appliance wattage calculatorWatts, hours, kWh, monthly cost, and annual cost Laundry cost calculatorWasher, dryer, water, detergent, monthly cost, and annual cost Dishwasher cost calculatorElectricity, water, detergent, cost per cycle, and annual cost Shower cost calculatorGallons per shower, hot water estimate, and household cost Water bill calculatorGallons, water rate, sewer rate, fees, and monthly bill Natural gas bill calculatorTherms, gas rate, fixed fees, taxes, and annual cost Trash bill calculatorBase service, pickups, extra bags, fees, and annual cost Fahrenheit to Celsius calculatorTemperature conversion with the formula shown

Convert units and recipe measurements

Specific conversion calculators for common searches: inches, pounds, miles, cups, tablespoons, grams, and kitchen measurements.

5 tools

Inches to centimeters calculatorExact inch-to-centimeter conversion Pounds to kilograms calculatorWeight conversion for body, luggage, shipping, and gym weights Miles to kilometers calculatorDistance conversion for driving, races, and maps Cups to tablespoons calculatorUS kitchen conversion for recipes Cups to grams calculatorIngredient-aware flour, sugar, butter, oats, rice, and liquid conversions

Plan household money decisions

Budget, paycheck, rent, bill splitting, emergency fund, and savings calculators for household planning.

20 tools

Budget calculatorMonthly income, spending, savings, and surplus Subscription cost calculatorMonthly, annual, and potentially unused recurring spend Household supplies budget calculatorPaper, cleaning, laundry, personal care, and other supplies Paycheck calculatorGross pay, estimated deductions, and take-home pay Emergency fund calculatorSavings target and time to reach it Rent affordability calculatorRent budget from income and monthly obligations Mortgage affordability calculatorHome price estimate from income, debts, rate, and down payment Debt-to-income ratio calculatorFront-end and back-end DTI from income and debt payments Rent split calculatorSplit rent by rooms, income, or custom weights Utility bill split calculatorSplit electric, water, gas, internet, trash, and other bills Internet bill split calculatorPlan price, equipment, fees, equal share, and custom share Download time calculatorFile size, Mbps, overhead, and estimated transfer time Data usage calculatorStreaming, calls, gaming, browsing, and data-cap usage Moving cost calculatorLabor, truck fee, mileage, supplies, and total estimate Moving box calculatorSmall, medium, and large boxes plus tape estimate Moving supply cost calculatorBoxes, tape, packing material, and supply buffer Moving truck size calculatorEstimate load cubic feet and rental truck size Storage unit size calculatorEstimate 5x5, 5x10, 10x10, 10x15, or 10x20 storage size Commute cost calculatorWeekly and monthly gas, parking, tolls, and mileage cost Cleaning service cost calculatorCleaner hours, supplies, tip, total, and cost per square foot

Compare loans and payoff plans

Loan calculators for monthly payments, mortgage planning, refinancing, auto loans, and debt payoff.

13 tools

Mortgage payment calculatorPrincipal, interest, taxes, insurance, and HOA Mortgage vs rent calculatorCompare owner net cost with rent cost over a holding period Car budget calculatorTotal monthly ownership cost compared with your own cap and take-home income Car affordability calculatorVehicle price from monthly budget, APR, tax, and fees Loan comparison calculatorCompare monthly payment, total interest, and total cost Loan interest calculatorTotal interest, payoff time, and annual interest preview APR calculatorAnnual percentage rate estimate from fees and payments Monthly interest calculatorMonthly, daily, and billing-cycle interest from APR Credit card payoff calculatorPayoff time and interest by payment amount Credit card interest calculatorBilling-cycle interest from APR and average daily balance Cash advance interest calculatorTransaction fee, daily interest, total cost, and estimated payoff Loan payoff calculatorPayoff date, total interest, and extra payment impact Refinance calculatorPayment change, breakeven, and lifetime interest

Check dates, work hours, and school math

Everyday calculators for date ranges, age, time duration, time cards, grades, GPA, averages, and fractions.

15 tools

Days between dates calculatorCalendar days, weeks, and optional end-date counting Business days calculatorWeekdays between dates after holiday or PTO adjustments Add business days calculatorDeadline date after adding workdays and skipping weekends Countdown calculatorDays, weeks, and approximate months until a target date Time duration calculatorElapsed time between two clock times Time card calculatorClock in, breaks, total hours, and gross pay Time clock calculatorClock in, clock out, breaks, weekly hours, and pay Lunch break calculatorSubtract lunch and unpaid breaks from a shift Work hours calculatorWeekly hours, monthly hours, breaks, and pay Final grade calculatorScore needed on a final exam for a target grade Weighted grade calculatorCategory scores, weights, and course grade Gradebook calculatorFlexible assignment points or weighted category rows Test grade calculatorPoints earned, percent score, and letter estimate GPA calculatorCredits, grades, quality points, and GPA Average calculatorMean, median, count, and sum

Track work pay and take-home planning

Work calculators for paycheck estimates, overtime pay, salary paychecks, and take-home planning.

9 tools

Biweekly paycheck calculatorGross biweekly pay, deductions, taxes, and take-home pay Salary paycheck calculatorSalary paycheck by pay frequency and deductions Overtime calculatorRegular pay, overtime pay, blended rate, and gross wages Double time calculatorRegular, time-and-a-half, double-time, and gross pay Shift differential calculatorExtra shift premium, gross pay, and blended rate Pay raise calculatorRaise percent, new annual pay, and per-paycheck increase Salary to hourly calculatorHourly equivalent from annual salary and paid hours PTO calculatorPTO accrual, annual hours earned, and remaining balance Paycheck calculatorGross pay, estimated deductions, and take-home pay

Plan savings and withdrawals

Savings calculators for goals, interest, retirement, emergency funds, and monthly withdrawals.

6 tools

Savings goal calculatorMonthly deposit needed to hit a target Savings interest calculatorInterest earned from deposits, APY, and time APY calculatorAnnual yield from interest rate and compounding Simple interest calculatorPrincipal, rate, time, interest, and total amount Savings withdrawal calculatorHow long savings lasts with monthly withdrawals Retirement calculatorProjected retirement balance and savings gap

Estimate health and nutrition numbers

Simple health calculators for BMI, weight range, body fat, calories, protein, water intake, and pregnancy date estimates.

12 tools

BMI calculatorBody mass index, category, and weight range Ideal weight calculatorDevine, Robinson, Miller, Hamwi, and BMI reference ranges Body fat calculatorTape-measure body fat, fat mass, and lean mass estimate Calorie calculatorMaintenance calories and goal estimates BMR calculatorResting calorie estimate from age, sex, height, and weight TDEE calculatorMaintenance calories from BMR and activity level Macro calculatorProtein, carbs, and fat targets Protein intake calculatorDaily protein grams from body weight and target Water intake calculatorTotal water estimate from reference intakes and activity Due date calculatorEstimated pregnancy due date and milestones Pregnancy week calculatorGestational age, trimester, due date, and days remaining Conception date calculatorEstimated conception date and window from due date

Price, bill, and run a small business

Practical calculators for pricing, invoicing, margins, client profitability, payment terms, fundraising, and cash runway.

19 tools

Profit margin calculatorGross margin, net margin, markup, and break-even revenue Freelance rate calculatorHourly rate, day rate, billable hours, and revenue target Invoice generatorInvoice number, dates, client, line items, tax, and balance due Net payment terms calculatorPayment wait, cash cost, late fee, and net invoice value Agency margin calculatorGross margin, operating margin, labor cost, and delivery cost Staffing agency markup calculatorPay rate, burden, bill rate, spread, and gross margin Retainer pricing calculatorSuggested retainer, target margin, buffer, and profit Client profitability calculatorClient profit, margin, revenue per hour, and support cost Cash runway calculatorRunway from cash balance, revenue, and monthly expenses Small business cash flow plannerAdjusted cash, runway, tax reserve, and 30/60/90 day cash Break-even calculatorUnits, revenue, and contribution margin needed to break even MRR calculatorEnding MRR, net new MRR, growth rate, and ARR run rate Churn rate calculatorCustomer churn, revenue churn, retained users, and MRR LTV CAC calculatorCustomer value, acquisition cost ratio, and payback period CPA calculatorCampaign acquisition cost, target spend gap, and gross ROAS Burn multiple calculatorCash burned versus net new ARR over the same period Startup dilution calculatorInvestor ownership, post-money valuation, and option pool impact Consulting fees calculatorProject fee from scoped hours, rate, overhead, buffer, expenses, and discount Contractor day rate calculatorDay rate from take-home goal, taxes, expenses, and billable days

Work with text and online metrics

Writing and social tools for hooks, headlines, bios, CTAs, domain names, word counts, character limits, case conversion, hashtags, platform copy limits, sponsorship pricing, engagement, creator income, affiliate commissions, and online publishing checks.

40 tools

Resume job description match checkerBrowser-only selected-term coverage, gaps, requirement wording, and resume structure signals Word counterWords, characters, sentences, and reading time Character counterCharacters with spaces, without spaces, and remaining limit Reading time calculatorReading time, speaking time, skim time, and word count Sentence counterSentence count, average sentence length, words, and paragraphs Line counterTotal lines, non-empty lines, blank lines, words, and characters Title case converterTitle case, sentence case, and slug preview Text case converterUppercase, lowercase, sentence case, title case, and slug output Slug generatorClean lowercase URL slugs from titles and phrases Username generatorHandle ideas from keyword, descriptor, and style Hook generatorPost, video, newsletter, and landing page hooks by platform Headline generatorArticle, page, newsletter, video, and social headline ideas Bio generatorProfile, website, founder, and creator bio drafts CTA generatorLanding page, email, social, profile, and video call-to-action ideas Domain name generatorDomain ideas from core word, niche, benefit, style, TLD, and length Keyword density calculatorKeyword occurrences, density, total words, and editing signals Meta description length checkerSnippet character count, word count, and common planning range Hashtag counterTotal hashtags, unique hashtags, repeats, words, and characters YouTube title length checkerVideo title characters, words, and remaining space LinkedIn post length checkerPost characters, words, line breaks, hashtags, and remaining space TikTok caption length checkerCaption characters, words, hashtags, and remaining space Brand deal calculatorSponsorship pricing from audience and deliverables Brand deal profitability calculatorCreator take-home, profit margin, costs, fees, and tax reserve Creator media kit builderSponsor-facing positioning, audience, metrics, proof, package, and contact sections Creator campaign breakeven calculatorBreak-even orders, revenue target, required conversion rate, and expected profit TikTok performance analyzerView velocity, intent actions, baseline comparison, and diagnosis TikTok post diagnostic toolGoal-aware post diagnosis, signal mix, and suggested next move TikTok engagement rate calculatorEngagement rate from views, likes, comments, and shares TikTok save rate calculatorSave rate, share rate, saves per 1,000 views, and intent mix TikTok view velocity calculatorViews per hour and simple 24-hour or 7-day projections Instagram engagement rate calculatorEngagement by reach, followers, and saves or shares Instagram Story engagement calculatorReply rate, sticker taps, exits, and tap behavior YouTube engagement rate calculatorEngagement by views, subscribers, and comment activity YouTube Shorts RPM calculatorShorts revenue estimate from views, RPM, and uploads Sponsorship CPM calculatorEffective CPM, media CPM, and price per deliverable Creator sponsorship readiness calculatorSponsor readiness score from reach, intent, fit, proof, and safety Creator revenue health analyzerRevenue mix, take-home estimate, concentration, and dependency Creator income calculatorPlatform, sponsor, affiliate, product, cost, and tax reserve Affiliate commission calculatorClicks, conversion rate, commission, refund impact, and EPC Content campaign ROI calculatorCampaign cost, attributed revenue, profit, ROAS, and cost per lead

Quick daily math

Everyday Calculators

Common calculators for percentages, dates, tips, age, time, unit conversions, home projects, and other everyday questions.

Percentage CalculatorPercent Change CalculatorAverage CalculatorFraction CalculatorDate CalculatorDays Between Dates CalculatorBusiness Days CalculatorAdd Business Days Calculator

View all 127 tools, including 119 more tools

Personal finance

Money Calculators

Simple calculators for budget, tax estimates, emergency funds, debt payoff, loans, savings, rent, salary, mortgage affordability, and household money math.

Household Supplies Budget CalculatorSubscription Cost CalculatorCommute Cost CalculatorMortgage CalculatorMortgage vs Rent Decision CalculatorMortgage Affordability CalculatorRent Affordability CalculatorRent Split Calculator

View all 48 calculators, including 40 more tools

Body and nutrition

Health Calculators

Quick health and fitness calculators for BMI, calorie estimates, weight ranges, and everyday wellness planning.

BMI CalculatorIdeal Weight CalculatorBody Fat CalculatorCalorie CalculatorBMR CalculatorTDEE CalculatorMacro CalculatorProtein Intake Calculator

View all 12 calculators, including 4 more tools

Work and pricing

Business Tools

Practical tools for rates, invoices, cash flow, cash runway, profit, pricing, and small business planning.

Cash Runway CalculatorSmall Business Cash Flow PlannerProfit Margin CalculatorFreelance Rate CalculatorInvoice GeneratorNet Payment Terms CalculatorAgency Margin CalculatorStaffing Agency Markup Calculator

View all 46 tools, including 38 more tools

Social metrics

Social Media Tools

Creator tools for TikTok, Instagram, YouTube, engagement, save rates, Shorts RPM, sponsorship pricing, media kits, creator income, and campaign ROI.

TikTok Performance AnalyzerTikTok Post Diagnostic ToolTikTok Engagement Rate CalculatorBrand Deal CalculatorBrand Deal Profitability CalculatorCreator Media Kit BuilderCreator Campaign Breakeven CalculatorYouTube Shorts RPM Calculator

View all 19 tools, including 11 more tools

Words and names

Text and Writing Tools

Text tools for word count, characters, case conversion, hashtags, meta descriptions, platform limits, usernames, hooks, headlines, bios, and CTAs.

Resume Job Description Match CheckerWord CounterCharacter CounterReading Time CalculatorSentence CounterLine CounterTitle Case ConverterText Case Converter

View all 21 tools, including 13 more tools

Files, links, and web tasks

Utility Tools

Browser-first utilities for QR codes, links, files, formats, web snippets, and other practical tasks that do not need a spreadsheet-style calculator.

UTM Link BuilderJSON Formatter / ValidatorJWT Decoder and Claims InspectorText and JSON Diff CheckerCron Expression Explainer and Next Run PreviewHash Generator and Checksum ToolRegex Tester and ExplainerColor Converter HEX / RGB / HSL

View all 28 tools, including 20 more tools