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Calculator directoryPage 1 of 424,170 calculators
EveryCalc calculator directory, page 1
Browse the full EveryCalc library through plain HTML links. This directory page lists calculators 1–100 so visitors and search engines can discover every free calculator without relying on search or scripts.
Longevity CalculatorFind out how long you'll live based on your lifestyle, health, and habits. See which factors are adding or subtracting years — and what you can change.Health
AI Cost CalculatorCompare token costs across OpenAI, Anthropic, and Google AI models. Calculate monthly API spending for GPT-4o, Claude, Gemini, and more.Finance
Percentage CalculatorCalculate percentages instantly. Find X% of Y, what percent X is of Y, or the percentage change between two numbers.Math & Education
Tip CalculatorCalculate the perfect tip and split the bill between friends. Choose preset percentages or enter a custom tip amount.Finance
Chord FinderBuild major, minor, 7th, diminished, sus, add9, and power chords with piano and guitar visuals plus progression transposing.Lifestyle & Utility
Unicode Character Map & Symbol FinderSearch and copy arrows, currency signs, Greek letters, emoji, box drawing characters, and other popular Unicode symbols.Tech & Developer
Decibel CalculatorCompare noise levels, estimate safe exposure times, combine sound sources, and see how sound drops with distance.Lifestyle & Utility
Bra Size CalculatorEstimate your bra size in US, UK, and EU formats from underbust and bust measurements, with sister sizes and a quick fit guide.Health
Shoe Size ConverterConvert shoe sizes between US, UK, EU, and centimeters for men's, women's, and kids' shoes with a full fit chart.Lifestyle & Utility
Bill Splitter CalculatorSplit an uneven restaurant bill by item, divide tax and tip proportionally, and see exactly who owes whom.Finance
Event Countdown CalculatorCount down to any event with a live timer showing days, hours, minutes, seconds, and total time remaining.Lifestyle & Utility
JSON Formatter & ValidatorBeautify, minify, and validate JSON instantly. Inspect nested objects with an expandable tree view and useful structure stats.Tech & Developer
Text Compare ToolCompare original and changed text side by side, highlight added and removed lines, and see a quick similarity score.Tech & Developer
Markdown PreviewerWrite markdown with a live side-by-side preview, copy the rendered HTML, and check word or character counts as you type.Tech & Developer
Base64 Encoder & DecoderEncode text to Base64, decode Base64 back to text, work with URL-safe strings, and inspect data URL prefixes instantly.Tech & Developer
URL Encoder & DecoderEncode full URLs or query values, decode percent-encoded text, and inspect protocol, path, query params, and fragments.Tech & Developer
Aspect Ratio CalculatorCalculate missing width or height, simplify screen dimensions, and compare common ratios like 16:9, 4:3, and 9:16.Tech & Developer
Image ResizerResize JPG, PNG, and WebP images in your browser with custom dimensions, percentage scaling, or social media presets.Tech & Developer
PPI CalculatorCalculate pixel density, dot pitch, and total pixels for phones, monitors, tablets, and laptops. Compare two screens and check print DPI quality.Tech & Developer
QR Code GeneratorCreate QR codes for URLs, text, email, phone numbers, WiFi access, and vCards, then download them as PNG files.Tech & Developer
Word CounterCount words, characters, sentences, and paragraphs. Get reading time, reading level, and word frequency analysis.Tech & Developer
Lorem Ipsum GeneratorGenerate classic placeholder text by paragraph, sentence, word, or character count, then copy it instantly for mockups and wireframes.Lifestyle & Utility
Regex TesterTest regex patterns with live highlighting, capture groups, replacement previews, and ready-made examples for common text formats.Tech & Developer
Subnet CalculatorCalculate IPv4 subnet masks, network and broadcast addresses, usable host ranges, and plan VLSM subnet splits.Tech & Developer
Number Base ConverterConvert decimal, binary, octal, and hexadecimal values with live results, copy buttons, bit widths, and ASCII lookup.Tech & Developer
Color ConverterConvert HEX, RGB, HSL, and CMYK values with live previews, color sliders, copy buttons, and complementary color suggestions.Tech & Developer
CSS Gradient GeneratorBuild linear, radial, and conic CSS gradients with live preview, editable color stops, ready-made presets, and copyable code.Tech & Developer
Scientific CalculatorSolve arithmetic, trig, logarithms, powers, roots, and factorials with memory, history, and degree or radian mode.Math & Education
Electricity Cost CalculatorEstimate appliance energy use in kWh and see daily, monthly, and yearly electricity costs for one device or your full setup.Home & Construction
Electricity Bill EstimatorEstimate a full monthly electric bill from appliance usage patterns, utility rate, and billing period with ranked cost breakdowns.Home & Construction
Ohm's Law CalculatorCalculate voltage, current, resistance, and power from any two known values, with LED resistor sizing and wire gauge reference.Lifestyle & Utility
Random Number GeneratorGenerate random numbers, flip coins, roll dice, and pick winners from a list with one fast all-in-one tool.Tech & Developer
Typing Speed TestTest your typing speed with live WPM, accuracy, CPM, and error tracking across multiple timed rounds.Tech & Developer
Password GeneratorGenerate strong passwords and passphrases with adjustable length, symbols, strength ratings, and copy-ready results.Tech & Developer
Hash GeneratorGenerate SHA-1, SHA-256, SHA-384, and SHA-512 hashes for text or files, then compare checksums instantly.Tech & Developer
Square Footage CalculatorMeasure area for rectangles, circles, triangles, trapezoids, and L-shaped rooms. Add multiple spaces and estimate project cost.Home & Construction
Concrete CalculatorEstimate concrete for slabs, columns, walls, footings, and stairs. Add multiple sections, bag counts, waste, and ready-mix cost.Home & Construction
Pool Volume CalculatorEstimate pool water volume for rectangle, round, oval, and kidney pools, plus chlorine, salt, shock, and fill time.Home & Construction
Gravel & Paver CalculatorEstimate cubic yards of gravel, tons of stone, pavers needed, bedding sand, edge restraint, and project cost for paths and patios.Home & Construction
Fence CalculatorEstimate fence posts, sections, boards, rails, concrete bags, and material cost for privacy, semi-privacy, and picket fences.Home & Construction
Drywall CalculatorEstimate drywall sheets, joint compound, tape, screws, and corner bead for multiple rooms. Subtract doors and windows, add ceilings, and get total costs.Home & Construction
Paint CalculatorEstimate paint for walls and ceilings, subtract doors and windows, and total gallons, quarts, and project cost across multiple rooms.Home & Construction
Roof Pitch CalculatorCalculate roof pitch, angle, rise, run, total roof area, and fast material estimates for shingles, metal, and underlayment.Home & Construction
Soil & Mulch CalculatorEstimate topsoil, mulch, gravel, compost, or sand for garden beds and landscaping projects with cubic yards, bag counts, and cost.Home & Construction
Cooking ConverterConvert cups, tablespoons, teaspoons, ounces, grams, liters, and oven temperatures for recipes and meal prep.Lifestyle & Utility
Discount CalculatorCalculate sale price, discount amount, stacked discounts, sales tax, and total savings for any markdown.Finance
Sales Tax CalculatorAdd sales tax to a price, reverse-calculate the pre-tax amount from a total, and estimate tax for multiple items on one receipt.Finance
Profit Margin CalculatorCalculate gross margin, markup, target selling price, maximum cost, and compare margins across multiple products.Finance
Conversion Rate CalculatorCalculate conversion rate, compare A/B tests, set goals, and project ecommerce or marketing revenue from your funnel.Finance
Gas Mileage CalculatorCalculate MPG or km/L, estimate trip fuel cost, and compare annual fuel expenses between two vehicles.Finance
Speed CalculatorCalculate speed, distance, time, and running pace with support for miles, kilometers, mph, km/h, and m/s.Math & Education
Wind Chill & Heat Index CalculatorCalculate how cold or hot it really feels with official NWS wind chill and heat index formulas, plus safety risk levels.Health
Grade CalculatorCalculate weighted grade averages, find the final exam score you need, and see how many points are required to hit your target grade.Math & Education
GPA CalculatorCalculate semester and cumulative GPA by adding your classes, selecting letter grades, and entering credit hours.Math & Education
Standard Deviation CalculatorCalculate population and sample standard deviation, variance, mean, median, mode, range, and more from any list of numbers.Math & Education
Fraction CalculatorAdd, subtract, multiply, and divide fractions, simplify results, and convert between fractions and decimals with step-by-step help.Math & Education
Roman Numeral ConverterConvert numbers to Roman numerals or Roman numerals back to decimals, with instant validation, breakdowns, and quick reference help.Tech & Developer
Date CalculatorFind the number of days between two dates, count business days, or add and subtract days from any date.Math & Education
Time Zone ConverterConvert times between major world time zones, compare multiple regions, and spot next-day or previous-day changes instantly.Tech & Developer
Stopwatch & TimerRun a precision stopwatch with laps or set a countdown timer with a visual progress ring and optional sound alert.Lifestyle & Utility
Pomodoro TimerStay focused with a Pomodoro study timer featuring classic 25/5 intervals, long breaks, custom durations, and audio alerts.Lifestyle & Utility
Age CalculatorCalculate exact age in years, months, and days from a birth date. Also see total months, weeks, days, and your next birthday countdown.Health
BAC CalculatorEstimate blood alcohol content using body weight, gender, drink type, number of drinks, and hours since your first drink.Health
Pregnancy Due Date CalculatorEstimate your due date from your last menstrual period, conception date, or IVF transfer date, with trimester milestones and a week-by-week timeline.Health
Pregnancy Weight Gain CalculatorTrack healthy pregnancy weight gain by week using your pre-pregnancy BMI, current week, and singleton or twin guidance.Health
Ovulation CalculatorEstimate your ovulation date, fertile window, and next expected period with a visual monthly calendar and upcoming cycle predictions.Health
BMI CalculatorCalculate your Body Mass Index using height and weight. Supports imperial and metric units with BMI category and healthy range.Health
Dog Age CalculatorConvert dog years to human years with a modern size-based formula, life stage guidance, and lifespan ranges for different dog sizes.Health
Calorie CalculatorEstimate your BMR and daily calorie needs for maintenance, weight loss, or weight gain using the Mifflin-St Jeor formula.Health
Caffeine Half-Life CalculatorTrack caffeine from coffee, tea, cola, and energy drinks. See how much is still in your system now, at bedtime, and when to stop for better sleep.Health
Heart Rate Zone CalculatorFind your max heart rate and five personalized training zones using the standard formula or the Karvonen method.Health
Blood Pressure CheckerCheck your blood pressure category, log readings over time, and track your average systolic and diastolic values.Health
Sleep CalculatorFind ideal bedtimes or wake-up times based on 90-minute sleep cycles, with a built-in buffer for falling asleep.Health
Protein CalculatorFind your daily protein target based on body weight, goal, age, and activity level, with meal-by-meal guidance and food examples.Health
Macro CalculatorCalculate calories and your daily carb, protein, and fat targets with preset macro splits, custom ratios, and per-meal planning.Health
Water Intake CalculatorEstimate how much water to drink each day based on your weight, activity level, climate, and pregnancy or breastfeeding needs.Health
Pace CalculatorCalculate running pace, finish time, and race distance for 5Ks, 10Ks, half marathons, marathons, and custom workouts.Health
Body Fat CalculatorEstimate body fat percentage using the US Navy method or a BMI-based formula. See fat mass, lean mass, and your category instantly.Health
Waist-to-Hip Ratio CalculatorCalculate your waist-to-hip ratio and waist-to-height ratio, then review body shape and WHO-based health risk categories.Health
Ideal Weight CalculatorCompare Devine, Robinson, Miller, and Hamwi formulas, see your healthy BMI range, and check how your current weight compares.Health
Compound Interest CalculatorSee how your investments grow over time with compound interest and monthly contributions. Interactive growth chart included.Finance
CAGR CalculatorCalculate compound annual growth rate, compare investment performance, and project ending value from a target CAGR.Finance
Retirement CalculatorPlan your retirement nest egg, estimate monthly income, and see how long your savings may last with inflation-aware projections.Finance
401(k) & RRSP Retirement Savings CalculatorEstimate retirement account growth, employer match, tax savings, and monthly retirement income for a US 401(k) or Canadian RRSP.Finance
Investment Return CalculatorEstimate portfolio growth with monthly contributions, compare two investing scenarios, and see how compounding drives long-term returns.Finance
Savings Goal CalculatorPlan a savings target, estimate how long it will take to reach it, and find the monthly amount needed for vacations, emergencies, cars, or a house.Finance
Inflation CalculatorCompare historical U.S. inflation, calculate CPI-adjusted values, and estimate how purchasing power changes over time.Finance
Salary CalculatorConvert annual salary to hourly pay, monthly income, weekly earnings, and estimated after-tax take-home pay.Finance
Paycheck CalculatorEstimate paycheck deductions and take-home pay with federal tax, state tax, FICA, 401(k), and health insurance inputs.Finance
Tax Bracket CalculatorEstimate federal income tax by bracket, compare your marginal versus effective rate, and see after-tax income instantly.Finance
Loan CalculatorCalculate monthly payments, total interest, and total cost for any loan. Visual pie chart shows principal vs. interest.Finance
Amortization Schedule CalculatorGenerate a full month-by-month amortization table, see payoff date, and compare interest savings from extra payments.Finance
Auto Loan CalculatorEstimate monthly car payments, compare loan terms, and see total interest after tax, trade-in value, and down payment.Finance
Debt Payoff CalculatorBuild a debt payoff plan, compare Avalanche vs. Snowball, and see how extra payments cut interest and payoff time.Finance
Net Worth CalculatorAdd up assets and liabilities to see your net worth, compare debt versus wealth, and benchmark your progress by age.Finance
Currency ConverterConvert between major global currencies with approximate exchange rates, reverse rates, and quick amount shortcuts.Finance
Mortgage CalculatorEstimate monthly mortgage payments, total interest paid, and yearly amortization from home price, down payment, term, and rate.Finance
Closing Cost CalculatorEstimate lender fees, title charges, prepaids, escrow funding, and total cash to close on a home purchase.Finance
PMI CalculatorEstimate private mortgage insurance, monthly payment impact, and possible PMI removal timing.Finance
Mortgage Points CalculatorCompare no-points and rate-buydown scenarios to estimate point cost, monthly savings, and break-even timing.Finance