Free Online Calculators for Everything

Mortgage payments

Estimate monthly mortgage payments, total interest paid, and yearly amortization from home price, down payment, term, and rate.

Cash to close

Estimate lender fees, title charges, prepaids, escrow funding, and total cash to close on a home purchase.

Retirement planning

Plan your retirement nest egg, estimate monthly income, and see how long your savings may last with inflation-aware projections.

Investment growth

Estimate portfolio growth with monthly contributions, compare two investing scenarios, and see how compounding drives long-term returns.

Business loan payments

Estimate monthly payment, total interest, origination fee cost, and total borrowing cost for a business loan.

Self-employment tax

Calculate self-employment tax (SECA) including Social Security, Medicare, and the additional Medicare surtax.

All Calculators

Browse the fast homepage set, or open the full directory for all 3,020+ calculators.

Showing 24 popular calculators. Use the full directory for all 3,020+ calculators.

Longevity Calculator

Health

Find 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.

AI Cost Calculator

Finance

Compare token costs across OpenAI, Anthropic, and Google AI models. Calculate monthly API spending for GPT-4o, Claude, Gemini, and more.

Percentage Calculator

Math & Education

Calculate percentages instantly. Find X% of Y, what percent X is of Y, or the percentage change between two numbers.

Tip Calculator

Finance

Calculate the perfect tip and split the bill between friends. Choose preset percentages or enter a custom tip amount.

Chord Finder

Build major, minor, 7th, diminished, sus, add9, and power chords with piano and guitar visuals plus progression transposing.

Unicode Character Map & Symbol Finder

Search and copy arrows, currency signs, Greek letters, emoji, box drawing characters, and other popular Unicode symbols.

Decibel Calculator

Compare noise levels, estimate safe exposure times, combine sound sources, and see how sound drops with distance.

Bra Size Calculator

Health

Estimate your bra size in US, UK, and EU formats from underbust and bust measurements, with sister sizes and a quick fit guide.

Shoe Size Converter

Convert shoe sizes between US, UK, EU, and centimeters for men's, women's, and kids' shoes with a full fit chart.

Bill Splitter Calculator

Finance

Split an uneven restaurant bill by item, divide tax and tip proportionally, and see exactly who owes whom.

Photo Number Adder

Take a picture of paper, notes, or receipts and add up the numbers after checking the OCR results.

Event Countdown Calculator

Count down to any event with a live timer showing days, hours, minutes, seconds, and total time remaining.

JSON Formatter & Validator

Beautify, minify, and validate JSON instantly. Inspect nested objects with an expandable tree view and useful structure stats.

Text Compare Tool

Compare original and changed text side by side, highlight added and removed lines, and see a quick similarity score.

Markdown Previewer

Write markdown with a live side-by-side preview, copy the rendered HTML, and check word or character counts as you type.

Base64 Encoder & Decoder

Encode text to Base64, decode Base64 back to text, work with URL-safe strings, and inspect data URL prefixes instantly.

URL Encoder & Decoder

Encode full URLs or query values, decode percent-encoded text, and inspect protocol, path, query params, and fragments.

Aspect Ratio Calculator

Calculate missing width or height, simplify screen dimensions, and compare common ratios like 16:9, 4:3, and 9:16.

Image Resizer

Resize JPG, PNG, and WebP images in your browser with custom dimensions, percentage scaling, or social media presets.

PPI Calculator

Calculate pixel density, dot pitch, and total pixels for phones, monitors, tablets, and laptops. Compare two screens and check print DPI quality.

QR Code Generator

Create QR codes for URLs, text, email, phone numbers, WiFi access, and vCards, then download them as PNG files.

Word Counter

Count words, characters, sentences, and paragraphs. Get reading time, reading level, and word frequency analysis.

Lorem Ipsum Generator

Generate classic placeholder text by paragraph, sentence, word, or character count, then copy it instantly for mockups and wireframes.

Regex Tester

Test regex patterns with live highlighting, capture groups, replacement previews, and ready-made examples for common text formats.

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Longevity Calculator

Find 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.

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Explore EveryCalc by topic, from finance and health to developer tools and home projects.

Finance

Mortgage, loan, investing, tax, and money calculators.

2936

Compare loans, plan savings, estimate taxes, and make smarter money decisions.

AI CostTipBill Splitter

LongevityBra SizeWind Chill & Heat Index

Health

Fitness, nutrition, pregnancy, sleep, and wellness calculators.

Track body metrics, daily intake, heart health, and other wellness goals.

Unicode Character Map & SymbolJSON Formatter & ValidatorText Compare Tool

Tech & Developer

Encoding, formatting, design, networking, and utility tools.

Fast browser-based tools for dev workflows, design tasks, and technical lookups.

Electricity CostElectricity BillSquare Footage

Home & Construction

Material, utility, and project planning calculators for home jobs.

Estimate materials, utility usage, and measurements before you start a project.

Lifestyle & Utility

Everyday helper tools for music, cooking, timing, and quick tasks.

Practical tools for day-to-day decisions, hobbies, and small everyday jobs.

ChordDecibelShoe Size

PercentageScientificSpeed

Math & Education

Core math, school, date, and stats calculators.

Solve formulas, school problems, and date or statistics questions quickly.

Affordability Gap Calculator Debt-to-Income Calculator Payment-to-Income Ratio Calculator Down Payment vs PMI Calculator

Money collections

High-intent finance paths for the biggest money decisions

Jump straight into focused calculator bundles for home buying, home equity decisions, retirement planning, and take-home-pay or debt cleanup work.

FinanceCollection

Mortgage & Home Buying

Work through the biggest home-buying decisions in order: affordability, upfront cash, monthly payment, PMI, and whether buying beats renting.

Refinance Calculator Refinance Break-Even Calculator Refinance Closing Cost Calculator Refinance Amortization Calculator

FinanceCollection

Home Equity & Refinance

Compare the main ways homeowners tap equity or reset loan terms: standard refinance, cash-out refinance, HELOC, fixed home equity loans, recasting, and buydown-assisted purchases.

Retirement Calculator 401(k) & RRSP Retirement Savings Calculator 401(k) Calculator Investment Return Calculator

FinanceCollection

Retirement & Investing

Model long-term wealth building from accumulation to withdrawals with calculators for retirement targets, portfolio growth, compounding, and income planning.

Rent-to-Price Ratio Calculator Gross Rent Multiplier Calculator Rental Yield Calculator Cap Rate Calculator

FinanceCollection

Rental & Investment Property

Underwrite rental and investment property deals end to end: screen the price-to-rent ratio, run cap rate, layer leverage onto cash-on-cash return, build detailed cash flow, plan the rehab and ARV, and check DSCR for the loan.

Business Loan Calculator SBA 7(a) Loan Calculator SBA 504 Loan Calculator SBA Microloan Calculator

FinanceCollection

Business Loans, Taxes & Valuation

Compare business borrowing, SBA loan payments, acquisition financing, valuation multiples, owner taxes, and deduction planning from one finance path.

Paycheck Calculator Tax Bracket Calculator Salary Calculator Hourly to Salary Calculator

FinanceCollection

Debt, Tax & Paycheck

Figure out what you actually take home, how taxes shape each paycheck, and which debt payoff path frees up cash fastest.