33 calculators · 9 categories · 4 languages
Free online calculators
Fast, accurate calculators for money, everyday math and conversions.
- Fast
- Accurate
- Everyday
- 33Free calculators
- 9Category groups
- 4Languages: EN · ES · PT · FR
- LiveRates for currency, metals & crypto
Most used
Featured calculators
- US Finance
Mortgage Calculator
Calculate your monthly mortgage payment including principal, interest, property taxes, insurance, HOA and PMI with a full amortization schedule.
- Everyday
Percentage Calculator
Calculate percentages, percent of a number and percent change.
- US Finance
Compound Interest Calculator
See how savings grow with compound interest and regular contributions.
- Fitness & Health
BMI Calculator
Calculate Body Mass Index for adults using US customary (feet, inches, pounds) or metric units, plus a CDC category, healthy weight target, BMI Prime and Ponderal index.
- CurrencyLive
Currency Converter
Convert 30 major fiat currencies and 10 cryptocurrencies with mid-market spread, inverse rate and decimal precision per ISO-4217 code.
- Gold & MetalsLive
Gold & Precious Metals Calculator
Calculate melt value, purchase and selling price of gold, silver, platinum and palladium with hallmark fineness, troy ounces and dealer spread.
Directory
Every calculator, by category
33 tools in 9 groups. Hover a category to preview its calculators, or click to keep it open.
- Percentage CalculatorCalculate percentages, percent of a number and percent change.
- Tip CalculatorCalculate the tip and split the bill between any number of people.
- Age CalculatorCalculate your exact age in years, months and days.
- Discount CalculatorCalculate sale price, discount amount and percentage off any original price.
- VAT & Sales Tax CalculatorAdd or remove VAT/sales tax on any price and find the tax rate.
- Markup & Margin CalculatorCalculate selling price, profit, markup and gross margin from cost.
- Fuel Cost CalculatorEstimate fuel needed and trip cost from distance, MPG and gas price.
- Working Hours CalculatorCalculate hours worked between two times and compute gross pay.
- Unit ConverterConvert length, weight, volume and temperature between US and metric units.
- PDF to JPEG ConverterConvert PDF pages into JPEG images right in your browser. Free, no upload and no account needed.
- PDF to PNG ConverterTurn PDF pages into PNG images right in your browser. Lossless, free and without uploading your file.
- JPEG to PDF ConverterTurn a JPEG photo into a PDF in your browser. Free, lossless and without uploading your image.
- PNG to PDF ConverterTurn a PNG image into a PDF in your browser. Free, no upload and no account needed.
- PNG to JPEG ConverterTurn a PNG image into a JPEG in your browser. Free, no upload and no account needed.
- JPEG to PNG ConverterTurn a JPEG photo into a PNG in your browser. Free, no upload and no account needed.
- Images to PDF ConverterCombine several JPEG and PNG images into one PDF in your browser. Free, no upload and no account needed.
- Compound Interest CalculatorSee how savings grow with compound interest and regular contributions.
- Mortgage CalculatorCalculate your monthly mortgage payment including principal, interest, property taxes, insurance, HOA and PMI with a full amortization schedule.
- US Auto Loan CalculatorEstimate monthly car payments, total interest and the full cost of ownership including sales tax, trade-in equity and title fees with a complete amortization schedule.
- Student Loan CalculatorEstimate your monthly student loan payment, total interest and 10/20/25-year amortization schedule for federal Stafford, PLUS and private loans, including in-school deferment.
- Personal Loan CalculatorCalculate your monthly payment, effective APR, origination fees and total cost for unsecured personal loans, debt consolidation and home improvement financing.
- Credit Card Payoff CalculatorFind how long it will take to pay off credit cards with avalanche vs snowball strategies, plus total interest saved when you add extra monthly payments.
- Compound Interest CalculatorSee how savings grow with compound interest and regular contributions.
- Mortgage CalculatorCalculate your monthly mortgage payment including principal, interest, property taxes, insurance, HOA and PMI with a full amortization schedule.
- Personal Loan CalculatorCalculate your monthly payment, effective APR, origination fees and total cost for unsecured personal loans, debt consolidation and home improvement financing.
- Compound Interest CalculatorSee how savings grow with compound interest and regular contributions.
- Freelance Hourly Rate & Invoice CalculatorCalculate true take-home hourly pay, annual gross/net, invoice markup and billing rate for remote freelancers & LATAM self-employed (Brazil MEI, Mexico SAT, Colombia DIAN).
- Installment Interest & CET/APR Calculator (Cuotas / Parcelas)Compare interest methods: Price Table (SAC/Tabela Price), Simple Interest, Add-On, Canadian Rule. Calculate true effective APR/CET for Brazil, Mexico and Latin America installment loans (cuotas, parcelas).
- TDEE & Calorie CalculatorCalculate your daily calorie needs (TDEE) and BMR with macro splits for maintenance, cutting and bulking. Supports US customary units.
- BMI CalculatorCalculate Body Mass Index for adults using US customary (feet, inches, pounds) or metric units, plus a CDC category, healthy weight target, BMI Prime and Ponderal index.
- Macro CalculatorBuild a personalized protein, carb and fat plan for cutting, maintenance, bulking or body recomposition with gram-per-meal breakdowns (3–6 meals/day).
- Body Fat CalculatorEstimate body fat %, lean body mass and fat mass using the US Navy tape method, BMI-based Deurenberg approximation or Jackson-Pollock 3-site skinfold formulas.
- Ideal Weight CalculatorCompare four classic ideal-weight formulas (Hamwi 1964, Devine 1974, Robinson 1983, Miller 1983) with the NIH BMI healthy range for adults.
- Crypto Profit CalculatorCalculate gross and net crypto profit, ROI, cost basis, buy/sell exchange fees, staking rewards and a rough US LTCG / STCG tax estimate.
- Crypto DCA CalculatorCompare dollar-cost averaging (weekly, bi-weekly or monthly) vs a one-time lump-sum investment with schedule, portfolio value and ROI over time.