34 calculators · 9 categories · 4 languages
Free online calculators
Fast, accurate calculators for money, everyday math and conversions.
- Fast
- Accurate
- Everyday
- 34Free 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
Work out a percentage of a number, what share one value is of another, and the percentage increase or decrease between two values.
- US Finance
Compound Interest Calculator
See how a deposit grows with compound interest and regular monthly or yearly contributions, and how much of the final balance is interest.
- Fitness & Health
BMI Calculator
Calculate adult Body Mass Index in US customary (feet, inches, pounds) or metric units, with a CDC category, healthy weight, 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
34 tools in 9 groups. Hover a category to preview its calculators, or click to keep it open.
- Percentage CalculatorWork out a percentage of a number, what share one value is of another, and the percentage increase or decrease between two values.
- Tip CalculatorCalculate the tip, the total bill and how much each person pays, and split the check between any number of people, down to the cent.
- Age CalculatorWork out your exact age in years, months and days, with your total days and weeks and a countdown to your next birthday. Your date of birth is never stored.
- Discount CalculatorWork out the sale price and how much you save from an original price and a discount, or find the discount percentage between two prices.
- VAT & Sales Tax CalculatorAdd VAT or sales tax to a net price, remove it from a gross price, or work out the rate from both — for any percentage-based tax.
- Markup & Margin CalculatorFind the selling price from a cost and a target markup or margin, and see the profit and how markup and margin translate into each other.
- Fuel Cost CalculatorEstimate how much fuel a trip needs and what it costs from the distance, your car's MPG and the fuel price, plus the cost per mile and per kilometre.
- Working Hours CalculatorCalculate the hours worked between two times with a break deducted, and turn those hours into gross pay using a single hourly rate.
- Unit ConverterConvert length, weight, volume and temperature between metric and US units using exact conversion factors, with the result shown instantly.
- 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 single-page PDF in your browser, choosing A4, US Letter or image size and the margins, at the original quality.
- PNG to PDF ConverterPlace a PNG image on a PDF page in your browser, choose A4, US Letter or image size, set the margins and download — no upload needed.
- PNG to JPEG ConverterConvert a PNG to a JPEG in your browser with a quality setting to balance detail and file size. Transparent areas are filled with white.
- JPEG to PNG ConverterConvert a JPEG photo to a lossless PNG in your browser and download it without uploading anything. PNG files are usually larger.
- Images to PDF ConverterCombine several JPEG and PNG images into one PDF in your browser. Free, no upload and no account needed.
- Merge PDF FilesCombine several PDF files into one document in your browser, arrange the order, and download the result — the files are never uploaded.
- Compound Interest CalculatorSee how a deposit grows with compound interest and regular monthly or yearly contributions, and how much of the final balance is interest.
- Mortgage CalculatorCalculate your monthly mortgage payment including principal, interest, property taxes, insurance, HOA and PMI with a full amortization schedule.
- US Auto Loan CalculatorEstimate your monthly car payment, total interest and ownership cost, including sales tax, trade-in value and title fees, with a full amortization schedule.
- Student Loan CalculatorEstimate your monthly student loan payment and total interest, with 10/20/25-year amortization schedules for federal Stafford, PLUS and private loans.
- 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 a deposit grows with compound interest and regular monthly or yearly contributions, and how much of the final balance is interest.
- 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 a deposit grows with compound interest and regular monthly or yearly contributions, and how much of the final balance is interest.
- Freelance Hourly Rate & Invoice CalculatorCalculate your true take-home hourly pay, annual gross and net income, invoice markup and billing rate as a remote freelancer or LATAM self-employed worker.
- Installment Interest Calculator (APR/CET)Compare Price Table, SAC, Add-On, simple interest and Canadian Rule methods, and see the effective APR/CET for installment loans in Brazil and Latin America.
- TDEE & Calorie CalculatorCalculate your daily calorie needs (TDEE) and BMR with macro splits for maintenance, cutting and bulking. Supports US customary units.
- BMI CalculatorCalculate adult Body Mass Index in US customary (feet, inches, pounds) or metric units, with a CDC category, healthy weight, 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.