Most Popular in the US
The calculators American visitors reach for first — home buying, paychecks, loans and grades.
Mortgage Calculator
Estimate your true monthly house payment — not just principal and interest, but taxes, insurance, PMI and HOA dues too.
Finance 🧾Paycheck Calculator
Convert an hourly wage to a yearly salary — or a salary offer to an hourly rate — with US overtime rules built in.
Finance 💵Loan Calculator
See the monthly payment and the real total cost of any loan before you sign anything.
Finance 📈Compound Interest Calculator
Watch compound growth do the heavy lifting on your savings, 401(k) or brokerage account.
Finance 🎓GPA Calculator
Calculate your GPA the way US colleges do — letter grades on the 4.0 scale, weighted by credit hours.
Health & Time ⚖️BMI Calculator
Find your body mass index from your height and weight, using US units first — pounds, feet and inches.
Health & Time 🍽️Tip Calculator
Figure out the tip in seconds and split the whole bill evenly — no awkward math at the table.
Finance 🎂Age Calculator
Your exact age — in years, months and days — plus your next birthday and the day of the week you were born.
Health & TimeNo tools match your search. Try a shorter word, like "loan", "image" or "text".
Finance
Mortgage Calculator
Estimate your true monthly house payment — not just principal and interest, but taxes, insurance, PMI and HOA dues too.
Finance 💵Loan Calculator
See the monthly payment and the real total cost of any loan before you sign anything.
Finance 📈Compound Interest Calculator
Watch compound growth do the heavy lifting on your savings, 401(k) or brokerage account.
Finance 🧾Paycheck Calculator
Convert an hourly wage to a yearly salary — or a salary offer to an hourly rate — with US overtime rules built in.
Finance 🍽️Tip Calculator
Figure out the tip in seconds and split the whole bill evenly — no awkward math at the table.
Finance %Percentage Calculator
Three percentage questions everyone runs into — discounts, grades, raises, growth — answered in one place.
FinanceHealth & Time
BMI Calculator
Find your body mass index from your height and weight, using US units first — pounds, feet and inches.
Health & Time 🎂Age Calculator
Your exact age — in years, months and days — plus your next birthday and the day of the week you were born.
Health & Time 📅Date Calculator
Count the days between two dates, or find the date 30, 60 or 90 days from now — in one click.
Health & Time 🎓GPA Calculator
Calculate your GPA the way US colleges do — letter grades on the 4.0 scale, weighted by credit hours.
Health & TimeText Tools
Word Counter
Paste any text and instantly see word count, characters, sentences, reading time and speaking time.
Text Tools 🔤Case Converter
Turn any text into UPPERCASE, lowercase, Title Case or sentence case with one click.
Text Tools 🧹Remove Duplicate Lines
Paste a list, remove every duplicate line, and get a clean, unique list back — with sorting options.
Text Tools ¶Lorem Ipsum Generator
Generate clean placeholder text — paragraphs, sentences or words — for layouts, mockups and prototypes.
Text Tools 🔐Password Generator
Create strong random passwords in your browser — nothing is sent anywhere or stored.
Text ToolsDeveloper Tools
JSON Formatter
Pretty-print messy JSON, validate it, or minify it for production — with clear error messages when it is broken.
Developer Tools 🔣Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to readable text — Unicode-safe and instant.
Developer Tools 🔗URL Encoder / Decoder
Encode special characters for safe links and query strings — or decode a percent-encoded URL back to plain text.
Developer ToolsImage Tools
Everyday Tools
QR Code Generator
Turn any link or text into a clean, printable QR code — and download it as a PNG, free with no watermark.
Everyday Tools 📏Unit Converter
Convert between US imperial and metric units — length, weight, volume and temperature — instantly.
Everyday Tools 🎨Color Converter
Convert colors between HEX, RGB and HSL — with a picker and a big live preview swatch.
Everyday Tools 🎲Random Number Generator
Generate truly random numbers in any range — for raffles, giveaways, games, samples and fair picks.
Everyday Tools ⏱️Timer & Stopwatch
A countdown timer with handy presets, plus a stopwatch with laps — for cooking, workouts, study and sports.
Everyday Tools