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Calculate the expected check digit for a VIN, or validate an existing VIN's check digit. Free, instant, browser-based.

Generate a CSS clamp() value that scales font size or spacing smoothly between two viewport widths, with a live preview and size table.

Compare buying a home with renting and investing the difference. See your net worth both ways, year by year, and when buying breaks even.

Calculate the Compound Annual Growth Rate (CAGR) between an initial and final value over any number of years.

Calculate how an investment grows over time with compound interest — enter principal, rate, compounding frequency, and duration.

Calculate your monthly loan installment (EMI), total interest, and total repayment for any loan amount, rate, and term.

Find your financial independence number and age, then test your plan against 1,000 simulated markets to see how likely your money is to last.

Calculate the maturity value and interest of a fixed deposit, term deposit, or CD with daily, monthly, quarterly, or yearly compounding, in any currency.

Add or remove GST from any amount at any rate, for Australia, Canada, New Zealand, Singapore, India, and more, with an optional India CGST/SGST/IGST split.

See what today's amount will cost in the future, and how much its purchasing power shrinks, at any inflation rate.

Calculate percentages three ways — find X% of a number, what percent one number is of another, or the percentage change between two numbers.

Calculate return on investment (ROI) and annualized return from an initial investment amount, final value, and holding period.

Calculate the maturity value and interest of a recurring deposit or monthly savings plan, with monthly, quarterly, or yearly compounding, in any currency.

Estimate the retirement corpus you'll build from your current savings and monthly contributions by the time you retire.

Calculate the future value of a monthly SIP (Systematic Investment Plan) — see total invested, wealth gained, and the maturity value.

Convert a salary between hourly, daily, weekly, monthly, and annual figures based on your work schedule.

Calculate the tip amount, total bill, and per-person share for any bill amount, tip percentage, and party size.

Calculate IPv4 and IPv6 subnets from CIDR notation: network, broadcast, host range, masks, and address type, and split a network into smaller subnets.

Count words, characters, sentences, and paragraphs in your text, with estimated reading time — instantly, entirely in your browser.

Calculate exact age in years, months, and days from a date of birth, as of today or any date you choose. Free, instant, private.

Convert between square meters, square feet, acres, hectares, and other area units instantly. Free, accurate, browser-based.

Calculate the mean, median, mode, min, max, and sum of a list of numbers. Free statistics calculator, runs in your browser.

Add or subtract days, weeks, months, or years from a date and get the resulting calendar date, including the day of the week.

Find the exact number of days, weeks, and business days between two dates. Free calendar calculator, runs entirely in your browser.

Add, subtract, multiply, or divide two fractions and get the result simplified to lowest terms, plus its decimal equivalent.

Simplify a ratio to its lowest terms, or solve for a missing value in a proportion like A:B = C:?. Free and instant.

Calculate the exact duration between two date-and-time values, broken down into days, hours, and minutes.