Calculators & Converters
Percentages, age, BMI, EMI, GST and unit conversions — accurate answers in one tap.
Percentage Calculator
Three calculators in one: find X% of a number, what percent X is of Y, and percentage change.
Open toolAge Calculator
Find your exact age in years, months and days — plus total days lived and days to your next birthday.
Open toolBMI Calculator
Calculate your Body Mass Index in metric or imperial — with your WHO category and healthy weight range.
Open toolLoan / EMI Calculator
Calculate monthly loan payments, total interest and total cost — for any currency, any loan type.
Open toolSales Tax / VAT / GST Calculator
Add or remove sales tax, VAT or GST from any price — with presets for India, UK, US, EU, Australia and more.
Open toolUnit Converter
Convert length, weight, temperature, area and volume — between metric, imperial and other units, instantly.
Open toolCompound Interest Calculator
See how money grows with compound interest — lump sum plus optional monthly contributions, any currency.
Open toolSIP Calculator
Calculate the future value of monthly SIP investments — invested amount vs estimated gains, instantly.
Open toolDiscount Calculator
Find the final price after a discount — including stacked "extra % off" deals, which don't add the way you'd think.
Open toolTip Calculator
Calculate the tip, the total, and each person's share when splitting the bill — with one-tap percentages.
Open toolDate Difference Calculator
Days between two dates — exact years/months/days, total days, weeks, and working days.
Open toolNumber to Words Converter
Convert numbers to words in Indian (lakh, crore) or international (million, billion) systems — with a cheque-writing currency mode.
Open toolRoman Numeral Converter
Convert numbers to Roman numerals and back — 1 to 3999, with validation that catches malformed numerals.
Open toolNewAverage Calculator
Mean, median, mode, range and standard deviation from any list of numbers — instantly.
Open toolNewTime Duration Calculator
Hours and minutes between two times — with break deductions, overnight shifts and decimal hours for payroll.
Open toolNewFile Size Converter
Convert bytes, KB, MB, GB and TB — in both the decimal and binary systems, side by side.
Open toolNewTemperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly — edit any scale, the others follow.
Open toolNewScientific Calculator
A full scientific calculator — trig, logarithms, powers, roots and constants — with keyboard support.
Open toolCountdown Timer
A full-screen countdown timer with a progress ring and an alarm at zero — presets for Pomodoro, cooking and more.
Open toolOnline Stopwatch
A precise stopwatch with lap timing — hundredths of a second, fastest/slowest lap highlighting, no install.
Open toolDays Until Date Calculator
Count the days until any date — birthdays, holidays, deadlines — with weeks and months context and holiday presets.
Open toolWeek Number Calculator
Find the ISO 8601 week number for today or any date — plus day of year, quarter and weeks remaining.
Open toolBusiness Days Calculator
Count working days between two dates, or add business days to a date — with custom holiday exclusions.
Open toolTime Zone Converter
Convert any date and time between world time zones — DST-aware, with the live time difference shown.
Open toolAspect Ratio Calculator
Resize without distortion — enter one new dimension and get the other, ratio locked. Presets for 16:9, 4:3, 1:1 and more.
Open tool