Everyday Life
Household math, finance and health are all live now. When a number can affect your money or your health, Clirto publishes the formula and its source with it — Mifflin–St Jeor for calories, Naegele's rule for due dates, the standard amortisation formula for loans — or it does not publish the number at all.
All everyday-life calculators
⌂Mortgage Calculator
Loan amount, interest rate and term in; monthly payment, total interest and a year-by-year balance out. The formula is shown, not hidden.≋Loan Calculator
Any loan — car, personal, student. Amount, rate and term in; monthly payment and total interest out.%Compound Interest Calculator
Starting amount, rate and years in; final value out, with the growth shown year by year. Optional monthly deposits.♥BMI Calculator
Weight and height in, BMI out, with the standard range it falls in. Metric or imperial.kcalCalorie Calculator
Daily calorie needs from the Mifflin–St Jeor formula — named, shown in numbers, and labelled an estimate, because it is one.40wPregnancy Due Date Calculator
First day of the last period in, estimated due date out — Naegele's rule, 280 days, shown plainly.$Tip Calculator
Bill and tip percentage in; tip, total and the per-person split out.?Random Number Generator
Random numbers in any range, dice rolls and coin flips — drawn with the browser's cryptographic random generator, the same source your device uses for security tokens.🎟Lottery Odds Calculator
The exact jackpot odds of any pick-N-from-M lottery, bonus ball included — counted with combinations, not estimated. The number is bracing; that is the point.♠Playing Card Probability Calculator
Exact probabilities for drawing cards: aces in a poker hand, hearts in a draw, any target cards in any hand size — counted with combinations from a 52-card deck.🐠Aquarium Volume Calculator
Tank length × width × height in, litres and US gallons out — plus what the water alone will weigh, which your floor and stand care about.🖼Photo Print Size Calculator
How big can this photo print? Pixels and DPI in, print size out — plus the megapixels, and what dropping to 150 DPI does to size and sharpness.🌐Time Zone Converter
Convert any date and time between 17 cities, daylight saving handled by the same timezone database your phone uses — plus a live 'right now around the world' table.
Loan amount, interest rate and term in; monthly payment, total interest and a year-by-year balance out. The formula is shown, not hidden.≋Loan Calculator
Any loan — car, personal, student. Amount, rate and term in; monthly payment and total interest out.%Compound Interest Calculator
Starting amount, rate and years in; final value out, with the growth shown year by year. Optional monthly deposits.♥BMI Calculator
Weight and height in, BMI out, with the standard range it falls in. Metric or imperial.kcalCalorie Calculator
Daily calorie needs from the Mifflin–St Jeor formula — named, shown in numbers, and labelled an estimate, because it is one.40wPregnancy Due Date Calculator
First day of the last period in, estimated due date out — Naegele's rule, 280 days, shown plainly.$Tip Calculator
Bill and tip percentage in; tip, total and the per-person split out.?Random Number Generator
Random numbers in any range, dice rolls and coin flips — drawn with the browser's cryptographic random generator, the same source your device uses for security tokens.🎟Lottery Odds Calculator
The exact jackpot odds of any pick-N-from-M lottery, bonus ball included — counted with combinations, not estimated. The number is bracing; that is the point.♠Playing Card Probability Calculator
Exact probabilities for drawing cards: aces in a poker hand, hearts in a draw, any target cards in any hand size — counted with combinations from a 52-card deck.🐠Aquarium Volume Calculator
Tank length × width × height in, litres and US gallons out — plus what the water alone will weigh, which your floor and stand care about.🖼Photo Print Size Calculator
How big can this photo print? Pixels and DPI in, print size out — plus the megapixels, and what dropping to 150 DPI does to size and sharpness.🌐Time Zone Converter
Convert any date and time between 17 cities, daylight saving handled by the same timezone database your phone uses — plus a live 'right now around the world' table.