Free calculators that just work
CalcYeti gives you fast, accurate answers for money, math and life — 24 calculators and counting. No sign-up, no clutter, just the number you need.
Popular calculators
Estimate your monthly mortgage payment, total interest, and payoff cost from the home price, deposit, rate, and term.
Open calculator →Calculate the monthly payment (EMI), total interest, and total cost of any personal or fixed-rate loan.
Open calculator →See how a lump sum plus optional regular deposits grows over time with compound interest.
Open calculator →Work out a percentage of a number, what percent one number is of another, and percentage increase or decrease.
Open calculator →Calculate your Body Mass Index from height and weight, in metric or imperial units, with your category.
Open calculator →Find out how much house you can afford based on your income, debts, and down payment.
Open calculator →See how inflation changes the value of money over time and what a sum will be worth in future.
Open calculator →Work out the sale price and how much you save from a percentage discount.
Open calculator →🏦 Loans & Mortgage
View all →Estimate your monthly mortgage payment, total interest, and payoff cost from the home price, deposit, rate, and term.
Open calculator →Calculate the monthly payment (EMI), total interest, and total cost of any personal or fixed-rate loan.
Open calculator →Work out your monthly car payment after down payment and trade-in, plus the total interest on your auto loan.
Open calculator →See how long it takes to clear a credit card balance and how much interest you'll pay at a given monthly payment.
Open calculator →Find out how much house you can afford based on your income, debts, and down payment.
Open calculator →See your monthly savings and break-even point when refinancing a mortgage or loan to a lower rate.
Open calculator →Calculate your DTI ratio — the number lenders use to decide how much you can borrow.
Open calculator →Estimate your monthly student loan payment, total interest, and payoff cost.
Open calculator →📈 Savings & Investing
View all →See how a lump sum plus optional regular deposits grows over time with compound interest.
Open calculator →Project how regular monthly investing plus an expected return builds wealth over time.
Open calculator →Find out exactly how much to save each month to reach a target amount by a set date.
Open calculator →Estimate your retirement pot from your current savings and monthly contributions, and the income it could provide.
Open calculator →See how inflation changes the value of money over time and what a sum will be worth in future.
Open calculator →Calculate return on investment as a total percentage and an annualised rate.
Open calculator →Work out the compound annual growth rate between a starting and ending value.
Open calculator →Calculate a stock's dividend yield and the passive income your investment could generate.
Open calculator →🧮 Everyday Math
View all →Work out a percentage of a number, what percent one number is of another, and percentage increase or decrease.
Open calculator →Split the bill and work out the tip per person in seconds — choose the tip percent and number of people.
Open calculator →Work out the sale price and how much you save from a percentage discount.
Open calculator →Add sales tax or VAT to a price to see the tax amount and total you'll pay.
Open calculator →Convert an hourly wage into annual, monthly and weekly salary — and back.
Open calculator →Find your exact age in years, months and days — plus total weeks, days and hours.
Open calculator →Count the exact time between two dates in years, months, days, weeks and hours.
Open calculator →💪 Health & Fitness
View all →Why trust these calculators?
Every CalcYeti calculator uses the same standard, transparent formulas that banks, lenders and textbooks use — and each one explains exactly how the result is worked out, so you can check the maths yourself. Nothing you enter leaves your device; the calculations run entirely in your browser. Our tools are for general information and education, not financial, tax or medical advice.