Calculators tools

Loans, BMI, percentages, dates — the answer in one go.

Graphing calculatorPlot y = x², sin(x), 2x+1 — up to six graphs at once. Drag, zoom, hover to read values. Free, like Desmos, in your browser.Your graphs, drawn — saved as an image if you want

CalculatorWork out a sum — plain or scientific. Free, instant, nothing to install.Your answer, worked out

Percentage calculatorWork out a percentage. Free, instant, nothing to install.Your answer, worked out

Age calculatorWork out an age from a date of birth. Free, instant, nothing to install.Your answer, worked out

Date calculatorAdd days to a date, or count the days between two dates. Free, instant, nothing to install.Your answer, worked out

Time duration calculatorHours and minutes between two times. Free, instant, nothing to install.Your answer, worked out

Tip calculatorWork out the tip and split the bill. Free, instant, nothing to install.Your answer, worked out

Fraction calculatorAdd, subtract, multiply or divide fractions. Free, instant, nothing to install.Your answer, worked out

Ratio & proportion calculatorSimplify a ratio, or solve a:b = c:x. Free, instant, nothing to install.Your answer, worked out

LCM & GCF calculatorLeast common multiple and greatest common factor. Free, instant, nothing to install.Your answer, worked out

Factor calculatorAll the factors and the prime factorisation of a number. Free, instant, nothing to install.Your answer, worked out

Slope calculatorThe slope of a line through two points. Free, instant, nothing to install.Your answer, worked out

Grade calculatorA score as a percentage and letter grade — or what you need on the final. Free, instant, nothing to install.Your answer, worked out

GPA calculatorGrade point average from your grades and credits. Free, instant, nothing to install.Your answer, worked out

Statistics calculatorMean, median, mode, standard deviation of a list. Free, instant, nothing to install.Your answer, worked out

Distance calculatorThe distance between two places from their coordinates. Free, instant, nothing to install.Your answer, worked out

Child height predictorHow tall a child will likely be, from the parents' heights. Free, instant, nothing to install.Your answer, worked out

Molecular weight calculatorThe molar mass of a chemical formula. Free, instant, nothing to install.Your answer, worked out

Bra size calculatorYour bra size from two measurements. Free, instant, nothing to install.Your answer, worked out

Tire size calculatorWhat a tyre code like 205/55R16 means, and how a new size compares. Free, instant, nothing to install.Your answer, worked out

Loan / EMI calculatorThe monthly payment on a loan. Free, instant, nothing to install.Your answer, worked out

Home loan / mortgage calculatorThe monthly payment on a home loan. Free, instant, nothing to install.Your answer, worked out

Car loan calculatorThe monthly payment on a car loan. Free, instant, nothing to install.Your answer, worked out

Compound interest calculatorHow money grows with compound interest. Free, instant, nothing to install.Your answer, worked out

Investment / SIP calculatorWhat a monthly investment grows to. Free, instant, nothing to install.Your answer, worked out

Retirement calculatorWhat you will have at retirement, and what it pays monthly. Free, instant, nothing to install.Your answer, worked out

Inflation calculatorWhat today's money is worth later, at a given inflation rate. Free, instant, nothing to install.Your answer, worked out

Rent vs buy calculatorWhether renting or buying costs less over the years you'll stay. Free, instant, nothing to install.Your answer, worked out

Net worth calculatorWhat you own minus what you owe. Free, instant, nothing to install.Your answer, worked out

Salary calculatorYearly, monthly, weekly, daily and hourly pay from any one of them. Free, instant, nothing to install.Your answer, worked out

Sales tax / GST calculatorAdd tax to a price, or take it out of a price. Free, instant, nothing to install.Your answer, worked out

Margin & markup calculatorProfit margin and markup from cost and price. Free, instant, nothing to install.Your answer, worked out

BMI calculatorYour body mass index. Free, instant, nothing to install.Your answer, worked out

BMR & TDEE calculatorCalories your body burns at rest, and in a day. Free, instant, nothing to install.Your answer, worked out

Calorie calculatorHow many calories to eat a day to lose, keep or gain weight. Free, instant, nothing to install.Your answer, worked out

Pregnancy due date calculatorThe due date and how far along the pregnancy is. Free, instant, nothing to install.Your answer, worked out

Ovulation calculatorYour fertile days this cycle. Free, instant, nothing to install.Your answer, worked out

Blood alcohol (BAC) calculatorAn estimate of blood alcohol content. Free, instant, nothing to install.Your answer, worked out

Area calculatorThe area of a room, plot or shape — in sq ft, sq m, gaj, cents, acres. Free, instant, nothing to install.Your answer, worked out

Volume calculatorThe volume of a box, tank, cylinder or other shape — in litres, cubic feet, m³. Free, instant, nothing to install.Your answer, worked out

Concrete calculatorHow much concrete a slab, footing or column needs — cement bags, sand, aggregate. Free, instant, nothing to install.Your answer, worked out

Peptide reconstitution calculatorHow much to draw into the syringe for a peptide dose. Free, instant, nothing to install.Your answer, worked out

Love calculatorA just-for-fun love match score for two names. Free, instant, nothing to install.Your answer, worked out