Calculators

Convert an hourly wage into annual, monthly, and weekly pay. Free, in your browser, no sign-up.

Estimate the home price you can afford from your income, down payment, and rate. Free, in your browser, no sign-up.

Estimate an ideal body weight from height and sex, plus a healthy weight range. Free, in your browser, no sign-up.

Estimate income tax and after-tax income from a taxable amount and rate. Free, in your browser, no sign-up.

Project how an investment grows with regular contributions and compounding. Free, in your browser, no sign-up.

Calculate your monthly payment and see a full principal and interest schedule for any loan. Free, in your browser, nothing is uploaded.

Estimate the monthly payment, total paid, and total interest on a loan. Free, in your browser, no sign-up.

Split your daily calories into protein, carbs, and fat in grams. Free, in your browser, no sign-up.

Calculate profit, profit margin, and markup from cost and selling price. Free, in your browser, no sign-up.

Add, subtract, multiply, transpose, and invert matrices with adjustable dimensions. Free, in your browser, nothing is uploaded.

Estimate the monthly mortgage payment, total paid, and total interest. Free, in your browser, no sign-up.

Estimate your fertile window, ovulation day, and next period from your last period and cycle length. Free, in your browser, nothing is uploaded.

Generate Pascal's triangle with a chosen number of rows. Free, in your browser, no sign-up.

Estimate take-home pay from gross pay, tax withholding, and other deductions. Free, in your browser, no sign-up.

See the PayPal fee on a payment and how much you actually receive. Free, in your browser, no sign-up.

Find the percentage increase or decrease between two numbers. Free, in your browser, no sign-up.

Find the symmetric percentage difference between two values. Free, in your browser, no sign-up.

Find the percentage increase from an original value to a new value. Free, in your browser, no sign-up.

Generate the first N digits of pi, e, or the golden ratio with an arbitrary-precision algorithm. Free, in your browser, nothing is uploaded.

Estimate your due date, current week, trimester, and pregnancy milestones from your last period. Free, in your browser, nothing is uploaded.

Generate the first N prime numbers. Free, in your browser, no sign-up.

Find single-event and combined two-event probabilities. Free, in your browser, nothing is uploaded.

Compare your current and new loan payments to see the monthly savings. Free, in your browser, no sign-up.

Compare the true cost of renting versus buying a home over the years you plan to stay, with a break-even year. Free, in your browser, nothing is uploaded.