Estimate your monthly mortgage payment with a detailed cost breakdown and amortization schedule.

Estimate blood alcohol content (BAC) based on drinks, weight, and time. For informational purposes only.

Estimate daily calorie needs (maintenance, cut, or bulk) using a standard BMR + activity model.

Calculate CPM, impressions, or total cost by filling in any two fields.

Estimate CD interest earned and ending balance at maturity with common compounding options.

Calculate monthly loan payments and view a full amortization schedule.

Solve common percent problems: percent of a number, percent change, and what percent one number is of another.

Calculate profit, margin, revenue, or cost. Enter any two fields to solve the rest.

Estimate concrete volume for common shapes (slabs, walls, footings, columns) with optional bag and cost estimates.

Calculate your GPA from course grades and credit hours using a standard 4.0 scale.

Convert dollar amounts between years using CPI-based inflation estimates.

Add up weekly hours from clock-in/clock-out times with breaks and optional overtime/pay estimates.

Estimate a HELOC borrowing limit based on home value and LTV, plus simple payment scenarios.

Estimate how much you can borrow against home equity and calculate a fixed monthly payment.

Estimate payoff time and total interest based on your balance, APR, and monthly payment (or target payoff date).

Add or subtract time from a date, or calculate the difference between two dates.

Calculate hours and minutes between times, including optional breaks and decimal-hour output.

Project retirement savings growth and estimate if you’re on track based on your contribution and return assumptions.

See how money grows with compound interest and contributions over time, with a year-by-year breakdown.

Estimate future investment value with recurring contributions and expected return assumptions.

Generate random integers or decimals in a range with options for quantity, duplicates, and sorting.

Create a QR code for a URL or text and download it as an image.

Build a tagged URL with UTM parameters for campaign tracking (source, medium, campaign, term, content).

Convert time (hh:mm:ss) to decimal hours (and back) with rounding options for timesheets.