Calculators
Loans, mortgages, health, dates, and percentages — calculated instantly, with no sign-up and nothing ever uploaded.
Tools
Percentage Calculator
Find a percentage of a number, what percent one number is of another, percent increase/decrease, or the original number before a percentage was applied.
Loan Calculator
Calculate your monthly payment, total payment, and total interest for a fixed-rate loan.
Mortgage Calculator
Estimate your monthly principal and interest payment on a home loan.
BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units and see the standard adult category.
Age Calculator
Find the exact age between a date of birth and any target date, in years, months, and days.
Discount Calculator
Find the amount saved and the final price after a percentage discount.
Tip Calculator
Calculate a tip amount and total bill, and optionally split it evenly between everyone at the table.
Split Bill Calculator
Split a bill evenly between any number of people, with an optional tip.
Percentage Change Calculator
Find the percent increase or decrease from a starting value to a final value.
Percentage Difference Calculator
Find the percentage difference between two values using the standard average-based formula.
Scientific Calculator
A general-purpose calculator with real operator precedence, parentheses, trig, logarithms, powers, roots, and calculation history.
Aspect Ratio Calculator
Simplify a width and height to its aspect ratio, or calculate a missing width or height from a chosen ratio — supports common presets like 16:9 and 4:3.
Why these tools run entirely in your browser
Loan amounts, income, health details — the numbers you'd plug into a calculator are often personal. Every calculation here runs locally in JavaScript; nothing is uploaded, logged, or stored.