#1 Free Online Calculator Collection

Perform basic arithmetic operations with ease

Advanced mathematical functions and operations

Emulate the popular TI-84 graphing calculator with advanced functions

Advanced touchscreen graphing calculator with CAS capabilities

Calculate percentages, percentage change, and percentage of numbers

Calculate percentage increase or decrease between two values

Calculate logarithms and antilogarithms with any base

Calculate base raised to a power

Calculate slope from two points

Find missing side of a right triangle

Calculate monthly payments and total interest

Calculate mortgage payments, amortization schedule, and extra payment savings

Calculate compound interest growth with regular contributions

Estimate your retirement nest egg with regular contributions

Calculate sales tax, total price, and original price before tax

Calculate tip amounts and split bills with multiple people

Calculate discounted prices and savings from percentage or dollar amount off

Calculate return on investment and profitability

Calculate car loan payments, total interest, and affordability

Convert between hourly, daily, weekly, monthly, and yearly salary

Calculate how much home you can afford based on income and debts

Calculate your minimum freelance rate to reach target income

Calculate return on investment for rental properties

Convert z-scores or t-scores to p-values for hypothesis testing

Calculate confidence intervals for population mean

Convert correct answers to percentage and letter grade

Calculate body mass index and health category

Estimate daily calorie needs (BMR and TDEE)

Estimate body fat percentage using Navy method

Convert between different units of measurement

Calculate dates, age, and time differences

Material calculations for construction projects

Calculate area for rectangles, squares, circles, and triangles

Estimate payback period and return on solar panel investment

Estimate your annual CO2 emissions

Compare fuel costs for electric vs gasoline vehicles