Calculators

Financial, health, and math calculators

BMI Calculator

Calculate your Body Mass Index with visual BMI scale

Loan Calculator

Calculate monthly payments, interest, and amortization schedules

Compound Interest Calculator

Calculate compound interest with contributions and visual growth chart

Tip Calculator

Calculate tips, split bills, and round totals with tipping guide

Mortgage Calculator

Calculate mortgage payments with taxes, insurance, PMI, and amortization

Calorie Calculator

Calculate daily calories (TDEE/BMR) with macro breakdowns for your goals

Salary Calculator

Convert salary between hourly, weekly, monthly, and annual with tax estimates

Discount Calculator

Calculate sale prices, savings, and stack multiple discounts

GPA Calculator

Calculate semester and cumulative GPA with course management

Fuel Cost Calculator

Calculate trip fuel costs, annual expenses, and CO2 emissions

Square Footage Calculator

Calculate area for rectangles, circles, triangles, and rooms with cost estimates

Income Tax Calculator

Estimate US federal income tax with brackets, FICA, and take-home pay

Retirement Calculator

Estimate retirement savings, income, and how much to save monthly

Hourly to Salary Calculator

Convert hourly wage to annual salary with tax estimates and overtime

Electricity Cost Calculator

Calculate electricity costs for appliances with daily, monthly, and yearly estimates

Savings Goal Calculator

Calculate how long to reach your savings goal or how much to save monthly

Pregnancy Due Date Calculator

Calculate pregnancy due date, trimester timeline, and development milestones

Grade Calculator

Calculate weighted grades, GPA, and what you need on finals

Paycheck Calculator

Calculate take-home pay with federal tax, FICA, state tax, and deductions

Running Pace Calculator

Calculate running pace, finish time, or distance with split times

ROI Calculator

Calculate return on investment, annualized ROI, and compare investments