50 calculators available
Every calculator you need to work with numbers in one place
Every tool you need to calculate finance, health, math, and more — at your fingertips. All are 100% free and easy to use!
finance
Mortgage Calculator
Estimate monthly mortgage payments with principal, interest, taxes, and insurance breakdown.
Compound Interest Calculator
Project savings growth with compound interest and recurring contributions.
Loan Calculator
Calculate monthly payments and total cost for personal, auto, and business loans.
Amortization Schedule Calculator
Generate a full loan amortization schedule with principal, interest, and balance per payment.
Mortgage Affordability Calculator
Estimate how much house you can afford based on income, debts, and DTI guidelines.
Refinance Calculator
Compare your current mortgage to a refinanced loan — monthly savings, break-even, and total interest.
APR Calculator
Calculate the true Annual Percentage Rate (APR) including origination fees, points, and finance charges.
Auto Loan Calculator
Calculate car loan payments including down payment, trade-in, sales tax, and documentation fees.
Credit Card Payoff Calculator
See how long it takes to pay off credit card debt and how much interest you will pay.
Debt Payoff Calculator
Compare snowball and avalanche strategies to pay off multiple debts faster.
Salary / Paycheck Calculator
Estimate take-home pay from gross salary or hourly wage after federal taxes, FICA, and common deductions.
Sales Tax Calculator
Calculate sales tax, pre-tax price, or post-tax total. Add or remove tax bidirectionally.
Income Tax Calculator
Estimate US federal income tax, effective rate, marginal bracket, and refund or amount owed.
Tip Calculator
Calculate tip amount, total bill, and per-person split with preset percentages and optional tax.
Time Card Calculator
Calculate work hours, regular and overtime hours, and gross pay from clock in/out times.
Investment Return Calculator
Calculate total return, CAGR, and profit from an investment’s starting and ending value over time.
Retirement Savings Calculator
Project your retirement nest egg and monthly income from savings, contributions, returns, and a safe withdrawal rate.
Savings Goal Calculator
Find how much to save each month—or how long it will take—to reach a savings target with interest.
Net Worth Calculator
Calculate personal net worth as total assets minus total liabilities, with allocation breakdowns.
math
AI Calculator
Describe your problem in plain language. AI finds the right calculator, extracts your inputs, and CalcVo computes the result instantly.
Percentage Calculator
Percent of, what percent, of what, difference, change, increase, and decrease.
Discount Calculator
Calculate sale price after a percent or dollar discount, with optional stacked discounts and tax.
Margin Calculator
Calculate profit margin, markup, and profit from cost and selling price.
Markup Calculator
Calculate selling price, profit margin, and profit from cost and markup percentage.
Profit Margin Calculator
Calculate gross, operating, and net profit margins from revenue and expense inputs.
ROI Calculator
Calculate return on investment (ROI), annualized ROI, net profit, and after-tax returns.
Break-Even Point Calculator
Calculate break-even units and revenue from fixed costs, variable cost per unit, and selling price.
Fraction Calculator
Add, subtract, multiply, divide, and simplify fractions with mixed numbers and decimal equivalents.
Scientific Calculator
Evaluate scientific expressions with PEMDAS, trig, logs, roots, and degree or radian mode.
Standard Deviation Calculator
Calculate mean, variance, and standard deviation for a dataset with population or sample mode.
Square Footage Calculator
Calculate room and floor area in square feet or square meters for rectangular and multi-room layouts.
Concrete Calculator
Estimate concrete volume for slabs, footings, and columns in cubic yards and bags needed.
Random Number Generator
Generate cryptographically strong random integers or decimals in a custom range.
Dice Roller
Roll standard RPG dice (d4–d20) or custom dice with quantity and modifiers.
health
BMI Calculator
Body mass index with category guidance and metric or imperial units.
BMR & Calorie Calculator
Estimate BMR and daily calorie needs (TDEE) by age, gender, height, weight, and activity.
TDEE Calculator
Estimate total daily energy expenditure from BMR, activity level, and optional body fat percentage.
BMR Calculator
Calculate basal metabolic rate with Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle formulas.
Body Fat Percentage Calculator
Estimate body fat percentage with the US Navy circumference method or a BMI-based estimate.
Ideal Weight Calculator
Estimate ideal body weight with Robinson, Miller, Devine, Hamwi formulas and BMI healthy range.
Pregnancy Due Date Calculator
Estimate your due date from last menstrual period, conception date, ultrasound, or IVF transfer.
Ovulation Calculator
Estimate your ovulation day and fertile window from cycle length, period start, and luteal phase.
education
GPA Calculator
Calculate semester GPA from credit hours and letter grades on a 4.0 scale.
GPA to Percentage Calculator
Convert GPA or CGPA to percentage and back using 4.0, 5.0, and 10.0 grading scales.
Grade Calculator
Calculate your course grade from weighted assignments and see the letter grade.
Final Grade Calculator
Find the final exam score you need to reach a target course grade.
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