Free Online Calculators — Math, Finance, Health & More

50+ free online calculators covering finance, health, math, crypto, business and more. No signup required.

Calculator Categories

Loan, mortgage, investment, and savings calculators

Loan Calculator — Calculate monthly payments, total interest, and total cost for any loan amount.
EMI Calculator — Calculate Equated Monthly Installment for loans with principal, interest rate, and tenure.
Mortgage Calculator — Calculate your monthly mortgage payments including property taxes and insurance.
Compound Interest Calculator — Calculate compound interest and see how your investment grows over time.
Savings Calculator — Calculate how much your regular savings will grow over time with compound interest.

Crypto profit, staking, and trading calculators

Crypto Profit Calculator — Calculate your cryptocurrency profit or loss from buying and selling.
Leverage Calculator — Calculate position size and margin requirements for leveraged trading.
Liquidation Price Calculator — Calculate the price at which your leveraged position will be liquidated.
Staking Rewards Calculator — Calculate potential rewards from staking your cryptocurrency.
APY/APR Calculator — Convert between APY and APR based on compounding frequency.

BMI, calories, body fat, and fitness calculators

BMI Calculator — Calculate your Body Mass Index based on height and weight.
Body Fat Calculator — Estimate your body fat percentage using the US Navy method.
Calorie Calculator — Calculate daily calorie needs based on your goals and activity level.
BMR Calculator — Calculate your Basal Metabolic Rate - calories burned at rest.
Ideal Weight Calculator — Calculate your ideal body weight based on height using multiple formulas.

GPA, grade, and study calculators

GPA Calculator — Calculate your Grade Point Average based on grades and credit hours.
Grade Calculator — Calculate your final grade based on weighted categories.
Test Score Calculator — Calculate your test score percentage and letter grade.
Attendance Calculator — Calculate your attendance percentage for classes.

Percentage, age, date, and math calculators

Percentage Calculator — Calculate percentages, percentage change, and more.
Age Calculator — Calculate your exact age in years, months, and days.
Date Difference Calculator — Calculate the difference between two dates in days, weeks, and months.
Time Duration Calculator — Calculate the duration between two times.
Square Root Calculator — Calculate square root, cube root, and nth root of any number.

Paint, tile, concrete, and construction calculators

Paint Calculator — Calculate how much paint you need for walls and rooms.
Tile Calculator — Calculate how many tiles you need for floors or walls.
Concrete Calculator — Calculate how much concrete you need for slabs, footings, and columns.
Flooring Calculator — Calculate flooring material needed for your room.
Room Area Calculator — Calculate the area of a room for flooring, painting, or furnishing.

ROI, profit margin, and business calculators

Profit Margin Calculator — Calculate profit margin, markup, and gross profit for your business.
ROI Calculator — Calculate Return on Investment for any investment or project.
Break-Even Calculator — Calculate when your business will start making profit.
Commission Calculator — Calculate sales commission based on rate and sales amount.
Overtime Pay Calculator — Calculate overtime pay based on hours worked and rate.

Love, numerology, and personality calculators

Love Compatibility Calculator — Calculate fun love compatibility percentage between two names.
Name Numerology Calculator — Calculate your numerology number based on your name.
Birthday Calculator — Find out fun facts about your birthday and next birthday.
Zodiac Compatibility Calculator — Check zodiac compatibility between two signs.
Life Path Number Calculator — Calculate your life path number from your birth date.

Inflation, AI impact, and trending calculators

Inflation Impact Calculator — Calculate how inflation impacts your purchasing power over time.
Rent Increase Calculator — Calculate rent increases and compare to income growth.
Electricity Bill Calculator — Estimate your monthly electricity bill based on usage.
Gas Price Calculator — Calculate fuel costs for your trips and commutes.
Carbon Footprint Calculator — Estimate your annual carbon footprint from common activities.