EasCalculator — Free Online Calculators

Finance (51)

Rule of 78 Calculator

Calculate the interest charge on a loan using the Rule of 78, a method used by lenders to allocate interest charges on early payoffs.

Straight-Line Depreciation Calculator

Calculate the straight-line depreciation of an asset over its useful life, giving you the annual depreciation expense.

Declining Balance Depreciation Calculator

Calculate the accelerated depreciation of an asset using the double-declining balance method.

Net Present Value Calculator

Calculate the Net Present Value (NPV) of an investment using a discount rate and expected annual cash flows.

Degree of Operating Leverage Calculator

Calculate the Degree of Operating Leverage (DOL) to measure how sensitive a company's operating income is to changes in sales.

Cost of Goods Manufactured Calculator

Calculate the Cost of Goods Manufactured (COGM) to determine the total cost of producing goods during a specific period.

Cost of Goods Sold Calculator

Calculate Cost of Goods Sold (COGS) to track the direct costs attributable to the production of the goods sold in a company.

Cash Conversion Cycle Calculator

Calculate the Cash Conversion Cycle (CCC) to evaluate how long it takes a company to convert its investments in inventory into cash flows from sales.

Health (25)

FFMI Calculator

Calculate your Fat Free Mass Index (FFMI) and Normalized FFMI. Track your lean muscle growth, evaluate body composition, and understand your genetic muscle building potential.

Max Heart Rate Calculator

Calculate your maximum heart rate (MHR) using Fox, Tanaka, and Gellish formulas. Learn how to determine your cardiovascular training zones.

Target Heart Rate Calculator

Find your target heart rate (THR) zones using the advanced Karvonen formula and your resting heart rate. Optimize your cardio workouts for burning fat or gaining speed.

Waist-to-Hip Ratio Calculator

Calculate your Waist-to-Hip Ratio (WHR) online. Find your body fat distribution category and evaluate your risk for cardiovascular issues based on WHO standards.

Protein Intake Calculator

Calculate your optimal daily protein intake based on your weight, activity level, and fitness goals. Find your targets for muscle building, fat loss, or maintenance.

Creatine Dosage Calculator

Find your personalized creatine dosage for the loading and maintenance phases based on body weight. Learn how to optimize creatine absorption and timing.

Wilks Calculator

Calculate your Wilks Score to compare your lifting strength across weight classes and genders. Standard powerlifting index formula.

Calorie Deficit Calculator

Find your target daily calories to achieve weight loss. Calculate custom calorie deficits by flat numbers or percentages, and project weekly fat loss.

Business (35)

Income Elasticity of Demand Calculator

Calculate Income Elasticity of Demand to measure the responsiveness of the quantity demanded of a good to a change in consumer income.

Contribution Margin Calculator

Calculate your contribution margin and ratio to determine how individual products contribute to overall profit and fixed costs.

Margin of Safety Calculator

Calculate the margin of safety to find out how much sales can drop before a business reaches its break-even point.

Price Elasticity of Demand Calculator

Calculate Price Elasticity of Demand to understand how changes in price affect the quantity demanded of a good or service.

Cross-Price Elasticity Calculator

Calculate Cross-Price Elasticity to measure the responsiveness in the quantity demanded of one good when the price for another good changes.

Economic Order Quantity Calculator

Calculate the Economic Order Quantity (EOQ) to find the ideal order quantity that minimizes total inventory costs.

Markdown Percentage Calculator

Calculate the retail markdown percentage. Find out how much you are reducing the selling price of an item.

Revenue Per Employee Calculator

Calculate the Revenue Per Employee ratio to measure how efficiently a company is utilizing its workforce to generate sales.

Lifestyle (8)

Gas Mileage Calculator

Calculate your vehicle's gas mileage (MPG, L/100km, Km/L) and fuel costs. Easily track your fuel efficiency and save money on gas.

Pet BMI Calculator (Chonky Index)

Calculate your cat or dog's Feline Body Mass Index (FBMI) or estimated Body Fat Percentage. Find out if your pet is healthy, overweight, or chonky!

Coffee Ratio Calculator

Calculate the perfect ratio of coffee beans to water for Pour Over, French Press, AeroPress, and Cold Brew. Brew better coffee at home.

Human to Dog Years Calculator

Convert human years back into dog or cat years. See what age your pet would be if they aged like us using accurate veterinary formulas.

Wedding Budget Calculator

Plan your wedding expenses with our free budget calculator. Estimate costs for venue, catering, attire, and more. Stay organized and stress-free.

Bra Size Calculator

Calculate your accurate bra size using our free tool. Learn how to measure your band and bust for the most comfortable fit.

Car Fuel Cost Calculator

Calculate the total fuel cost for your next trip. Accurate estimator based on distance, fuel price, and your car’s mileage/efficiency.

Pet Age Calculator

Convert your pet’s age to human years. Accurate calculator for dogs (by size) and cats to help you understand their life stage.

General (12)

Random Number Generator

Generate truly random numbers between any two values. Perfect for contests, games, and statistical sampling.

Date Calculator

Calculate the exact number of days, weeks, months, and years between two dates. Easily add or subtract days to find a target date. Fast, free, and accurate.

Aspect Ratio Calculator

Find the simplified aspect ratio and calculate new proportional dimensions (width and height) for images, videos, screens, and design layout projects.

Tip Pool Calculator

Calculate tip distribution among employees based on hours worked. Ensure fair, transparent, and accurate tip pooling in restaurants, bars, and salons.

Age Difference Calculator

Calculate the exact age difference (years, months, and days) between two birthdates. Find out who is older and compare their chronological ages.

Percentage Change Calculator

Free online percentage change calculator. Calculate the percent increase or decrease from an initial value to a final value. Step-by-step math solver.

Chronological Age Calculator

Find your exact age in years, months, and days.

Price Per KG Calculator

Find how much product you can get for your money.

Career (3)

Hourly to Salary Calculator

Convert your hourly wage into equivalent weekly, biweekly, monthly, and annual salary figures. Perfect for job offer comparison and budgeting.

Commission Calculator

Calculate your total sales commission and overall earnings. Supports base salary plus commission rate structures. Simple online calculator with examples.

Freelance Hourly Rate Calculator

Calculate what you should charge as a freelancer to cover taxes, expenses, and desired profit. Professional rate estimator for consultants.

Cooking (3)

Baking Converter (Baker's Percentage)

Calculate ingredient weights for bread, pizza, and pastry using Baker's Percentage. Scale recipes easily by flour weight or desired total dough weight.

Dry Yeast to Fresh Converter

Convert between Instant Dry, Active Dry, and Fresh Yeast weights and volumes. Easily substitute any yeast type in your baking recipes.

Cooking Unit Converter

Convert cooking measurements instantly. Easily switch between cups, grams, ounces, milliliters, and teaspoons for any recipe.

Crypto (1)

Crypto Profit/Loss Calculator

Calculate your cryptocurrency profit or loss instantly. Factor in investment amount, buy price, sell price, and exchange fees for accurate ROI.

Education (13)

Roman Numeral Converter

Convert any number to Roman Numerals and vice-versa. Quick, accurate, and includes rules for reading and writing Roman numbers.

Scientific Notation Calculator

Convert between decimal numbers and scientific notation. Perform arithmetic operations (add, subtract, multiply, divide) with numbers in scientific format.

College GPA Calculator

Easily calculate your college semester and cumulative GPA on a standard 4.0 scale. Supports credit hours, letter grades, and custom course weights.

Fraction Calculator

Free online fraction calculator. Easily add, subtract, multiply, and divide proper, improper, and mixed fractions with step-by-step simplification.

Ratio Calculator

Free online ratio calculator. Solve for missing values in proportions (A:B = C:D), simplify ratios, and compare two ratios. Step-by-step solver.

Variance Calculator

Free online variance calculator. Quickly compute sample and population variance, mean, and standard deviation for any set of numbers with step-by-step math.

Standard Deviation Calculator

Free online standard deviation calculator. Calculate sample and population standard deviation, variance, mean, and count step-by-step for any dataset.

Probability Calculator

Free online probability calculator. Calculate the probability of a single event (A out of N), or joint probability P(A) and P(B) of independent events.

Family (1)

Child Support Estimator

Estimate monthly child support payments based on income and number of children. Simple tool for planning and legal awareness.

Home (2)

Kitchen Renovation Cost Estimator

Calculate the total cost of your kitchen remodel. Estimate expenses for cabinets, countertops, appliances, and labor with our free tool.

Concrete & Mulch Estimator

Calculate how much mulch, concrete, or soil you need for your landscaping project. Estimate volume in cubic yards or bags.

Productivity (3)

Time Duration Calculator

Free time duration calculator to easily find the exact time between two different hours, minutes, and seconds. Great for payroll and timesheets.

Business Days Calculator

Calculate the exact number of business days between two dates. Exclude weekends and plan your delivery, SLAs, and work schedules accurately.

Time Zone Meeting Planner

Find the best time for meetings across different time zones. Avoid middle-of-the-night calls with our global team scheduler.

Sustainability (1)

Solar Panel Payback Calculator

Calculate how long it takes for solar panels to pay for themselves. Estimate your ROI, monthly savings, and total environmental impact.

Tech (3)

Binary Calculator

Calculate binary arithmetic (add, subtract, multiply, divide) and logical bitwise operations (AND, OR, XOR). Convert base-2 to decimal, hex, and octal.

Pixels to REM Converter

Free online Pixels to REM converter. Convert CSS px to rem or rem to px based on any root font-size base (default 16px). Built for front-end developers.

Password Strength Calculator

Test how secure your password is. Calculate its entropy (bits) and estimate how long it would take for a computer to crack it.

Viral (2)

Zodiac Sign Finder

Find your true Zodiac (Star) sign instantly. Enter your birth date to discover your astrological sign, element, and core personality traits.

Gematria Calculator

Find the numerical value of any word or phrase using Gematria. Support for Simple, English, and Jewish Gematria methods.

Online Calculators.

Browse by Category

Finance (51)

Rule of 78 Calculator

Straight-Line Depreciation Calculator

Declining Balance Depreciation Calculator

Net Present Value Calculator

Degree of Operating Leverage Calculator

Cost of Goods Manufactured Calculator

Cost of Goods Sold Calculator

Cash Conversion Cycle Calculator

Price to Earnings Calculator

Earnings Per Share Calculator

Book Value Per Share Calculator

WACC Calculator

CAPM Calculator

Asset Turnover Calculator

Receivables Turnover Calculator

Days Sales Outstanding Calculator

Current Ratio Calculator

Quick Ratio Calculator

Debt to Equity Ratio Calculator

Return on Equity Calculator

Return on Assets Calculator

Free Cash Flow Calculator

Gross Pay Calculator

Present Value Calculator

Future Value Calculator

Rule of 72 Calculator

Overtime Pay Calculator

Amortization Calculator

CAGR Calculator (Compound Annual Growth Rate)

Dividend Calculator

ROI Calculator (Return on Investment)

Savings Goal Calculator

Auto Loan Calculator

Debt-to-Income (DTI) Calculator

Sales Tax Calculator

Paycheck Calculator

Rent vs Buy Calculator

SIP Calculator

Credit Card Payoff Calculator

Inflation Calculator

Lumpsum Calculator

Property Tax Calculator

FIRE Calculator

Airbnb Profit Calculator

Mortgage Calculator

Discount Calculator

GST Calculator

EMI Calculator

Simple Interest Calculator

Compound Interest Calculator

Salary Calculator

Health (25)

FFMI Calculator

Max Heart Rate Calculator

Target Heart Rate Calculator

Waist-to-Hip Ratio Calculator

Protein Intake Calculator

Creatine Dosage Calculator

Wilks Calculator

Calorie Deficit Calculator

Lean Body Mass Calculator

Body Surface Area Calculator

Intermittent Fasting Calculator

1RM Calculator (One Rep Max)

Running Pace Calculator

Water Intake Calculator

Ovulation Calculator

Keto Macro Calculator

Pregnancy Due Date Calculator

Sleep Calculator

Weight Loss Percentage Calculator

BMI Calculator

TDEE Calculator

BMR Calculator

Body Fat Calculator

Ideal Body Weight Calculator

Macro Calculator