Calculators

Crop Yield Calculator

Estimate production from crop type and acreage.

Concrete Calculator

Calculate concrete volume for slabs, circular pads, and repeated pours.

Fence Calculator

Estimate fence panels, posts, gates, and rails.

Flooring Calculator

Estimate flooring area, waste, cartons, and material cost.

Lumber Calculator

Calculate board feet and estimated lumber cost.

Mulch & Soil Calculator

Estimate cubic yards, bags, and cost of mulch or soil needed for a garden bed.

Paint Calculator

Estimate paint needed for walls by room size, openings, coats, and coverage.

Roofing Calculator

Estimate roof area, squares, bundles, and waste.

Tile Calculator

Estimate tiles, boxes, and cost needed for a floor or wall.

Final Grade Calculator

Find the final exam score needed to hit a target grade.

GPA Calculator

Calculate grade point average from courses and credits.

Unit Price Calculator

Compare two package prices by unit cost.

Ohm's Law Calculator

Solve voltage, current, resistance, or power from known electrical values.

Resistor Color Code Calculator

Decode 4-band resistor color codes into resistance, tolerance, and value range.

Break-Even Calculator

Find the unit sales and revenue needed to cover fixed and variable costs.

Car Loan Calculator

Estimate auto loan payments with taxes, fees, down payment, and trade-in value.

Compound Interest Calculator

Calculate investment growth with recurring contributions and compound interest.

Credit Card Payoff Calculator

Estimate payoff time and interest from balance, APR, and monthly payment.

Debt-to-Income Calculator

Calculate front-end and back-end monthly debt-to-income ratios.

Discount Calculator

Calculate sale price, savings, tax, and final checkout price.

Emergency Fund Calculator

Calculate your emergency savings target, shortfall, and time to reach your goal.

Hourly to Salary Calculator

Convert hourly pay to weekly, monthly, and annual earnings.

Loan Calculator

Calculate payment, total interest, and payoff cost for a loan.

Money Calculators

Financial calculators for payments, savings, loans, and investment planning.

Mortgage Affordability Calculator

Estimate the maximum home price and loan amount from income, debts, DTI limits, rate, and taxes.

Mortgage Calculator

Calculate monthly mortgage payments with taxes, insurance, total interest, and a first-year breakdown.

Net Worth Calculator

Calculate total assets, liabilities, and net worth.

Payroll Calculator

Estimate net pay from gross pay, deductions, and tax rates.

Retirement Calculator

Estimate retirement savings growth, income needs, and savings gaps.

ROI Calculator

Calculate return on investment, gain, and annualized return.

Rule of 72 Calculator

Estimate how long an investment takes to double, or the rate needed to double it by a target year.

Sales Tax Calculator

Calculate sales tax and final purchase price from a custom rate.

Savings Goal Calculator

Find the monthly contribution needed to hit a goal, or how long a fixed contribution will take.

Tip Calculator

Calculate tip amount, total bill, and split cost per person.

BAC Calculator

Estimate blood alcohol concentration from body weight, drinks, and elapsed time.

BMI Calculator

Calculate body mass index using metric or imperial measurements.

Body Fat Calculator

Estimate body fat percentage with the U.S. Navy circumference method.

Calorie Calculator

Estimate calories needed for maintenance, weight loss, or weight gain.

Ideal Body Weight Calculator

Estimate ideal body weight and a healthy BMI weight range from height.

Macro Calculator

Split daily calories into protein, carbohydrates, and fat for common goals.

One-Rep Max Calculator

Estimate your one-rep max and training percentages from a recent lift.

Pregnancy Due Date Calculator

Estimate due date and pregnancy milestones from last menstrual period.

Running Pace Calculator

Calculate pace, speed, and equivalent race estimates.

Sleep Cycle Calculator

Find bedtimes or wake-up times that align with complete 90-minute sleep cycles.

Target Heart Rate Calculator

Estimate training heart-rate zones with the Karvonen method.

TDEE Calculator

Estimate basal metabolic rate and total daily energy expenditure.

Water Intake Calculator

Estimate daily water needs from body weight, activity, and climate.

Area Calculator

Calculate area for rectangles, triangles, circles, and trapezoids.

Fraction Calculator

Add, subtract, multiply, or divide fractions.

GCD & LCM Calculator

Find the greatest common divisor and least common multiple of two or more whole numbers.

Percentage Calculator

Calculate percentages, percentage-of values, percentage change, and adjusted values.

Permutations & Combinations Calculator

Calculate factorial, permutations (nPr), and combinations (nCr) for a set of items.

Prime Factorization Calculator

Break a whole number into its prime factors and count its divisors.

Quadratic Equation Solver

Solve ax² + bx + c = 0 for real or complex roots, vertex, and axis of symmetry.

Statistics Calculator

Calculate count, sum, mean, median, mode, range, variance, and standard deviation.

Triangle Solver

Solve a triangle's missing sides and angles from SSS, SAS, or ASA inputs.

Bandwidth Calculator

Estimate transfer time from file size and network throughput.

Subnet Calculator

Calculate subnet mask, network address, broadcast address, and usable IP range.

Dog Age Calculator

Estimate your dog's human-equivalent age based on size and breed.

Numeric Type Identifier

Identify which common .NET numeric types can hold a value.

Programmer Calculator

Perform integer arithmetic and bitwise operations in binary, decimal, or hexadecimal.

Age Calculator

Calculate exact age between two dates.

Business Days Calculator

Count business days between dates or add business days, with optional holiday exclusion for USA, UK, or Canada.

Days Between Calculator

Calculate calendar days, weeks, and approximate months between two dates.

Time Card Calculator

Calculate weekly hours, overtime, and gross pay.

World Clock

View current time across common time zones.

Gas Mileage Calculator

Calculate fuel economy, trip fuel cost, and cost per mile.

Trip Fuel Cost Calculator

Estimate fuel needed and trip cost from distance, efficiency, and fuel price.

Heat Index Calculator

Calculate perceived temperature when humidity is included.

Wind Chill Calculator

Calculate perceived temperature from cold air and wind speed.