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Age Calculator

Calculate your exact age in years, months, days, and seconds.

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High School GPA Calculator

Calculate your weighted and unweighted High School GPA instantly.

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Cumulative GPA Calculator

Easily find your cumulative college or high school GPA across semesters.

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Percent Error Calculator

Find the percentage error between an estimated and exact value.

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Percentage Decrease Calculator

Calculate the exact percentage decrease between two numbers.

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Mixed Number Calculator

Add, subtract, multiply, and divide mixed numbers with ease.

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Mixed Fraction Converter

Convert mixed fractions to improper fractions and decimals.

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Simplification Calculator

Simplify fractions and ratios down to their lowest possible terms.

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Antiderivative Calculator

Find the indefinite integral of polynomial functions step-by-step.

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Pythagorean Theorem

Calculate the missing hypotenuse or side of any right triangle.

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Inequality Calculator

Solve linear inequalities and learn the rules of negative division.

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RREF Calculator

Convert a 3x4 augmented matrix into Reduced Row Echelon Form.

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ACT Score Calculator

Convert your practice test raw scores into a composite ACT score.

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AP Lang Score Predictor

Predict your 1-5 AP English Language score using your essay and MC performance.

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AP Lang Target Calculator

Calculate exactly how many multiple choice questions you need for a 5.

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CPM Calculator

Calculate Cost Per Mille, Impressions, and Total Campaign Cost.

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Rent Affordability Calculator

Determine how much rent you can safely afford based on your income.

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Salary Increase Calculator

Calculate your new salary, raise percentage, and pay difference.

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Cap Rate Calculator

Evaluate real estate profitability with the Capitalization Rate formula.

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Mortgage Recast Calculator

See how a lump sum payment lowers your monthly mortgage payment.

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Prorated Rent Calculator

Calculate partial month rent for move-ins or move-outs.

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Coast FIRE Calculator

Find out when you can stop saving and let compounding fund your retirement.

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Bench Press Calculator

Estimate your One Rep Max (1RM) based on reps and weight lifted.

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FFMI Calculator

Calculate Fat Free Mass Index to track your natural muscle limits.

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Body Type Calculator

Find your body shape or somatotype using standard measurements.

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PFT Calculator

Calculate your military or law enforcement Physical Fitness Test score.

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Puppy Weight Calculator

Estimate your puppy’s adult size based on breed and current weight.

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Concrete Calculator

Find how many bags and cubic yards of concrete you need for a project.

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Mulch Calculator

Calculate the yards or bags of mulch required for your garden.

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Asphalt Calculator

Estimate tons of asphalt or bitumen needed for paving jobs.

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Board Foot Calculator

Measure lumber volume and cost using the Board Feet formula.

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Drywall Calculator

Estimate how many drywall sheets and screws you need for a room.

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Fence Calculator

Calculate pickets, posts, and rails required to fence your yard.

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Roof Pitch Calculator

Determine the pitch, slope, and angle of a roof structure.

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Topsoil Calculator

Estimate bags or cubic yards of dirt/topsoil for your lawn.

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Stone Calculator

Calculate tons and yards of gravel, stone, or rock for landscaping.

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Pool Volume Calculator

Find the exact gallon capacity of your swimming pool.

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Conduit Fill Calculator

Calculate NEC maximum wire capacity for various conduit types.

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Voltage Drop Calculator

Calculate electrical voltage drop across copper or aluminum wires.