Calculators Hub

Access 177+ free calculators for finance, business, real estate, education, health, and more.

Lead Generation & Sales (32 Calculators)

Finance & Investment (35+ Calculators)

Weather & School

Snow Day Calculator

Estimate snow-day probability quickly.

School Closure Predictor

Predict closure risk from weather severity.

Student & Academic

Student Calculators Hub

GPA, weighted GPA, AP planning, final grade, and attendance calculators.

Calculate GPA from grade points and credits.

Weighted GPA Calculator

Estimate weighted GPA with regular, honors, and AP classes.

Final Grade Calculator

Find required final exam score for your target grade.

AP GPA Impact Calculator

Project GPA effect of adding AP coursework.

Home & Real Estate

Mortgage Payment Calculator

Existing mortgage calculator.

Mortgage Payoff Calculator

Estimate payoff time with extra payment.

Refinance Savings Calculator

Existing refinance calculator.

Home Affordability Calculator

Existing affordability calculator.

Rental Property ROI Calculator

Annual ROI based on rent and costs.

Airbnb Profit Calculator

Projected monthly Airbnb profit.

Income, Tax & Business

401(k) Calculator

Estimate retirement balance with match.

Estimate APR from fees and payment.

Average Return Calculator

Calculate geometric annual return.

Debt Consolidation Calculator

Compare old debt vs consolidated loan.

Debt Ratio Calculator

Compute debt-to-income and debt-to-asset ratios.

Depreciation Calculator

Straight-line depreciation and book value.

Payback Period Calculator

Estimate investment payback duration.

Discount Calculator

Calculate discounted price and savings.

Paycheck Calculator by State

Estimate net paycheck after taxes.

1099 Tax Calculator

Estimate contractor taxes.

Website Revenue Calculator

Estimate traffic-based website revenue.

AdSense Earnings Calculator

Estimate ad earnings.

SaaS MRR Calculator

Calculate monthly recurring revenue.

Auto, Travel & Time

Auto Lease Calculator

Estimate lease payment from cap cost and residual.

Distance Calculator

Find distance from speed and time.

Fuel Cost Calculator

Estimate trip fuel usage and cost.

Gas Mileage Calculator

Calculate MPG and L/100km equivalent.

Hours Calculator

Compute elapsed work hours with breaks.

Pace Calculator

Get running pace from time and distance.

Newly Added Calculators

Height Converter

Convert feet/inches to centimeters and meters.

Weight Converter

Convert kilograms to pounds and stones.

Data Storage Converter

Convert values between bytes, KB, MB, GB, and TB.

Cash Back Calculator

Estimate reward earnings and effective discount.

How Long to Save Calculator

Estimate time to reach your savings goal.

How Long Will My Money Last

Estimate how long funds last with withdrawals.

Million Billion Converter

Convert among million, billion, and trillion.

Count total cash from notes and coins.

Money Market Account Calculator

Project growth with APY and monthly deposits.

Price per Sq Ft Calculator

Compute cost per square foot and square meter.

Time and a Half Calculator

Calculate overtime pay at 1.5x.

Percentage Change Calculator

Find increase or decrease in percent.

Chronological Age Calculator

Calculate exact age in years, months, and days.

Age Difference Calculator

Find date-to-date difference including total days.

Percentage Calculator

Find X% of Y, what % X is of Y, and more.

Percentage Increase Calculator

Calculate how much a value has grown in %.

Percentage Decrease Calculator

Calculate how much a value has dropped in %.

Date Difference Calculator

Find days, weeks, months between two dates.

Time Duration Calculator

Calculate hours and minutes between two times.

Calculate tip amount and split the bill per person.

Health & Nutrition

Calorie Calculator

Find your daily calorie target for weight loss or gain.

Calculate Basal Metabolic Rate using Mifflin-St Jeor.

Calorie Deficit Calculator

Plan a calorie deficit for fat loss.

Macro Calculator

Find your ideal protein, carb, and fat targets.

Calculate Body Mass Index from height and weight.

Ovulation Calculator

Estimate fertile window and ovulation date.

Pregnancy Due Date Calculator

Find your estimated due date from LMP.

Indian Diet Calorie Calculator

Estimate calories for Indian meals.

Energy & Sustainability

Electricity Bill Calculator

Estimate monthly electricity cost by appliance.

EV Charging Cost Calculator

Estimate per-charge EV electricity cost.

Gas vs Electric Savings Calculator

Compare annual driving cost.

Solar Savings Calculator

Estimate annual solar savings.

Home Improvement

Square Footage Calculator

Calculate room or property area in sq ft.

Roofing Calculator

Estimate shingles and squares for any roof.

Paint Calculator

Find how many gallons of paint your room needs.

Concrete Calculator

Calculate cubic yards and bags for slabs/footings.

Mulch Calculator

Estimate cubic yards of mulch for garden beds.

Fence Calculator

Estimate posts, panels, and fencing cost.

Cloud Cost

AWS Lambda Cost Calculator

Estimate Lambda request and compute cost.

CloudFront Cost Calculator

Estimate CloudFront bandwidth and request cost.

Azure Cost Calculator

Estimate Azure VM, storage, and egress costs.

GCP Cost Calculator

Estimate Google Cloud Compute Engine costs.

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