Find a calculator.
Useful tools for the questions that come up every day.
Image File Size Estimator
1920 × 1080 at 24 bits per pixel requires 6,220,800 bytes, or 6.2208 MB.
Open calculatorImage Print Size Calculator
Convert pixel dimensions to a print size, or find the pixels needed for a chosen print density.
Open calculatorInvestment Return & CAGR Calculator
Measure total growth and the constant annual rate equivalent to an investment’s change in value.
Open calculatorLength Converter
10 km is approximately 6.213712 miles.
Open calculatorLoan Calculator
Estimate monthly payments and the total cost of a fixed-rate loan.
Open calculatorLoan Comparison Calculator
Compare two fixed-rate loans using monthly payment, total interest and total repayment.
Open calculatorLog Storage Calculator
Estimate retained log storage from daily volume, retention and measured compression.
Open calculatorMarkup Calculator
Set a selling price from cost and a markup, or find the markup in an existing price.
Open calculatorMedian Calculator
For 1, 3, 7, 9 the median is (3 + 7) / 2 = 5.
Open calculatorMode Calculator
For 1, 2, 2, 3, 3 the modes are 2 and 3, each with frequency 2.
Open calculatorMortgage Amortization Calculator
See how each monthly mortgage payment reduces principal and pays interest.
Open calculatorMortgage Calculator
Estimate a home loan payment from a property price, down payment and fixed interest rate.
Open calculatorNet Profit Calculator
Build a simple profit bridge from revenue through direct costs, operating expenses and taxes.
Open calculatorPace Calculator
5 km in 30 minutes gives a 6 min/km pace and a 10 km/h average speed.
Open calculatorPaint Calculator
Four walls 4 m wide and 2.5 m tall have 40 m². Two coats at 10 m²/L need 8 L before exclusions.
Open calculatorPercentage Calculator
Find percentages, compare values, and calculate increases or decreases.
Open calculatorPercentage Change Calculator
Measure a directional change from a positive starting value to a new value.
Open calculatorPercentage Difference Calculator
Compare two non-negative values when neither is a starting baseline.
Open calculatorPercentile Calculator
Find a percentile using an explicitly defined linear interpolation method.
Open calculatorPHP-FPM Max Children Estimator
Estimate a memory-based starting point for PHP-FPM’s maximum worker count.
Open calculatorPower Converter
1 kW = 1,000 W; 1 mechanical hp is approximately 745.699872 W.
Open calculatorPresent & Future Value Calculator
Translate a single amount between today and a future period using a consistent discount or growth rate.
Open calculatorPressure Converter
1 standard atmosphere = 101,325 Pa = 760 Torr.
Open calculatorProfit Margin Calculator
See profit, margin, and markup—or find your target selling price.
Open calculatorPopular calculators
Age Calculator
Find your age in years, months, and days on any given date.
Open calculatorAverage Calculator
Find the arithmetic mean of a list of numbers, with the sum and range shown alongside it.
Open calculatorBMI Calculator
Calculate adult BMI using metric or imperial height and weight.
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