Everyday Calculators

Gas mileage, speed, downloads, and daily calculations.

MPG Calculator — Miles Per Gallon
Enter miles driven and gallons used to calculate MPG and fuel efficiency in all units.
Speed, Distance and Time Calculator
Enter any two of speed, distance, or time to calculate the third.
Download Speed Calculator — Time to Download
Enter file size (MB) and internet speed (Mbps) to calculate download time.
Aspect Ratio Calculator
Enter width and height to get the aspect ratio, decimal ratio, and scaled dimensions.
Electricity Cost Calculator
Enter appliance wattage, hours per day, and kWh rate to calculate daily and monthly electricity cost.
Reading Time Calculator
Enter word count (or word-count estimate) and reading speed to get reading time.