Calculators
Tech & Internet
Download times, storage, subnets, electricity and printing. · 12 tools
Practical numbers for devices and networks: how long a download takes at your speed, how much data streaming uses per month, what a device costs to run per year, how a subnet splits, and how strong a password really is.
3D Print Cost CalculatorFree 3D print cost calculator: filament (by grams or length), electricity, printer depreciAspect Ratio CalculatorCalculate the missing dimension of an image or video while keeping the aspect ratio.Battery Life CalculatorEstimate a device's battery life from battery capacity (mAh) and current draw.Cloud Storage CalculatorCalculate how many photos, songs or videos fit in your storage based on average file size.Download Time CalculatorCalculate how long a file download takes based on file size and your connection speed.Electricity CalculatorCalculate home appliance electricity consumption and estimated bill.Password Strength CalculatorEstimate password strength (entropy in bits) and time to crack from length and characte…Printing Cost CalculatorCalculate the total cost of printing from page count, paper and ink/toner cost per page.Screen PPI CalculatorCalculate a screen's pixel density (PPI) from resolution and diagonal size.Solar Panel CalculatorEstimate a solar panel system's annual electricity output and monetary savings from sys…Streaming Data CalculatorCalculate how much mobile data video streaming uses based on watch time and quality.Subnet CalculatorCalculate the number of addresses and usable hosts in an IPv4 subnet from the CIDR prefix.