PC Hardware & Storage Tools
10 free calculators for storage, displays, peripherals, and power
PC hardware tools help you make sense of the numbers behind your setup — how much usable space a drive partition really has, how long a download will take on your connection, how many watts your build needs, or what DPI your mouse is actually running at. Every calculator below runs entirely in your browser, so your specs and settings never leave your device.
🖥️ All PC Hardware Tools
Pick a tool below — every calculator opens instantly, no sign-up required.
Drive Partition Space Calculator
Work out how much usable space each partition leaves on a drive after formatting overhead.
Open Tool →Download Time Estimator
Estimate how long a file will take to download based on its size and your connection speed.
Open Tool →RAID Storage Calculator
Calculate usable capacity and redundancy for RAID 0, 1, 5, 6, and 10 arrays.
Open Tool →Monitor PPI / DPI Calculator
Find the pixel density of any screen from its resolution and diagonal size.
Open Tool →RAM Bandwidth Calculator
Estimate theoretical memory bandwidth from speed, channels, and bus width.
Open Tool →PSU Wattage Estimator
Get a recommended power supply wattage based on your CPU, GPU, and other components.
Open Tool →Storage Unit Converter
Convert between bytes, KB, MB, GB, TB, and their binary (KiB, MiB, GiB) equivalents.
Open Tool →Mouse DPI Converter
Convert sensitivity between mouse DPI settings and different games or CM/360°.
Open Tool →Resolution Aspect Ratio
Find the aspect ratio of any resolution, or calculate a missing width or height.
Open Tool →Data Transfer Converter
Convert transfer speeds between bps, Kbps, Mbps, Gbps, and bytes per second.
Open Tool →No PC tools match your search. Try a different word.
Why Use Browser-Based PC Hardware Tools?
Traditional hardware calculators often live inside downloadable software or spreadsheets that need to be kept up to date manually. EverydayTools' PC hardware utilities run entirely as client-side web apps, so there's nothing to install and nothing that can go out of date behind a paywall.
Because every calculation happens locally in your browser using plain JavaScript, none of your hardware specs, drive sizes, or build details are ever sent to a server. That makes these tools a safe, fast option whether you're planning a new PC build, sizing a RAID array, or double-checking a download estimate before it starts.
Frequently Asked Questions
Yes, every tool in this hub is completely free, with no sign-up and no usage limits.
Most tools just need basic figures like drive size, resolution, or component wattage — values you can usually find on the product page or spec sheet.
It gives a solid starting estimate based on typical component draw, but we recommend adding headroom and checking your specific parts' rated power for a final decision.
The Storage Unit Converter handles file and drive sizes (like GB and TB), while the Data Transfer Converter handles speeds (like Mbps and MB/s).
Yes, every calculator in this hub is fully responsive and works on phones, tablets, and desktops.
No. All calculations run locally in your browser, and nothing you type is sent to our servers.