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Every calculator, tool, hardware page, guide and comparison on ComputingSkill in one place — 58 free resources and counting. Search for something specific, jump to a category, or browse the featured picks below.
Featured Articles
A hand-picked starting point spanning calculators, hardware guides and comparisons.
PC Hardware Calculators
PC Bottleneck Calculator
Check whether your CPU or GPU is holding back your PC's performance, with results broken down by 1080p, 1440p, and 4K.
PC Hardware Calculators
PSU Calculator
Estimate the power supply wattage your PC build needs, with safe headroom for efficiency loss and GPU power spikes.
PC Hardware Calculators
RAM Calculator
Find out how much RAM you actually need based on what you use your PC for, from light browsing to gaming and…
PC Hardware Calculators
FPS Calculator
Get a spec-based frames-per-second estimate for a CPU and GPU pairing at your chosen resolution and settings.
Guides
How Much RAM Do You Need for Gaming and Streaming at the Same Time?
How much RAM you actually need to game and live stream at once, with a real breakdown of where your memory goes…
PC Hardware Calculators
GPU VRAM Calculator
Estimate how much GPU VRAM you need for your resolution, settings, and ray tracing preferences before you buy a graphics card.
Comparisons
DDR4 vs DDR5
DDR4 vs DDR5 RAM compared honestly — bandwidth, latency, price, platform compatibility, and whether DDR5 is worth it today.
Guides
CPU Bottleneck Explained
What a CPU bottleneck really is, when it happens, and how to tell your CPU is holding back your GPU instead of…
Storage Tools
SSD Lifespan Calculator
Estimate how many years your SSD should last based on its TBW rating and your daily write volume.
Guides
How to Upgrade a Gaming PC
A step-by-step framework for upgrading a gaming PC: diagnosing bottlenecks, the right upgrade order, and compatibility checks.
PC Hardware Calculators
Free, instant calculators for every stage of building, buying or upgrading a PC.
CPU Performance CalculatorEstimate a CPU's relative performance tier from its cores, clock speeds, and generation to see where it stands… CPU Power Consumption CalculatorEstimate how much power your CPU actually draws at idle, typical, and full load compared to its rated… CPU vs GPU CalculatorCompare a specific CPU and GPU pairing to see which one is likely to hold the other back… FPS CalculatorGet a spec-based frames-per-second estimate for a CPU and GPU pairing at your chosen resolution and settings. GPU Performance CalculatorEstimate a graphics card's relative performance tier from its cores, clock speed, and architecture to compare GPUs quickly. GPU Power Consumption CalculatorEstimate how much power your graphics card actually draws at idle, typical gaming, and full load compared to… GPU VRAM CalculatorEstimate how much GPU VRAM you need for your resolution, settings, and ray tracing preferences before you buy… PC Bottleneck CalculatorCheck whether your CPU or GPU is holding back your PC's performance, with results broken down by 1080p,… PC Build Cost CalculatorEstimate the total cost of your PC build and see how your budget typically splits across components. PC Compatibility CheckerCheck CPU socket, RAM type, GPU clearance, and PSU headroom compatibility before you buy or build. PC Cooling CalculatorEstimate how much cooling your CPU and GPU combined heat output needs, and whether air or AIO liquid… PC Power Consumption CalculatorEstimate your gaming PC's power draw and rough electricity cost, at idle and under load, from your actual… PC Upgrade CalculatorFind out whether upgrading your CPU, GPU, RAM, or storage will actually help most, based on your current… PSU CalculatorEstimate the power supply wattage your PC build needs, with safe headroom for efficiency loss and GPU power… RAM CalculatorFind out how much RAM you actually need based on what you use your PC for, from light…
Storage Tools
Converters and estimators for storage capacity, drive lifespan and file sizes.
Data Storage ConverterConvert between bits, bytes, KB, MB, GB, TB and PB, and understand decimal vs binary storage units. Drive Space CalculatorCheck whether a game install, software update, or large file copy will actually fit before you start it. SSD Lifespan CalculatorEstimate how many years your SSD should last based on its TBW rating and your daily write volume. SSD TBW CalculatorUnderstand what a drive's TBW rating actually means and use it to compare SSD endurance before you buy. Storage CalculatorEstimate how much drive space a set of files or a media library needs, and whether it fits…
Internet Tools
Converters and calculators for internet speed, bandwidth and transfer times.
Bandwidth CalculatorCalculate the bandwidth needed to move a given amount of data in a target amount of time, for… Download Time CalculatorEstimate how long a download will take based on file size and connection speed, with real-world overhead factored… File Transfer Time CalculatorEstimate transfer time for files over LAN, Wi-Fi, USB, or Ethernet, not just internet downloads. Internet Data Usage CalculatorEstimate your monthly internet data usage from streaming, browsing, gaming, and video calls to stay under a data… MB/s to Mbps ConverterConvert MB/s to Mbps quickly, useful for comparing a measured transfer speed against your advertised plan. Mbps to MB/s ConverterConvert Mbps to MB/s instantly and understand why ISPs advertise speed in megabits, not megabytes. Upload Time CalculatorEstimate how long it will take to upload a file or backup based on your upload speed, which…
Display Tools
Calculators for screen resolution, pixel density, aspect ratio and refresh rate.
Aspect Ratio CalculatorSimplify any resolution to its aspect ratio and identify common names like 16:9, 21:9, or 4:3 instantly. DPI CalculatorCalculate print resolution (dots per inch) from image pixel dimensions and print size to check if a photo… Monitor Size CalculatorWork out a monitor's real width and height before buying, so it fits your desk and suits your… Pixel Density CalculatorCheck an image or display's pixel density against "retina-like" sharpness thresholds for photos and fine detail. PPI CalculatorCalculate a screen's pixels per inch from its diagonal size and resolution, and see how PPI differs from… Refresh Rate CalculatorConvert monitor refresh rate (Hz) to frame time in milliseconds and see why higher Hz reduces input lag. Resolution CalculatorLook up a resolution's standard name (720p, 1080p, 1440p, 4K), megapixel count, and aspect ratio in one step. Screen Size CalculatorCalculate a screen's physical width and height in inches or cm from its diagonal size and aspect ratio.
Hardware
Plain-English reference pages covering every major PC component.
CPU Cooler: What It Is & How to Choose OneLearn how CPU coolers work, air vs liquid cooling differences, and how to pick the right cooler for… CPU: What It Is & How to Choose OneLearn what a CPU does, which specs actually matter, and how to pick the right processor for gaming,… GPU: What It Is & How to Choose OneUnderstand what a graphics card actually does, which specs matter most, and how to pick the right GPU… HDD: What It Is & When It Still Makes SenseLearn how hard drives work, how they compare to SSDs, and when an HDD is still the smart… Motherboard: What It Is & How to Choose OneLearn what a motherboard does, which specs and chipsets matter, and how to pick the right board for… PC Case: What It Is & How to Choose OneLearn how PC cases affect airflow, compatibility, and noise, and how to pick the right case for your… PSU (Power Supply): What It Is & How to Choose OneLearn what a power supply does, which ratings actually matter, and how to pick the right wattage and… RAM: What It Is & How Much You NeedLearn what RAM does, how much you actually need for gaming or work, and which memory specs matter… SSD: What It Is & How to Choose OneLearn how SSDs work, the difference between NVMe and SATA, and how to choose the right drive for… VRAM: What It Is & Why It MattersLearn what VRAM does, why it's different from system RAM, and how much video memory you actually need…
Guides
In-depth, practical guides for building, upgrading and troubleshooting a PC.
CPU Bottleneck ExplainedWhat a CPU bottleneck really is, when it happens, and how to tell your CPU is holding back… GPU Bottleneck ExplainedWhat a GPU bottleneck really is, why it's common at high resolutions, and how it differs from a… How Much RAM Do You Need for Gaming and Streaming at the Same Time?How much RAM you actually need to game and live stream at once, with a real breakdown of… How Much RAM Do I Need?How much RAM you actually need for browsing, gaming, streaming, content creation, and dev work, with concrete GB… How Much VRAM Do I Need?How much GPU VRAM you need by resolution, settings, and ray tracing, with real GPU examples and concrete… How to Choose a Gaming GPUA balanced, practical framework for choosing a gaming GPU by budget, resolution, VRAM, and power needs, AMD vs… How to Choose a PSUHow to choose a PC power supply: wattage headroom, 80+ efficiency ratings, modular cables, and modern GPU connectors. How to Improve FPS on Your PCPractical software and hardware fixes to improve FPS on your gaming PC, from graphics settings to component upgrades. How to Upgrade a Gaming PCA step-by-step framework for upgrading a gaming PC: diagnosing bottlenecks, the right upgrade order, and compatibility checks.
Comparisons
Side-by-side breakdowns to help you choose between two technologies or formats.
1080p vs 1440p vs 4K1080p vs 1440p vs 4K compared honestly — visual difference, GPU power needed, ideal monitor size, and which… DDR4 vs DDR5DDR4 vs DDR5 RAM compared honestly — bandwidth, latency, price, platform compatibility, and whether DDR5 is worth it… NVMe vs SATANVMe vs SATA SSDs compared honestly — real-world speed differences, where they actually matter, and compatibility basics like… SSD vs HDDA practical, technical comparison of SSDs and HDDs covering speed, price per GB, durability, and which one actually…