A little clarity for everyday tech
Practical Tools for Everyday Technology.
Calculate, check and troubleshoot with practical technology tools. Clear inputs, useful results and explanations you can follow.
Quick Download Estimate
10 GB × 8000 ÷ 100 Mbps
An ideal transfer at a constant entered rate. Open the full tool to include effective speed.
Open full calculator01 / Tools
Start with a Useful Tool
A few everyday tasks, ready when you need them.
Internet & Networking
Download Time Calculator
Estimate a file's download duration from its size and transfer speed. Match the displayed units, then compare the theoretical result with a rate you expect to sustain.
Internet & Networking
Mbps to MB/s Converter
Convert megabits per second to megabytes per second, or reverse the calculation. Use the result to compare an internet rate with a file-transfer rate without mixing bits and bytes.
PC & Devices
Keyboard Tester
See the keyboard events received by this browser. The event log shows the reported key, physical code, location and repeat flag, with separate held and released states.
Audio & Video
Video File Size Calculator
Estimate video storage from average video bitrate, audio bitrate and duration. Add a separate percentage allowance and compare decimal MB/GB with binary MiB/GiB. The calculator uses entered values; it does not inspect, compress or upload a video.
Internet & Networking
What Is My IP?
See the public address observed for a request from this browser to ipify. Start the check yourself, copy the result and compare it after changing a connection or VPN.
Web & Apps
QR Code Scanner
Read a QR code from a local image or a camera preview. Decoding runs in the browser without uploading images or frames. The result appears as plain text; links are never opened automatically.
02 / Categories
Find Your Kind of Toolkit
Browse by the problem you are trying to solve.
03 / Your next task
What Are You Working On?
Plan a File Transfer
Compare time, speed and file size before a download, upload or backup.
Check Your Setup
Work through input, audio and connection checks with clear limits.
Make Something Useful
Create a Twitch panel, shortlist a name or inspect a local file.
Methods You Can Inspect
Read the formula, worked example and technical references beside each tool.
Permission Stays in Your Hands
Microphone, camera and network checks start with your action and consent.
Limits Stated Up Front
Estimates, browser observations and external records are clearly distinguished.
04 / Guides
A Better Answer Starts with Understanding
Step-by-step guides explain the units, evidence and tradeoffs behind the tools.
GB vs GiB and Mbps vs MB/s: Data Units Explained
A capacity and a transfer speed answer different questions. Read the unit before comparing values: GB describes an amount of data, while Mbps describes how quickly bits can move.
Why a Download Differs from a Speed Test
Compare units, the destination and the same task before changing hardware or the internet plan.
Public IP, Local Addresses and Registration Records
Collect comparable address observations and read their scope before changing a network.
Check File Sizes and EXIF Locally Before Sharing
Check the operation, size limit and exact file before sharing a photo or attachment.
Read Digital Microphone Levels Before Choosing Gain
Use the meter's definition and measurement stage before calculating a gain change. Digital levels describe samples, not room sound pressure.
Design Readable Twitch Panels and Verify the Exported PNG
Plan panel labels, spacing, color and exports with checks that match the actual image maker.
Can I Use These Tools Without an Account?
Yes. The current tools work without an account. Some use only your browser; network lookups need a connection and explain where the request goes.
Does a Result Describe My Actual Hardware?
Calculators model your inputs. Browser tests observe only the signals available to the browser. Read the method and limits before treating a result as a device measurement.
Which Edition Should I Choose?
Choose English, UK English, Spanish, Brazilian Portuguese or French. The calculation models are shared; field labels and units follow the selected edition.