A tool for the task.
Small jobs deserve a straightforward tool. Pick a category or search the desk. Every calculator, converter and editor runs in your browser.
Linux & the terminal
Read a mode, plan a schedule, check the command.
Files & storage
Make room for the files you want to keep.
Internet & networks
Understand a transfer, an address or the full bill.
Download time
Turn a file size and connection speed into a useful estimate.
06InternetStreaming data
Put viewing hours next to your monthly data allowance.
07InternetInternet plan costs
Compare the full bill after the promotion ends.
17InternetIPv4 subnets
See the network behind an address and prefix.
18InternetURL inspector
Take an address apart before following it.
Images
Get the dimensions and the file size right.
Data & text
Convert, format and compare what is in front of you.
Text cleaner
Tidy pasted text without sending it to a server.
19Data & textURL encoding
Encode one component without muddling the whole URL.
20Data & textBase64 text
Move between readable text and Base64, privately.
21Data & textJSON formatter
Give a dense JSON document some breathing room.
22Data & textCSV to JSON
Keep leading zeroes when a table becomes JSON.
23Data & textMarkdown tables
Turn spreadsheet cells into a readable Markdown table.
24Data & textText comparison
Find what changed between two short versions.
Privacy & checks
Work with files and passwords on your own device.
Recurring costs
Put the small charges on the same footing.
No tools match. Try another topic or a shorter search.
Understand the answer.
Each tool explains its method and limits. The guides go further, with worked examples and original sources.