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QKQuickKit日本語

Handy tools for everyday and technical tasks, ready in your browser

Count characters, convert dates and data, calculate networks, generate configuration files, and more. Find the tool you need, enter your input, check the result, and copy it in a few steps. About QuickKit ↓

Find a tool by name, alias, or task

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Not sure of a tool's name? Start from the kind of work you need to do.

17 more categories, including IPv6, Packet Analysis, and Linux, are in the full category list ↓

Featured tools

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A hand-picked mix of everyday and specialist tools that shows the range of QuickKit.

Character / Byte Counter

Count characters, bytes, words, and lines of text live in the browser, including emoji-aware counts.

LOCAL

Timezone Converter

Convert a wall-clock time from one IANA timezone to several others, with correct DST offsets, abbreviations, and day rollover.

LOCAL

Percentage Calculator

Work out a percentage of a value, what percent one number is of another, and the percentage increase or decrease between two numbers.

LOCAL

Password Generator

Generate passwords in the browser using a cryptographically secure random source and symbol sets chosen for compatibility with different kinds of websites.

LOCAL

JSON Formatter / Minifier

Pretty-print or minify JSON in the browser, with optional recursive key sorting.

LOCAL

ICMP Decoder

Decode ICMP type, code, checksum, rest-of-header bytes, and payload from hex.

LOCAL

cloud-init Generator

Generate a bounded #cloud-config document for hostname, packages, a user, groups, sudo, shell, and SSH public keys.

LOCAL

Example tasks

  • A pasted list repeats the same line several times

    Remove repeated lines while keeping the original order.

    Duplicate Line Remover →

  • Why does a 1 TB drive show around 931 GB in Windows?

    Drive makers count in decimal units, while Windows can show a 1024-based value labeled GB. Compare both kinds of units to see the difference.

    Data Size Converter →

  • When will this cron job run next?

    Explain a crontab line field by field and list its next run times.

    Cron Expression Parser →

  • Checking an SPF record for mistakes

    Paste the TXT record to see what each term means, the DNS-lookup count against its limit, and common misconfigurations. No DNS queries are made.

    SPF Record Parser →

Categories

About QuickKit

QuickKit brings together browser-based tools for quick conversions, calculations, data checks and analysis, configuration generation, and technical lookups. Alongside tools that turn your input into a result you can check and copy, it provides reference tables, such as HTTP status codes and port numbers, for finding information quickly. Every tool aims to let you finish the task in a few steps.

Where is your data processed?

LOCAL
Input and primary processing take place in your browser. LOCAL tools are designed not to send the input to QuickKit’s server.
SERVER
Processing uses a service operated by QuickKit. The tool may make the network requests needed for the operation described on its page.

Every tool shows one of these labels. This does not guarantee the safety of your whole environment, including your browser and extensions, so do not enter live production secrets; use dummy or masked data instead.

Privacy Policy →

Scope and limits of results

Analysis and configuration tools work within the scope described on each tool page and do not guarantee correctness for every product or environment. Before applying generated settings, commands, or analysis results to production, check them against the product’s official documentation and on the actual system.

Disclaimer →

Updates and contact

The About page covers who runs QuickKit, how it is developed, and the contact form. Release notes, current limitations, and usage notices are on the public information page.

About QuickKit and contact →QuickKit updates and notices