EMI /ローン返済計算機月次ローンのEMI（均等割賦払い）を計算し、完全な返済スケジュールを表示し、繰り上げ返済の節約を分析し、ローンのオファーを並べて比較します。元利均等返済方式と元金均等返済方式の両方をサポートします。すべての計算はブラウザで即座に行われます。 使用方法ローンの金額、年利、返済期間（月または年）を入力します。計算方法を選択します–元利均等返済方式（ほとんどの銀行で標準）または元金均等返済方式。月次EMI、総利息、総返済額が即座に計算されます。完全な月ごとの返済スケジュールを表示するには、下にスクロールします。繰り上げ返済セクションを使用して、追加の支払いが総利息と返済期間をどのように削減するかを確認します。 2つのローンの比較...
ツールを試す »三角形と三角法計算機3つの既知の値から任意の三角形を解きます–任意の有効な組み合わせ（SSS、SAS、ASA、AAS、SSA）で辺と角度を入力すると、すべての不足している測定値、面積、周囲長、高さ、内接円半径、外接円半径、および三角形の分類が即座に得られます。段階的なソリューション、SVG図、および特別な直角三角形のクイックリファレンスが含まれています。 使用方法少なくとも3つの既知の値（辺および/または角度）を入力します。少なくとも1つの辺が必要です。計算機は構成（SSS、SAS、ASA、AAS、またはSSA）を自動検出し、余弦の法則、正弦の法則、およびピタゴラスの定理を使用してすべての未知数を解きます。角度単位の度とラジアンを切り替えます。下にスクロールして表示...
ツールを試す »Routing Number Generator Generate valid US ABA routing numbers for testing and development. Each generated number follows the correct 9-digit format with a properly calculated check digit, making them suitable for validating payment processing systems, testing bank integrations, and populating test databases. How to Use Set the number of routing numbers to generate (1–50), optionally select a specific Federal Reserve District or leave it on Random. Click Generate to create valid routing numbers. Each number passes the ABA checksum algorithm. Copy results to your clipboard or download as a text file. Features Valid Check Digits – Every routing number includes a correctly calculated check digit using the ABA weighted algorithm ...
ツールを試す »Random Bitcoin Address Generator Generate random Bitcoin wallet addresses for testing and development. Create properly formatted addresses in all four major Bitcoin address formats — Legacy (P2PKH), Script Hash (P2SH), SegWit (Bech32), and Taproot (Bech32m). Ideal for testing payment processing integrations, populating test databases, and validating address format checks. How to Use Set the number of addresses to generate (1–50), select an address type or leave it on Random for a mix of all formats. Click Generate to create your Bitcoin address list. Copy results to your clipboard or download as a text file. Features 4 Address Formats – Legacy (starts with 1), P2SH (starts with 3), SegWit Bech32 (starts ...
ツールを試す »URL Opener Open multiple URLs at once by pasting a list and clicking a single button. Instead of opening links one by one, paste your entire URL list and let this tool open them all in new browser tabs simultaneously. Ideal for QA testing, checking multiple pages, reviewing search results, or opening a batch of bookmarks. How to Use Paste your URLs into the text area (one per line), optionally set a delay between tab opens to avoid popup blockers, and click Open All. Each URL opens in a new browser tab. The tool auto-adds https:// to URLs missing a protocol and reports how many tabs were successfully opened. Features ...
ツールを試す »Open Graph Checker Inspect and preview the Open Graph meta tags on any URL to see exactly how your page will appear when shared on social media. This tool fetches the page, extracts all OG and Twitter Card meta tags, and shows you a visual preview of the social share card — plus flags any missing tags that could hurt your social media presence. How to Use Enter any URL and click Check. The tool fetches the page server-side and extracts all Open Graph and Twitter Card meta tags. You’ll see a social media preview card, a complete list of all OG and Twitter tags found, any missing important tags, ...
ツールを試す »Redirect Checker Trace the full redirect chain for any URL and see every hop along the way. This tool follows redirects from start to finish, showing the HTTP status code, URL, and response time at each step. Essential for debugging redirect chains, verifying SEO migrations, and finding redirect loops before they cause problems. How to Use Enter any URL and click Check. The tool follows the redirect chain server-side, recording each hop with its HTTP status code, destination URL, and response time. The results display the complete chain from the original URL to the final destination, making it easy to spot unnecessary redirects, loops, or incorrect status codes. Features Full ...
ツールを試す »HEX to Text Converter Convert hexadecimal strings back to readable text instantly. Paste hex values in any common format — with spaces, dashes, 0x prefixes, or raw hex — and get the decoded text output. The reverse of our Text to Hex converter, perfect for decoding hex dumps, debugging network data, and reading encoded strings. How to Use Paste your hexadecimal string into the input area. Select the format or leave it on Auto-detect to let the tool figure out the separator. Click Convert to decode the hex to readable text. Copy or download the result. Features Auto-Format Detection – Automatically detects hex format: spaced (48 65 6C), raw (48656C), ...
ツールを試す »SQL Escape Escape special characters in strings for safe use in SQL queries. Supports multiple SQL dialects including MySQL, PostgreSQL, SQL Server, and SQLite. Prevents SQL injection by properly escaping quotes, backslashes, and other dangerous characters before they reach your database. How to Use Paste your raw string into the input area, select your SQL dialect, and click Escape. The tool applies dialect-specific escaping rules and outputs the safe string. Switch to Unescape mode to reverse the process and recover the original text from an escaped string. Features 5 SQL Dialects – Generic/ANSI SQL, MySQL, PostgreSQL, SQL Server, and SQLite with dialect-specific escaping rules Escape & Unescape – Two-way conversion: ...
ツールを試す »JSON Escape and Unescape Escape and unescape special characters in JSON strings. Convert raw text with quotes, newlines, tabs, and Unicode characters into properly escaped JSON string values, or reverse the process to recover the original text from escaped JSON. Essential for working with APIs, configuration files, and any JSON data handling. How to Use Paste your text into the input area and select Escape or Unescape mode. Click Convert to process. In Escape mode, special characters are converted to JSON escape sequences. In Unescape mode, escape sequences are converted back to their original characters. Features Full JSON Escape Sequences – Handles all standard JSON escapes: \”, \\, \/, \b, ...
ツールを試す »JavaScript Escape and Unescape Escape and unescape special characters in JavaScript string literals. Convert raw text with quotes, newlines, tabs, and Unicode into properly escaped JavaScript strings, or reverse the process to recover original text. Choose between single-quote and double-quote wrapping styles. How to Use Paste your text into the input area, select Escape or Unescape mode, choose your preferred quote style (single or double), and click Convert. The tool applies JavaScript-specific escaping rules and outputs the result ready to paste into your code. Features Full JS Escape Sequences – Handles \’, \”, \\, \n, \r, \t, \b, \f, \v, \0, \uXXXX, \xHH, and ES6 \u{XXXXX} Escape & Unescape – ...
ツールを試す »PHP Array to JSON Converter Convert PHP array syntax to valid JSON format instantly. Paste PHP arrays using either the classic array() or modern [] short syntax, and get properly formatted JSON output. Handles nested arrays, associative key-value pairs, PHP constants (true, false, null), and trailing commas. How to Use Paste your PHP array code into the input area, select your preferred indentation style, and click Convert. The tool parses the PHP array syntax and outputs equivalent JSON. Choose between 2 spaces, 4 spaces, tabs, or minified output. Features Both Array Syntaxes – Supports classic array() and modern [] short array syntax Nested Arrays – Handles deeply nested arrays and ...
ツールを試す »Cron Next-Run Time Calculator Enter a cron expression and instantly see when it will fire next. This tool parses standard 5-field cron expressions, calculates the next scheduled run times, generates a human-readable description, and shows a countdown to the next execution — all in your local timezone and UTC. How to Use Type or paste a cron expression (e.g., 0 9 * * 1 for every Monday at 9 AM), select how many upcoming runs to display (5, 10, or 20), and click Calculate. The tool shows a human-readable description, countdown to the next run, and a complete schedule of upcoming executions. Features Next N Runs – Calculate the next ...
ツールを試す »Color Contrast Grid Generator Enter your brand or design system colors and generate a complete WCAG contrast matrix showing the contrast ratio for every possible foreground/background combination. Instantly see which color pairs pass AA, AAA, or fail accessibility requirements — essential for building accessible design systems and style guides. How to Use Enter hex colors one per line (with optional labels like “Primary #3B82F6”), or select a preset palette. Click Generate Grid to create the contrast matrix. Each cell shows the contrast ratio with the actual foreground color on the actual background, color-coded by WCAG compliance level. Features N×N Contrast Matrix – Every foreground/background combination tested and displayed in a ...
ツールを試す »Base85 / Ascii85 Encoder & Decoder Encode text to Base85 or decode Base85-encoded data back to its original form. Base85 encoding converts 4 bytes of binary data into 5 printable ASCII characters, offering better space efficiency than Base64 (25% overhead vs 33%). This tool supports three major Base85 variants used across different applications. How to Use Select your mode (Encode or Decode), choose a Base85 variant, paste your input text or encoded data, and click Convert. The tool processes everything in your browser and displays the result along with input/output size comparison. Features Bidirectional – Encode text to Base85 or decode Base85 back to original text Three Variants – Ascii85 ...
ツールを試す »Credit Card BIN / IIN Lookup Enter the first 6-8 digits of any credit or debit card number to identify the card network, issuing bank, country of issuance, card type, and category. This tool also includes Luhn algorithm validation to check if a full card number has a valid format. Everything runs in your browser — no data is transmitted to any server. How to Use Enter the first 6-8 digits of a card number (the BIN or IIN) and click Lookup. The tool identifies the card network, issuing bank, country, and card type from a bundled database. Optionally, enter a full card number in the second field for Luhn ...
ツールを試す »Twitter / X 文字数カウンター Twitter/X の正確な文字数カウントルールでツイートを作成およびカウントします。このツールは、Twitter/X が使用するのと同じアルゴリズムを適用します — URL は長さに関係なく常に 23 文字としてカウントされ、絵文字は重み付けされたカウントを持ちます。リアルタイムのフィードバックにより、色分けされた警告とともに残りの文字数が表示され、スレッドモードは長いコンテンツを複数のツイートに自動的に分割します。 使用方法 入力エリアにツイートテキストを入力または貼り付けます。カウンターはリアルタイムで更新され、280文字の制限のうち使用済みおよび残りの文字数を表示します。URL はハイライトされ、それぞれ 23 文字としてカウントされます。制限を超えると、カウンターが赤くなり、スレッドモードがアクティブになって...
ツールを試す »Hex Dump Viewer View any text or file as a hex dump in the classic xxd format — offset address, grouped hex bytes, and printable ASCII characters side by side. Upload a binary file or paste text to inspect raw byte values, search for patterns, and configure the display to match your preferred format. How to Use Paste text into the input area or upload a file (up to 1 MB). Configure bytes per row (8, 16, or 32), byte grouping, and offset format. Click Generate Dump to view the hex dump. Use the search box to highlight specific hex patterns or ASCII strings in the output, and copy the ...
ツールを試す »Time Duration Formatter Convert any duration — entered in seconds, milliseconds, or clock format — into multiple human-readable representations simultaneously. See verbose, short, ISO 8601, clock, and approximate formats side by side, with a full breakdown by time unit. How to Use Select your input mode (Seconds, Milliseconds, or Clock hh:mm:ss), enter your duration value, and click Format. The tool instantly displays the duration in all supported formats — from verbose natural language to ISO 8601 standard notation. Features Multiple Input Modes – Enter duration as total seconds, milliseconds, or clock format (hh:mm:ss or hh:mm:ss.mmm) Verbose Format – “2 days, 3 hours, 4 minutes, 5 seconds” with zero units omitted ...
ツールを試す »JWT Expiry & Lifetime Checker Paste a JSON Web Token to instantly check its expiry status, see a live countdown to expiration, and visualize the token’s lifetime on an interactive timeline. Decode all standard claims (iss, sub, aud, exp, iat, nbf) plus custom claims — all without needing the signing secret. Everything runs in your browser. How to Use Paste your JWT in the input field and click Check. The tool decodes the header and payload, displays the token’s validity status (valid, expired, not yet valid, expiring soon), shows a live countdown updating every second, and renders a visual timeline from issued-at to expiration with the current time marked. Features ...
ツールを試す »スコアボード ゲームを追跡する楽しい方法です。すべてのデータはブラウザに保存されます。さらに多くの機能がまもなく登場します！
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