AraiTool

Generate an editable cover-letter draft from role, company, skills and a measurable achievement, ready to copy or download.

Practice deterministic interview questions by role, level and focus, save answers locally and self-check against a STAR rubric.

Turn role summary, responsibilities, qualifications and benefits into a consistent, editable job description.

Build a private resume draft from summary, experience, education and skills, then copy or download it locally.

Convert annual, monthly, biweekly, weekly or hourly pay into comparable gross amounts and an optional net estimate.

Estimate a planning time range by food type, weight and method while showing USDA minimum safe internal temperatures.

Convert cups, tablespoons and teaspoons to grams and ounces using ingredient-specific reference densities.

Merge recipe or manual entries by category and ingredient while preserving quantities in a copyable, downloadable checklist.

Find ratio-based substitutes for eggs, butter, milk, buttermilk, flour and sugar with dietary filters and usage cautions.

Generate a repeatable daily dinner plan by days, people and dietary style, then save it locally in the browser.

Scale ingredient quantities by original and target servings, supporting decimals, fractions and mixed numbers line by line.

Complete Base64 encoding and decoding of UTF-8 text locally in the browser, supporting standard and URL-safe formats, result copying, and text downloading.

Convert CSS colors between HEX, RGB, RGBA, HSL and HSLA, preview colors and calculate brightness, black and white text contrast.

Compress JPG, PNG and WebP images natively in the browser, adjust quality and maximum size, and preview, compare sizes and download results.

Online JSON formatting, beautification, compression and verification tool, supporting syntax highlighting and error prompts

Safely preview Markdown in the browser, supporting common syntax such as titles, lists, quotes, codes, links, etc. You can copy or download HTML that has been escaped and linked protocol verified.

Use the LCS algorithm in the browser to compare two paragraphs of text line by line, clearly mark new, deleted and unmodified content, and support copying and downloading the difference results.

Enter a date from 1900 to 2100 and get local estimates in your browser of eight moon phases, moon age, illumination ratio, and next full and new moon dates.

Solve three original mate-in-one chess positions by selecting a piece and destination square, with touch, fullscreen and restart support.

Solve original 4×4 Portuguese or English mini crossword word squares for free, with answer checking, hints, new puzzles, keyboard and touch controls.

Play a deterministic daily Aces Up solitaire deal by comparing same-suit top cards, removing lower cards and moving cards into empty columns.

Complete a 15, 30, 60, or 120-second typing test using the current page language or English text to view WPM, CPM, accuracy, and error count natively in the browser.

Unscramble practical English words from definitions with a deterministic daily order and round score.

Estimate air conditioning BTU/h by room conditions, and estimate electricity usage and costs using rated power, operating hours, load ratio, and local electricity prices.

Calculate concrete volume, waste allowance, bag count and cost for rectangular slabs or round columns and holes.

Estimate drywall sheets, screws, waste and cost for room walls and an optional ceiling.

Calculate fence posts, panels, rails and cost from perimeter, gates, spacing, panel width and waste.

Calculate whole packs, waste allowance, leftover material and cost for wood, laminate or vinyl flooring from room dimensions or a known net area.

Calculate mulch for rectangular or circular beds in cubic yards and cubic feet, then estimate full bags and cost.

Calculate the number of liters, barrels and budget of paint based on room size or known area, or back-calculate how many square meters the existing paint can cover.

Enter rise and run to calculate roof pitch ratio, percentage, angle and slope factor; optionally estimate gable-roof rafters, area, bundles and cost.

Calculate the area of multiple rectangular spaces, subtract exclusions, add material waste and estimate project cost.

Calculate floor or wall tile from dimensions or known area. Estimate tiles, waste, boxes from printed coverage, leftovers and cost.

Real-time display of round dial hours, minutes and seconds hands and a digital clock with year, month, day, hours, minutes, seconds and milliseconds. Dial, digital or combined display can be selected.

Calculate great-circle distance, miles, initial bearing and a route estimate between two latitude-longitude points.

Save flight number, date, route and manually confirmed status locally, with a direct live-status search link.

Enter the one-way distance, vehicle fuel consumption and local fuel price to calculate the fuel required for a round trip, total cost, per person cost and cost per kilometer or per mile. Supports L/100km, km/L and US MPG.

Find meeting times across multiple time zones, compare working-hour overlap, and account for daylight-saving time without a login or calendar access.

Generate a quantified, copyable packing checklist from trip length, climate, trip type, laundry and activities.

Convert a local date and time to two destination zones and UTC using browser IANA time-zone and daylight-saving rules.