All Tools & Calculators Directory

Resize JPG, PNG, and WebP images by pixels or percentage with aspect ratio lock and social presets.

Client-side image compression with quality slider, live size calculation, and savings metrics.

Convert between JPG, PNG, and WebP with transparency fill color selection and progressive AVIF support.

Calculate current attendance, bunkable classes, and classes needed to reach 75% or 80%.

Credit-weighted GPA calculator with VTU, Anna University, and custom percentage conversion.

Calculate what is X% of Y, percentage increase/decrease, and ratios.

Calculate percentage increase, decrease, and relative difference between two numbers.

Mean, median, mode, and standard deviation solver.

Convert proper, improper, and mixed fractions to decimal values.

Greatest Common Divisor and Least Common Multiple with step-by-step factors.

Solve ax² + bx + c = 0 with real and complex roots and vertex.

Generate complete meta tags, Google SERP snippet, Open Graph, and Twitter Cards.

Create standards-compliant sitemap.xml files with priority and change frequency tags.

Preview desktop and mobile Google search engine result snippets.

Create robots.txt directives for search engine crawlers with allow/disallow rules.

Generate JSON-LD structured data for Articles, FAQs, and Organizations.

Analyze text for keyword frequency and density percentages.

Convert text into clean, SEO-friendly, hyphenated URL slugs.

Create social media preview tags for Facebook, LinkedIn, and Twitter.

Beautify, inspect, and validate JSON payloads with syntax error tracking.

Compress JSON payloads by removing whitespace and line breaks.

Encode and decode plain text and binary strings to Base64.

Encode text for URLs or decode percent-encoded query parameters.

Generate cryptographically secure RFC-4122 compliant UUIDs.

Compute SHA-256, SHA-512, MD5, and SHA-1 cryptographic hashes.

Test regular expressions in real-time with capture groups and flags.

Minify frontend assets to reduce payload size.

Generate placeholder dummy text by paragraphs, sentences, or words.

Real-time word, character, sentence, and paragraph counts with reading time.

Detailed character counts with spaces, without spaces, and social media limits.

Estimate speech, silent reading, and presentation time based on word count.

Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case.

Strip trailing spaces, consecutive blank lines, and tabs from text.

Deduplicate text lists and paragraphs while preserving original ordering.

Side-by-side comparison highlighting added, removed, and modified lines.

Sort lines alphabetically (A-Z, Z-A), by length, or numerically.

Calculate gross profit margins, revenue targets, and markup percentages.

Compute pre-tax and post-tax totals, combined state/local rates, and tax amounts.

Calculate markdown savings, final sale prices, and double-discount percentages.

Convert annual salary to hourly, weekly, bi-weekly, and monthly earnings.

India Goods & Services Tax calculation with slab rates and CGST/SGST breakdown.

Determine unit volume and revenue needed to cover fixed and variable costs.

Calculate flat, tiered, and quota-based commission earnings.

Build Google Analytics UTM tracking parameters for digital campaigns.

Compute SHA-256, SHA-512, MD5, and SHA-1 cryptographic hashes client-side.

Generate cryptographically secure RFC-4122 compliant UUIDs.

Safely encode and decode binary tokens and plain strings client-side.

Generate high-entropy cryptographically secure random passwords (Sprint 4).

Test password entropy, crack time estimations, and pattern vulnerabilities (Sprint 4).

Body Mass Index with WHO category classification and prime weight targets.

Basal Metabolic Rate using Mifflin-St Jeor and Harris-Benedict formulas.

Total Daily Energy Expenditure based on physical activity multipliers.

Daily calorie requirements for weight maintenance, loss, or muscle gain.

90-minute REM sleep cycle calculator for optimal wake-up times.

Daily hydration recommendations based on body weight and climate.

Karvonen target heart rate zones for cardiovascular training.

Naegele's rule gestational age and trimester milestone calculator.

Compare Devine, Robinson, Miller, and Hamwi optimal weight equations.

Custom daily protein requirements based on fitness goals and body mass.

Widmark formula blood alcohol concentration and sober-up timeline.

Fertile window and estimated ovulation dates based on menstrual cycle.

US Navy circumference method body fat percentage estimation.

Calculate monthly home loan payments, interest, taxes, and amortization.

Vehicle loan payments with down payment, trade-in, and sales tax.

Calculate monthly automobile loan installments, interest rates, and loan terms.

Calculate fixed monthly installments and total borrowing fees.

Estimate college loan repayments, interest accrual, and payoff schedules.

General amortized loan payment calculator with principal and interest breakdown.

Compound interest growth projections with regular deposit contributions.

Multi-currency live exchange rate calculator.

Return on Investment percentage and annualized gain analysis.

Estimate retirement savings nest egg and safe withdrawal runways.

Calculate monthly contributions needed to reach a target savings balance.

Split restaurant bills with custom tip percentages per person.

Calculate right triangle hypotenuse and leg lengths (a² + b² = c²).

Find circle area, circumference, radius, and diameter.

Calculate circle perimeter and circumference from radius or diameter.

Calculate triangle area using base/height or Heron's formula.

Calculate powers, exponents, base numbers, and scientific notation.

Exact chronological age in years, months, days, hours, and minutes.

Split restaurant bills and calculate gratuity per person.

Find target dates 30 days before or after any date.

Calculate 90-day deadlines, quarterly timelines, and milestones.

Complete conversion suite for length, weight, mass, temperature, and volume across Metric and Imperial systems.