Free Online Calculators, Converters & AI Micro-Tools
Calculate, convert and solve everyday problems with simple, accurate and free online tools. Fast, private, and 100% client-side.
India Tax & Salary
FY 2026-27 & In-Hand Pay
Govt PDF Suite
Compress 200KB & Merge ID
Finance & SIP
Step-Up SIP & FIRE Calc
LinkedIn Carousel
1080x1080 PDF Slide Deck
Dev Utilities
JSON, Base64, Cron & QR
Converters
Unit & Currency Rates
AI Micro-Tools
Resume Bullets & Email
Monthly Take-Home Pay & Tax Verdict
Current Trending Tools & High-Retention Utilities
The most heavily used 1-click tools loved by professionals, creators, and investors.
Old vs New Tax Regime Switcher (FY 2026-27)
Compare Old vs New Tax Regime side-by-side with automatic tax savings verdict & deduction sandbox.
In-Hand Salary & CTC Breakdown Engine
Calculate exact net monthly bank credit after EPF (12%), Professional Tax, and Income Tax TDS.
LinkedIn Carousel PDF Generator
Design 1080x1080 1:1 vector PDF carousels & slide decks free online with zero watermarks.
Government Portal PDF Compressor (200KB/300KB)
Compress PDFs to exact target KB limits (EPFO 200KB, Passport 300KB, Vahan 500KB) 100% locally.
AI Background Remover & Studio
Remove background from photos with instant studio backdrops (Transparent, White, Passport Blue, Blur).
Smart Image Compressor & WebP Converter
Compress images up to 90% without quality loss. Set exact KB targets, resize dimensions, and export WebP.
HRA Exemption & Rent Receipt PDF Generator
Calculate Section 10(13A) HRA exemption and download legally formatted monthly & annual rent receipts.
Aadhaar Front & Back ID Page Merger
Merge separate front & back photos of Aadhaar cards, PAN, or Voter IDs onto a single printable A4 PDF.
Step-Up SIP & Inflation Deflator Engine
Model top-up SIP wealth creation with annual step-up %, 6% real-purchasing power deflator, and cost of delay.
AI Resume Bullets & Action Verb Enhancer
Transform plain job task bullets into high-impact, metrics-driven achievements tailored for ATS scanners.
Free AI Background Remover & Photo Studio
Isolate products, portraits, and documents with instant studio backdrops. Swap between Transparent PNG, Clean White, Official Passport Blue, or custom colors directly in your browser.
Explore Free Online Tools & Calculators
Filter tools dynamically or type to search across all client-side apps.
Percentage Calculator
Calculate percentages, find what percent a number is of another, or calculate values from percentages.
Percentage Increase Calculator
Calculate the percentage increase from an initial value to a final value.
Percentage Decrease Calculator
Calculate the percentage drop or reduction between an initial value and a smaller final value.
Average Calculator
Calculate the arithmetic mean, sum, count, minimum, and maximum of a set of numbers.
Ratio Calculator
Simplify ratios to simplest form and solve proportions.
Fraction Calculator
Add, subtract, multiply, and divide fractions.
GPA & Weighted Grade Calculator
Calculate semester and cumulative Grade Point Average (GPA), weighted grade points, and class credits.
Profit & Loss Calculator
Calculate profit or loss amount and percentage based on cost price and selling price.
Discount Calculator
Calculate sale prices and savings after applying discount percentages.
Browse Tools by Category
10 specialized tool suites optimized for quick calculation, conversion, and workflow speed.
AI Micro-Tools
Generate ATS resume bullets, corporate email rewrites & Midjourney image prompts.
Developer Tools
Format JSON, encode Base64, build Linux cron expressions & decode JWT tokens.
Finance & EMIs
Loan EMI estimates, SIP mutual fund growth, simple & compound interest calculators.
Math Calculators
Percentage, ratio, percentage increase/decrease, average & fraction tools.
Unit Converters
Convert length, weight, temperature, area, volume & digital data storage units.
PDF & Document Suite
Combine PDFs, extract page ranges, split documents & convert scans—100% private.
Text & Writing Tools
Word counter, character counter, letter case converter & invoice generator.
Date & Time
Calculate exact age, days between dates & working business day counts.
Health & Fitness
Body Mass Index (BMI), Basal Metabolic Rate (BMR) & daily TDEE calorie estimates.
India Tax & Finance
New Tax Regime FY 2025-26, Gratuity, PPF maturity & EPF provident fund.
Everyday Utilities
Fuel trip cost calculator, appliance electricity usage & paint gallon estimators.
Educational Guides & Step-by-Step Formulas
Learn the exact formulas behind our calculators with worked examples.
How to Calculate Percentage: Comprehensive Guide, Formulas & Practical Examples
Master percentage calculations with step-by-step algebraic formulas, real-world retail discount examples, financial growth rates, and test score evaluation.
How Percentage Increase Works: Simple Formula, Real Examples & Easy Steps
Learn how percentage growth rates are computed for salary raises, stock price appreciation, inflation, and business revenue growth with solved examples.
How Percentage Decrease Works: Formula, Shopping Discounts & Depreciation
Understand how percentage reductions, retail markdowns, asset depreciation, and weight loss drops are calculated with step-by-step formulas.
How to Calculate Average: Mean, Median, Mode & Weighted Averages
Learn how to compute arithmetic mean, median, mode, and weighted averages for exam grades, statistical datasets, and business metrics.
Why Millions Prefer Zovixia
Designed for speed, data privacy, modern aesthetic quality, and frictionless everyday productivity.
0ms Latency Engine
Calculations run directly inside your device browser runtime for instant results with zero network lag.
100% Private Client-Side
Your financial numbers, health data, and text payloads are never sent to external servers or logged.
Verified Algorithms
Mathematical formulas, loan EMI equations, and unit ratios are validated against standard formulas.
No Account Required
Complete free access to 30+ calculators, converters, developer utilities, and AI micro-tools anytime.
Modern Client-Side Computational Suite
Zovixia is engineered from the ground up to redefine how everyday web calculations and digital transformations are performed. Rather than sending your sensitive personal budgets, salary figures, health metrics, and text documents to remote servers across the internet, our platform utilizes modern browser runtime technologies to process all calculations directly on your local device.
Zero Latency & Mathematical Precision
Traditional web calculators require round-trip network requests (HTTP POST/GET) for each number adjusted, causing lag, loading spinners, and potential failure on spotty cellular connections. Zovixia executes arithmetic formulas, amortizations, and trigonometric functions using optimized client-side JavaScript that renders results instantly as you type.
Every computational routine adheres strictly to recognized mathematical conventions, financial compounding equations, and international unit conversion matrices (such as NIST and ISO metrology definitions), ensuring complete consistency whether you are preparing coursework or double-checking bank statements.
Privacy by Design & Offline Capabilities
Because your data never leaves your device memory, confidential financial information - such as salary components, mortgage loan principals, tax deduction numbers, and medical body metrics - remains 100% private and protected from data leaks or server breaches.
Also, Zovixia is built as an installable Progressive Web App (PWA) with intelligent Service Worker caching. Once loaded, our calculators, unit converters, and developer utilities function reliably even when offline or in airplane mode, making Zovixia an indispensable tool for students, travelers, and remote professionals worldwide.
Everything You Need to Know
Got questions about speed, security, or accuracy? Here are clear answers.
Yes, 100% of the calculators, unit converters, developer utilities, and AI micro-tools on Zovixia are completely free. There are no mandatory signups, trial limits, or paid paywalls.