Precision Calculators & Cyber Dev Tools
High-speed, private calculation engines for finance, everyday math, health, academics, and developer workflows.
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🧮 Everyday Precision Math & Life Tools
All-in-One Percentage
5-in-1 calculator: What is X% of Y, % change, discount & fractions
Date Diff & Business Days
Exact days, weeks, months & working business days between dates
Unit Converter
High-precision length, weight, data & temperature conversion
Tip & Bill Splitter
Split restaurant bills with custom tip %, tax & share breakdown
Aspect Ratio Scaler
Calculate dimensions for 16:9, 4:3, 21:9, 9:16 and 4K presets
Fuel Cost & Mileage
Calculate trip fuel consumption, road trip cost & carpool shares
Password Generator
Cryptographically strong random password and pass-phrase generator
Text & Word Counter
Character, word, sentence, reading time and syllable statistics
🏃 Health, Fitness & Body Composition
TDEE & Calorie Deficit
Daily energy expenditure, cutting/bulking calories & macro split
BMI & Calorie BMR
Body mass index and basal metabolic rate with healthy ranges
US Navy Body Fat %
Clinical body composition from neck, waist, hip measurements
Ideal Body Weight
Compares Devine, Robinson, Miller, and Hamwi medical formulas
Daily Hydration Tracker
Optimal daily water intake in liters and 250ml glass checklist
Pregnancy Due Date
Naegele rule, fertile window predictor and trimester milestones
🎓 Academic & Student Calculators
GPA / CGPA to % Converter
Indian 10.0 scale (CBSE x9.5) and US 4.0 scale GPA converter
Final Exam Target Grade
Calculate required final exam score to achieve target grade
Exact Age & Milestones
Calculate exact age in years, months, days, hours & seconds lived
💻 Developer Cyber-Lab & Utilities
Markdown Live Studio
Real-time WYSIWYG Markdown to HTML editor with live preview & stats
JSON Formatter & Minifier
Format, validate, prettify, fix and minify JSON data
Base64 Universal Studio
Encode & decode text, images, and binary files with Data URIs
Crypto Hash & HMAC
Hardware Web Crypto SHA-256, SHA-512, MD5, SHA-1 & HMAC
UUIDv7 & v4 Generator
Time-ordered RFC 9562 UUIDv7, random UUIDv4 & bulk batches
SQL Query Formatter
Multi-dialect SQL beautifier for PostgreSQL, MySQL, SQLite, T-SQL
Color Studio & WCAG 2.2
HEX, RGB, HSL, CMYK, OKLCH converter & WCAG contrast checker
Number Base & Bitwise
Binary, Octal, Decimal, Hexadecimal, ASCII & interactive bit-grid
JSON to TypeScript & Zod
Automatic type inference, TypeScript interface & Zod generator
JWT Token Inspector
Decode headers, claims and inspect expiry timer locally
Code & Text Diff
Side-by-side visual difference comparison with syntax highlight
RegEx Playground
Test regular expressions & match capture groups live
URL Encoder / Decoder
Encode/decode URLs and parse query parameter strings
Cron Explainer
Human readable explanation of crontab schedule syntax
cURL to Fetch
Convert curl commands to modern JavaScript Fetch API
Epoch Timestamp
Convert Unix timestamp to UTC, Local & IST
💰 Financial, Investment & Tax Calculators
SIP & Wealth Projector
Mutual fund SIP with annual step-up & inflation adjustment
Mortgage & Amortization
Monthly P&I, property tax, insurance, PMI & amortization table
Income Tax 2024 (Old vs New)
Side-by-side regime comparison, 87A rebate & deductions
GST India Calculator
Calculate CGST, SGST, IGST with interstate & inclusive rates
PPF Maturity & Interest
Statutory 7.1% interest with 5-year extension block simulator
Loan EMI & Prepayment
Calculate monthly EMI and prepayment interest savings
SWP Systematic Withdrawal
Monthly withdrawal drawdown with capital depletion tracker
Salary In-Hand (CTC)
Breakdown monthly take-home, PF (12%), HRA, PT & monthly TDS
NPS Pension & Annuity
60% tax-free lump sum and monthly annuity pension at age 60
Margin vs Markup Solver
Bidirectional multi-variable profit, cost & selling price solver
Sukanya Samriddhi (SSY)
8.2% government scheme for girl child with 21-year maturity table
HRA Exemption u/s 10(13A)
Calculate tax-exempt rent allowance & optimal rent threshold
Capital Gains Tax
12.5% LTCG, 20% STCG on stocks and real estate dual-indexation
Compound Interest
Calculate wealth growth with compounding frequencies & tables
Fixed Deposit (FD)
Quarterly compounding bank deposit maturity and interest payout
CAGR Return
Compound annual growth rate for multi-year stock investments
Inflation Impact
Calculate future purchasing power erosion on savings
Gratuity Calculator
Statutory gratuity per Payment of Gratuity Act 1972
Discount & Sale
Calculate sale prices, double coupons & effective savings
Currency Converter
Live baseline exchange rates (USD, INR, EUR, GBP, JPY, AED)
UPI & QR Pay Generator
Generate UPI payment QR codes instantly with custom amount
Why OmniTools is the #1 Multi-Utility Workstation
● 100% In-Browser Privacy
Every financial calculation, password, and QR payload is computed in device RAM. Zero bytes are uploaded to any remote server.
● Indian Tax & Finance Rules
Updated for Budget 2024 revisions with Section 87A rebate checks, standard deductions, and CGST/SGST/IGST interstate precision.
● Instant Copy & Export
1-click clipboard copying, PNG QR downloads, and full monthly amortization tables for effortless sharing.