Pocalc: 3,908+ Free Online Calculators, Tools & Converters
3,908+ Free Online Tools
Free Online Calculators & Tools
Explore 3,908+ free calculators, charts & converters for finance, engineering, math, health, science, business and more. No sign-up required.
Recently Used Tools
Featured Everyday Utilities
Daily Live
Today's Panchang
Access comprehensive daily astrological insights with an advanced Panchang calculator featuring real-time Panchak visibility, Choghadiya timings, and detailed lunar elements tailored to your location.
Vedic Chart
Kundli Generator
Generate a high-precision Janam Kundli with comprehensive planetary positions, D1/D9 charts, Vimshottari Dasha calculations, and a premium PDF report export.
Compatibility
Kundli Matching
Find your perfect match with a comprehensive Kundli matching calculator that features high-precision Ashtakoot scoring, advanced Mangal Dosha cancellation, and premium PDF generation.
Real Estate
Mortgage Calculator
Estimate your comprehensive monthly housing payments with an enterprise-grade mortgage calculator that supports Conventional, FHA, and VA loans, complete with built-in PMI, MIP, and upfront funding fee logic.
Health
BMI Calculator
Calculate your BMI, BMR, and ideal weight seamlessly using Metric, Imperial, or Mixed units for highly precise health tracking.
Income
Salary Converter
Seamlessly translate your earnings across hourly, daily, bi-weekly, monthly, and annual frequencies with our comprehensive gross salary converter.
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Astrology & Horoscope
168+ Tools
Nakshatra Finder
Find your exact Vedic Birth Star (Janma Nakshatra) and optimal naming sounds with a highly precise calculator featuring a 60-term lunar algorithm and automatic timezone detection.
Shani Sade Sati Calculator
Discover your complete Sade Sati and Shani report with a 100% accurate V5 engine, featuring True IANA timezone logic and precise Saturn transit tracking.
Rasi Calculator
Discover your true Vedic Moon Sign with our Elite Rasi Calculator, featuring auto-timezone detection and ultra-precise astronomical algorithms.
Destiny Number
Unlock your cosmic blueprint with an elite Destiny and Panchang calculator featuring high-precision numerology and advanced lunar astrology algorithms.
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Finance & Money
361+ Tools
Personal Loan Calculator
Plan your borrowing with an advanced personal loan calculator that features extra payment simulations and origination fee logic to reveal your true costs.
401(k) Retirement Calculator
Smarter 401(k) projections for a secure tomorrow.
Auto Loan Calculator
Professional estimator including taxes, dealer fees, and bi-weekly payment options.
ROI Calculator
Calculate your total return and annualized growth (CAGR) with an intuitive ROI calculator featuring clear visual profit and loss breakdowns.
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Business & Enterprise
320+ Tools
Invoice Generator
Create professional, print-ready invoices instantly with our client-side generator featuring customizable line items, dynamic tax rates, and a clean PDF layout.
Profit Margin Calculator
Evaluate pricing strategy with an enterprise-grade calculator featuring Markup vs Margin modes and a visual profitability breakdown.
EBITDA Calculator
Evaluate your company's core operational profitability with a dual-method EBITDA calculator that solves for earnings and margins using both top-down and bottom-up financial modeling.
Working Capital Calculator
Determine your business's short-term financial health and liquidity to ensure you can safely cover upcoming operations.
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Developer & Webmaster
284+ Tools
JSON to CSV / Excel Converter
Flatten complex JSON arrays into standard CSV formats with smart nested object mapping and zero-server-load processing.
QR Code Generator
Encode URLs, WiFi credentials, vCards, and SMS messages into high-resolution scannable matrices instantly, featuring 100% secure client-side generation and custom aesthetic coloring.
SQL Query Formatter & Pretty Printer
Restructure and prettify complex SQL queries with intelligent indentation and syntax formatting.
Regex Tester & Cheat Sheet
Test regular expressions, visualize pattern matches, and extract capture groups instantly.
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Fitness & Health
155+ Tools
Body Fat Percentage Calculator
Medical-grade body composition tool, Calculates Body Fat %, Lean Mass, and Fat Mass.
Calorie Calculator
Plan your nutrition seamlessly with a medical-grade TDEE calculator featuring dynamic macro splits for balanced, low-carb, and high-protein diets.
TDEE (Total Daily Energy Expenditure) Calculator
Calculate your precise Total Daily Energy Expenditure and basal metabolic rate with medical-grade formulas.
Intermittent Fasting Tracker
A comprehensive real-time fasting companion featuring preset metabolic protocols, customizable windows, physiological stage mapping, and data history tracking.
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Education & Academics
274+ Tools
GPA Calculator
An ultimate GPA calculator featuring visual trend graphing, target planning, and seamless support for high school, college, and international grading scales.
Academic Percentage Calculator
An all-in-one academic hub featuring multi-subject grading, CGPA conversions, target predictors, and an interactive performance dashboard.
Scientific Calculator
Evaluate advanced mathematical expressions seamlessly with built-in trigonometry, logarithms, factorials, and implicit multiplication.
Final Grade Calculator
Determine the exact score you need to ace your class with an academic-grade final exam calculator featuring a real-time 'What-If' scenario slider.
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Everyday Utilities & General
2,346+ Tools
Percentage Calculator
A complete suite of percentage calculators with real-time math explanations for instant, zero-server-load results.
Days Between Dates Calculator
Find differences, add/subtract time, and calculate business days instantly.
Time to Decimal Calculator
Convert hours and minutes into exact decimal formats for seamless timesheet and payroll management.
Unit Converter
Instantly calculate and convert between lengths, masses, temperatures, and more with a comprehensive, client-side measurement engine.
Curated Solution Suites
Home Buyers Suite
Everything you need before purchasing real estate.
Marriage Compatibility
Comprehensive Kundli & Vedic astrological matchmaking.
Startup & Freelancer Kit
Manage cash flow, project pricing, and invoices.
Fitness & Body Recomp
Scientific body composition and nutrition planning.
Maternity & Motherhood
Pregnancy due date, ovulation, and baby growth tracking.
Developer Utility Hub
Fast browser-based encoders, formatters, and debuggers.
3,908+ Free Tools
Comprehensive library across 30 specialized categories & Vedic systems.
100% Private
Client-side processing. Zero data stored on servers.
Instant Results
Zero wait time with instant browser calculation.
App-Grade Experience
Optimized for Mobile browsers & Android Apps.
Frequently Asked Questions
No sign-up or registration is required. You have immediate, unrestricted access to all 3,908+ calculators, financial simulators, astrology charts, and development tools completely free as a guest.
Your privacy is our highest priority. All mathematical formulas, financial calculations, date computations, and code transformations execute 100% client-side inside your browser. We never log, store, or transmit your private calculation parameters.
Yes. Pocalc Pro is engineered with responsive, touch-friendly UI components tailored specifically for smartphones, tablets, and native Android WebView applications, delivering a smooth 60fps app experience.
Every utility on Pocalc is built using standardized astronomical ephemeris models (for Vedic charts and Panchang), banking industry compound amortization formulas (for Finance), and CDC/WHO nutritional benchmarks (for Fitness).
Popular Astrology:
Today Panchang |
Janam Kundli |
Kundli Matching |
Sade Sati |
Manglik Dosh |
Nakshatra Finder |
Destiny Number |
Prashna Kundli |
Career Astrology
Popular Finance: Mortgage Calculator | Personal Loan | 401(k) Retirement | Compound Interest | ROI Calculator | Sales Tax / GST | Debt Payoff
Popular Health: BMI Calculator | Body Fat % | Calorie Calculator | TDEE Calculator | Pregnancy Due Date | Water Intake | Intermittent Fasting
Popular Developer: JSON to CSV | QR Code Generator | SQL Formatter | RegEx Tester | Base64 Decoder | Diff Checker | UUID Generator
Math & Everyday: Percentage Calculator | Age Calculator | Days Between Dates | GPA Calculator | Scientific Calculator | Universal Unit Converter
Popular Finance: Mortgage Calculator | Personal Loan | 401(k) Retirement | Compound Interest | ROI Calculator | Sales Tax / GST | Debt Payoff
Popular Health: BMI Calculator | Body Fat % | Calorie Calculator | TDEE Calculator | Pregnancy Due Date | Water Intake | Intermittent Fasting
Popular Developer: JSON to CSV | QR Code Generator | SQL Formatter | RegEx Tester | Base64 Decoder | Diff Checker | UUID Generator
Math & Everyday: Percentage Calculator | Age Calculator | Days Between Dates | GPA Calculator | Scientific Calculator | Universal Unit Converter