Calculators for everyone and everything
C4Calcualtors or C for Calculators is a online platform where you can find the answers of the various types of calculations
Perform multiple types of calculations
Our platform provides different types of calculators to find the answers of different types of calculations
Financial
Calculate, plan, and compare your savings, loans, investments, and taxes with our easy-to-use financial calculators — all in one place.
- Discount Calculator Online – Calculate Savings
- ROI Calculator – Linear vs Compound Returns Comparison
- Compound Interest Calculator
- Savings and Investment Calculator
- Income Tax Calculator
- SIP Calculator
- Future value of one-time investments
- Mutual Fund Return Calculator
- Car Loan EMI Calculator
- Car Lease vs Buy Calculator
- Home Expense Calculator — Monthly & Annual Household Budget Tool
- Mortgage EMI Calculator — Global Mortgage Calculator & Amortization Tool
- USA Property Tax Calculator — State-wise Estimates & Detailed Explanation
- Real Estate ROI Recovery Time Calculator | Break-Even Point
- Simple ROI Calculator – Calculate Total & Annual Gains Instantly
- ROI Calculator with Annualized Returns (CAGR) – Compound Growth
- Retirement Calculator — Universal (Currency Auto-Detect) | Estimate Your Corpus & Monthly Pension
Mathematics
Explore quick and accurate math calculators for algebra, geometry, trigonometry, and statistics — solve equations, ratios, and formulas instantly.
- Percentage Calculator – Online Tool to Solve Percentage Problems Instantly
- Scientific Notation Calculator | Convert to Standard & Decimal
- Sine, Cosine, Tangent Calculator with Graph & Table – Free Online Trigonometry Tool
- Derivative Calculator — Compute f'(x) with Steps, Graph & Examples
- LCM HCF Calculator – Find LCM & GCD Online
- Quadratic Equation Solver – Step-by-Step Solutions & Graph
- Logarithmic and Exponential Calculator – Free Online Tool
- Matrix Calculator — Determinant, Inverse & Multiplication (2×2 → 6×6)
- Statistics Calculator — Mean, Median, Mode, Variance & Standard Deviation
Time and Date
Manage your schedules with time and date tools that help you calculate age, duration, countdowns, and important date differences.
Health and Fitness
Track your fitness goals and wellness metrics with BMI, calorie, BMR, and other health-related calculators designed for daily use.
- BMI Calculator – Check Your Body Mass Index Online Instantly
- Daily Calorie Intake Calculator – BMR, TDEE & Macros (Free Online Tool)
- Ideal Weight Calculator
- Digital Burnout Risk Calculator – Measure Your Online Stress & Fatigue Level
- Climate Impact Calculator – Daily & Yearly CO₂ Footprint
- Cognitive Load Estimator – Measure Your Mental Workload Instantly
- Nutrition Meal Planner Calculator – Personalized Daily Calories & Macro Ratio
- Baby Growth Percentile Calculator (WHO 0–5 Years) — Weight, Height & Head Circumference
Career & Salary Calculators
Estimate salaries, in-hand income, and freelance rates using calculators that simplify financial planning for professionals.
Travel & Transport
Plan smarter trips with cost, fuel, and distance calculators that help you budget travel expenses and optimize routes.
Scientific
Perform scientific, physics, and energy-based calculations with precision using our advanced, formula-ready calculator tools.
- Newton’s Second Law Calculator
- Kinetic Energy Calculator – Calculate KE, Mass & Velocity with Formula & Graph
- Potential Energy Calculator – Convert Units, Compare Energy Equivalents, and Explore Gravity Effects
- Gravitational Force Calculator – Newton’s Law with Formula & Chart
- Centripetal Force Calculator – Formula, Examples, Units & Charts
- Density Calculator — Mass ÷ Volume Online (kg/m³ & g/cm³)
- Work and Power Calculator | Physics Formulas & Examples
- Ohm’s Law Calculator — Voltage, Current & Resistance Calculator
Unit & Measurement Converters
Instantly convert length, area, weight, temperature, and more with our fast and reliable unit conversion tools.
Family & Lifestyle
Simplify your daily life with calculators for birthdays, budgets, compatibility, home planning, and personal well-being.
- Birthday Party Budget Planner — Free Guest & Budget Calculator
- Indian Zodiac Finder – Know Your Rashi by Birthdate
- Paint Calculator — Paint Required, Cost & Room Breakdown
- Rent Affordability Calculator — How Much Rent Can You Safely Pay?
- Couples Match Compatibility Calculator — Zodiac, Personality & Lifestyle Analysis
- Real Estate ROI Recovery Time Calculator | Break-Even Point
- Cost of Living Comparison Calculator – US Cities & Salary
- Pet Food Cost Calculator — Estimate Monthly & Annual Pet Food Expenses
Text Tools
Generate, convert, and analyze text effortlessly using ASCII, binary, slug, and encoding tools for writing or development tasks.
Content Formatting Tools
Format, clean, and convert content for SEO, coding, or publishing — from dummy text generators to binary and HTML converters.
Developer-Friendly Tools
Speed up your workflow with developer utilities like JSON, hash, and encoding tools — ideal for quick validation and testing.
- JSON Formatter & Validator Tool | Format & Validate JSON
- UUID v4 Generator | Free Secure Online UUID Generator
- Random String Generator | Free Secure Online Tool
- Online Regex Tester – Test, Highlight & Replace Regular Expressions Instantly
- Hash Generator — MD5, SHA-1, SHA-256, SHA-384, SHA-512 (online tool)
Reasoning & Aptitude
Sharpen your logical thinking and problem-solving skills with reasoning and aptitude calculators designed for exams, puzzles, and analytical practice.
Business & Freelance Calculators
Manage project costs, pricing, and profit margins with calculators built for freelancers, startups, and small business owners.
Home & Utility CalculatorsHome & Utility Calculators
Handle household planning, EMI, and expense calculations with practical tools designed to simplify everyday financial tasks.