All 71 Calculators
Browse all 71 interactive calculators organized by category.
Mortgage Calculator
Calculate monthly home loan principal and interest, PITI + HOA breakdown, and full amortization schedule with extra payment savings.
Loan & EMI Calculator
Compute monthly EMI, total interest share, processing fee impact, and yearly repayment schedule in ₹ INR (Lakhs/Crores) or $ USD.
Compound Interest Calculator
Project nominal and inflation-adjusted investment growth with customizable compounding frequency and deposit timing.
SIP Calculator (Systematic Investment Plan)
Estimate mutual fund SIP maturity corpus with optional annual step-up percentage and inflation purchasing-power adjustment.
ROI Calculator (Return on Investment)
Compute simple ROI %, net profit, return multiple (MOIC), and annualized ROI over your exact holding period.
GST Calculator (India)
Calculate GST-exclusive and GST-inclusive invoice amounts with CGST + SGST (intra-state) or IGST (inter-state) breakdown.
PPF Calculator (Public Provident Fund)
Calculate 15-year PPF maturity balance, total principal deposited, and tax-exempt compounded interest.
SWP Calculator (Systematic Withdrawal Plan)
Project remaining investment balance, cumulative withdrawals, and corpus sustainability over time.
FD & RD Calculator (Fixed & Recurring Deposit)
Compute bank FD (lump-sum) and RD (monthly installment) maturity values using quarterly IBA compounding conventions.
Gratuity Calculator (India)
Compute gratuity entitlement using the statutory 15/26 formula, service rounding rules, and Section 10(10) ₹20 Lakh tax-exemption split.
CAGR & FIRE Calculator (Financial Independence)
Compute nominal CAGR, Fisher real return after inflation, and Safe Withdrawal Rate (SWR) FIRE retirement corpus target.
EPF Calculator (Employees Provident Fund)
Project your EPFO retirement balance with employee + employer contributions, EPS ₹1,250/mo diversion, and annual salary growth.
Step-Up SIP Calculator (% & Fixed ₹ Top-Up)
Compare annual percentage (%) or fixed rupee (₹) SIP top-ups against a flat monthly SIP with a year-by-year advantage table.
Inflation-Adjusted SIP Calculator (Real Purchasing Power)
See what your future SIP corpus is worth in today’s purchasing power after discounting for CPI inflation.
Target Goal SIP Calculator (Reverse SIP Solver)
Solve for the exact starting monthly SIP needed to reach a ₹1 Cr, ₹5 Cr, or custom inflation-adjusted goal.
SIP vs. Lump Sum & Hybrid Calculator
Model a one-time lump sum, a monthly SIP, or both combined in a single portfolio trajectory.
SIP Delay Cost Calculator (Cost of Waiting)
See how much final maturity wealth is lost by delaying your SIP and what catch-up installment is needed to recover.
Post-Tax & Expense Ratio (Direct vs. Regular) SIP Calculator
Compare Direct vs. Regular mutual fund expense ratio drag and compute net take-home corpus after 12.5% Section 112A LTCG tax.
Multi-Frequency SIP Calculator (Daily, Weekly, Monthly, Quarterly)
Compute Daily, Weekly, Fortnightly, Monthly, or Quarterly SIP returns with a cross-frequency equivalence table.
Coast SIP Calculator (Invest X Years, Hold Y Years)
Calculate how a SIP corpus grows when you stop new contributions after X years and let existing units compound for the remaining horizon.
SIP-to-SWP Retirement Bridge Calculator
Simulate Phase 1 SIP accumulation at equity returns followed by Phase 2 monthly SWP retirement income at conservative hybrid/debt returns.
ELSS Tax-Saving SIP Calculator (Section 80C)
Compute ELSS SIP wealth creation alongside Section 80C tax savings (up to ₹1.5L/yr deduction) and 3-year rolling lock-in schedule.
All-in-One Real Wealth SIP Calculator (Step-Up + Lump Sum + TER + Tax + Inflation)
View the complete 4-stage wealth waterfall: Gross Nominal → Net of Expense Ratio → Post-LTCG Tax → Real Purchasing Power.
TVM Finance, Present Value & Effective APR Calculator
Compute Future Value, Present Value, Required Monthly Payment, and Newton-Raphson Effective APR with upfront loan fees.
Debt Payoff, Credit Card & Consolidation Calculator
Simulate multi-card debt payoff, consolidation interest savings, and cash-back vs. low-APR auto financing.
Home Affordability, Rent vs. Buy, Rental Cap Rate & Global Mortgage Calculator
Compute 28/36 DTI home affordability, Rent vs. Buy comparison, Rental Cap Rate/NOI, and Canadian semi-annual compounding.
Bond Yield, Auto Lease, Depreciation, Salary & Budget Calculator
Compute vehicle lease payments, asset depreciation, bond YTM, hourly wage equivalence, and 50/30/20 household budgets.
Income Tax & Take-Home Paycheck Calculator (India New vs. Old Regime)
Compare New vs. Old Tax Regime liability, Section 87A rebate, 4% cess, and net monthly take-home paycheck.
401(k), Roth IRA, RMD & Retirement Pension Calculator
Project 401(k) employee + employer match growth and calculate IRS Required Minimum Distributions (RMD).
Pay Raise, Percent-Off Sale Discount & Unit Price Comparison Calculator
Compute salary/hourly pay raises, stacked percent-off retail discounts, and multi-item unit price savings.
BMI Calculator (Body Mass Index)
Compute BMI, Ponderal Index, and healthy weight range with both global WHO and Asia-Pacific/Indian clinical screening thresholds.
Calorie Needs & TDEE Calculator
Estimate resting BMR and daily maintenance calories (TDEE) using the Mifflin-St Jeor equation, plus daily protein, carb, and fat targets.
Body Fat (US Navy), Lean Body Mass & Body Surface Area Calculator
Compute US Navy Body Fat %, fat-free Lean Body Mass (kg), Mosteller BSA (m²), and Waist-to-Hip Ratio.
Running Pace, One-Rep Max (1RM), Target Heart Rate & Calories Burned Calculator
Compute running pace & race splits, Epley/Brzycki 1RM strength max, Karvonen HR zones, and METs energy burn.
Pregnancy Due Date, Conception, Weight Gain & Ovulation Calculator
Estimate obstetric due date (40 weeks), ovulation/conception date, menstrual cycle interval, and IOM pregnancy weight gain range.
Sleep Cycle Planner & Clinical eGFR (2021 CKD-EPI) Reference Calculator
Plan 5-cycle (7.5 hr) and 6-cycle (9.0 hr) bedtimes and compute 2021 CKD-EPI eGFR from serum creatinine.
Percentage Calculator
Solve all four percentage questions simultaneously: X% of Y, ratio percentage, percentage change, and symmetric percentage difference.
Scientific Calculator
Evaluate nested expressions with trigonometry (Deg/Rad), logs, roots, factorials, constants π and e, plus interactive f(x) curve plotting.
Geometry Calculator (Right Triangle, Circle & Cylinder)
Solve right triangles, circles, and cylinders with live dimension-labeled SVG schematics.
Statistics & Standard Deviation Calculator
Calculate sample SD (s), population SD (σ), variance, mean, median, IQR, and Z-score with a frequency histogram.
Fraction, Mixed Number, GCF, LCM & Prime Factorization Calculator
Perform exact rational fraction arithmetic and compute GCF, LCM, long division remainder, and prime factors.
Quadratic Formula, Slope, Distance & Half-Life Calculator
Compute real or complex quadratic roots, discriminant Δ, Cartesian slope & distance, and half-life decay.
Permutations, Combinations, Probability, Sample Size & P-Value Calculator
Compute nCr, nPr, binomial probability, normal p-values from Z-scores, and 95% confidence sample size.
Matrix Determinant/Inverse & Binary/Hex Radix Calculator
Calculate matrix determinant, trace, and inverse alongside Binary, Hexadecimal, and Octal radix conversions.
Age Calculator
Find exact age in years, months, and days, plus total weeks, days, hours, day of the week born, and next birthday countdown.
Date Difference & Business Days Calculator
Calculate total days, years/months/days, weekdays vs. weekends, and net working days between two calendar dates.
Time Duration, Shift Time Card, Overtime Pay & Time Zone Calculator
Total shift hours net of breaks, compute 1.5× FLSA overtime pay, and convert global UTC time zone offsets.
Concrete & Square Footage Calculator
Estimate surface area (sq ft / m²), concrete volume (yd³ / m³ / ft³), and 60-lb or 80-lb pre-mixed bag counts.
Roofing, Stair Stringer, Tile, Mulch/Gravel & HVAC BTU Calculator
Compute pitched roofing squares & bundles, stair riser counts, bulk mulch/gravel yd³, and HVAC BTU load.
Feet, Inches & Tape-Measure Fraction Calculator
Add, subtract, multiply, and convert feet, whole inches, and tape-measure fractions (1/16", 1/32", 1/64") with metric and architectural scale outputs.
Board Foot, Lumber Weight, Wall Stud Framing & Board-and-Batten Calculator
Compute lumber Board Feet (BF), species weight, total cost, wall framing stud count, and equal Board-and-Batten spacing.
Drywall Sheets, Paint Gallons, Siding Squares & Wallpaper Calculator
Calculate 4×8 and 4×12 drywall sheets, joint compound, paint gallons, siding squares, and wallpaper rolls.
Deck Boards, Patio Pavers, Fence Post/Picket & Retaining Wall Calculator
Estimate decking boards, patio pavers & gravel base, fence posts/rails/pickets, and CMU retaining wall blocks.
Pipe Volume, Pool & Tank Gallons, Water Flow Rate (GPM) & HVAC CFM Calculator
Compute rectangular and round pool/tank gallons, water weight, pipe volume & GPM flow rate, and HVAC CFM.
EV Charging Cost & Fuel vs. Electricity Calculator
Compare EV charging cost (including onboard charger efficiency loss) against combustion fuel cost per 100 km and per year.
Ohm's Law, Wire Voltage Drop & Resistor Series/Parallel Calculator
Compute Ohm’s Law (V, I, R, P), NEC wire voltage drop percentage, and series/parallel resistance.
Molarity, Density, Engine Horsepower & Dew Point / Weather Calculator
Compute solution Molarity (M), density (g/L), torque-RPM Horsepower, and Magnus Dew Point (°C/°F).
Amps, Watts, Volts, kVA & kWh Power Converter, NEC Wire Ampacity & LED Calculator
Convert Amps, Volts, Watts, kW, kVA & HP, size NEC 75°C copper wire gauge, and compute kWh cost & LED resistors.
SaaS Metrics Calculator (MRR, ARR, LTV, CAC & Break-Even)
Compute MRR, ARR, gross-margin LTV, LTV:CAC ratio, CAC payback months, and break-even customer count.
Marketing ROAS, CPC, CPM, CPA & CTR Calculator
Analyze your full paid ad funnel, CPM, CTR, CPC, CVR, CPA, ROAS, break-even ROAS, and net profit after COGS.
App Ad & Subscription Revenue Calculator
Project hybrid app monetization combining ad impressions/fill-rate/eCPM with subscription proceeds net of store fees.
Freelance Pricing & Hourly Rate Calculator
Reverse-engineer your required hourly, daily, and weekly consulting rate from your target net pay, overhead, taxes, and realistic billable utilization.
API Token Cost Calculator
Estimate daily and 30-day LLM API spend with separate uncached input, cached context, and output token rates.
Aspect Ratio, Image Dimensions & Storage Converter
Compute GCD aspect ratios, responsive image dimensions, megapixels, and decimal (GB) vs. binary (GiB) storage capacities.
IPv4 CIDR Subnet, Password Entropy & URL/Base64 Encoding Calculator
Compute IPv4 CIDR subnet masks & usable host counts, password Shannon entropy bits, and URL encoding.
Cooking Conversions & Recipe Scaling Calculator
Scale recipe servings and convert cups/tbsp/tsp/mL into grams and ounces using USDA ingredient densities.
Tip & Bill Split Calculator
Compute pre-tax tip, tax, grand total, and per-person split for any group size.
TV Viewing Distance & Screen Size, Shipping DIM Weight & Pet Age Calculator
Compute TV width/height & viewing distance, carrier DIM shipping weight, and pet human age & daily calories.