∑ CalculatorGraph • Interactive Visual Calculators

Calculate clearly. Understand instantly.

Fast, easy-to-understand calculators for loans, SIPs, taxes, health, math, and everyday decisions—with instant visual graphs and clear formulas.

All 71 Calculators →
Finance

Mortgage Calculator

Calculate monthly home loan principal and interest, PITI + HOA breakdown, and full amortization schedule with extra payment savings.

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Finance

Loan & EMI Calculator

Compute monthly EMI, total interest share, processing fee impact, and yearly repayment schedule in ₹ INR (Lakhs/Crores) or $ USD.

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Finance

Compound Interest Calculator

Project nominal and inflation-adjusted investment growth with customizable compounding frequency and deposit timing.

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Finance

SIP Calculator (Systematic Investment Plan)

Estimate mutual fund SIP maturity corpus with optional annual step-up percentage and inflation purchasing-power adjustment.

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Health

BMI Calculator (Body Mass Index)

Compute BMI, Ponderal Index, and healthy weight range with both global WHO and Asia-Pacific/Indian clinical screening thresholds.

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Health

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.

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Math

Percentage Calculator

Solve all four percentage questions simultaneously: X% of Y, ratio percentage, percentage change, and symmetric percentage difference.

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Dates & Time

Age Calculator

Find exact age in years, months, and days—plus total weeks, days, hours, day of the week born, and next birthday countdown.

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Dates & Time

Date Difference & Business Days Calculator

Calculate total days, years/months/days, weekdays vs. weekends, and net working days between two calendar dates.

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Conversions

Unit Conversion Calculator

Convert length, weight, temperature, volume, area, and speed using exact NIST/SI conversion factors.

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Math

Scientific Calculator

Evaluate nested expressions with trigonometry (Deg/Rad), logs, roots, factorials, constants π and e, plus interactive f(x) curve plotting.

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Finance

ROI Calculator (Return on Investment)

Compute simple ROI %, net profit, return multiple (MOIC), and annualized ROI over your exact holding period.

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Construction

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.

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Construction

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.

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Engineering

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.

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Browse by Category

Mortgages, EMI & personal loans, 12-mode SIP suite, compound interest, PPF, EPF, FD, GST, tax, and retirement calculators.

Exact age, business days & date intervals, payroll time cards, and world time zone converters.

Cumulative GPA, weighted course grades, and final exam target score calculators.

LLM API token pricing, IPv4 CIDR subnetting, password entropy, aspect ratios, and storage unit converters.

Instant conversions across length, weight, temperature, volume, area, and speed with equivalence tables.

Recipe portion scaling, cooking measurement conversions, bill & tip splitting, tire sizes, and shoe sizes.

Saved Favorites & Recent Tools

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Visual Calculation Platform • 71 Interactive Tools

Why Visual Graphs & Textbook Formulas Make Complex Calculations Easy to Understand

CalculatorGraph pairs instant on-device math engines with three custom domain-specific SVG visualizations on every calculator page. Whether you are comparing home mortgage amortization, modeling a Step-Up Mutual Fund SIP, checking clinical WHO & Asia-Pacific BMI contours, sizing NEC copper wire ampacity, or adding carpenter’s tape-measure fractions, seeing the curve and schematic next to the number helps you spot trade-offs immediately.

Every calculator displays its exact mathematical equation in printed textbook notation—with stacked fractions, square-root radicals, and defined variables—alongside a worked example and side-by-side scenario comparison. All inputs stay privately in your browser with zero server uploads.