What calculators are available on CALCULATORiQ?

CALCULATORiQ offers 54+ professional calculators including mortgage, compound interest, loan, auto loan, retirement, BMI, scientific, physics, chemistry, astronomy, crypto, precious metals, forex, options, bonds, and more. All calculators are free to use with AI powered assistance.

Is CALCULATORiQ free to use?

Yes! All 54+ calculators, Precious Metals Intelligence Hub, Recession Predictor, interactive STEM simulations, 80+ blog articles, and crypto market tools are completely free. Premium educational ebooks are available for purchase.

Does CALCULATORiQ work on mobile devices?

Yes! CALCULATORiQ is a Progressive Web App (PWA) that works seamlessly on all devices - desktop, tablet, and mobile. You can install it on your home screen for quick access.

What AI features does CALCULATORiQ have?

Every calculator includes AI-powered assistance: AI_FinSense for financial calculations, AI_CryptoSense for cryptocurrency guidance, AI_MathSense for STEM calculations, and AI_HealthSense for health metrics. The AI explains formulas and provides educational context.

What STEM simulations are available?

CALCULATORiQ features interactive physics simulations including projectile motion, pendulum, and collision simulators, plus chemistry simulations like titration and reaction rate experiments.

Formula Cheat Sheet

Essential formulas for finance, investing, health & science

Compound InterestTry It

A = P(1 + r/n)^(nt)

Calculate the future value of an investment with compound interest

Variables

A= Final amount

P= Principal (initial investment)

r= Annual interest rate (decimal)

n= Compounding periods per year

t= Time in years

Loan Payment (PMT)Try It

PMT = P × [r(1+r)^n] / [(1+r)^n - 1]

Calculate monthly loan payments

Variables

PMT= Monthly payment

P= Principal loan amount

r= Monthly interest rate

n= Total number of payments

Return on Investment (ROI)Try It

ROI = (Gain - Cost) / Cost × 100%

Measure the profitability of an investment

Variables

ROI= Return on investment percentage

Gain= Total return from investment

Cost= Original investment cost

Simple InterestTry It

I = P × r × t

Calculate interest without compounding

Variables

I= Interest earned

P= Principal amount

r= Annual interest rate (decimal)

t= Time in years

Future ValueTry It

FV = PV × (1 + r)^n

Calculate the future value of a present sum

Variables

FV= Future value

PV= Present value

r= Interest rate per period

n= Number of periods

Net WorthTry It

Net Worth = Total Assets - Total Liabilities

Calculate your overall financial position

Variables

Assets= Everything you own of value

Liabilities= Everything you owe

Debt-to-Income RatioTry It

DTI = (Monthly Debt / Gross Monthly Income) × 100%

Measure your ability to manage monthly payments

Variables

DTI= Debt-to-income ratio percentage

Monthly Debt= Total monthly debt payments

Income= Gross monthly income

Mortgage PaymentTry It

M = P[r(1+r)^n]/[(1+r)^n-1] + T + I

Calculate total monthly mortgage payment including taxes and insurance

Variables

M= Monthly payment

P= Principal loan amount

r= Monthly interest rate

n= Number of payments

T= Monthly property tax

I= Monthly insurance

Finance Formulas

Compound InterestTry It

A = P(1 + r/n)^(nt)

Calculate the future value of an investment with compound interest

Variables

A= Final amount

P= Principal (initial investment)

r= Annual interest rate (decimal)

n= Compounding periods per year

t= Time in years

Loan Payment (PMT)Try It

PMT = P × [r(1+r)^n] / [(1+r)^n - 1]

Calculate monthly loan payments

Variables

PMT= Monthly payment

P= Principal loan amount

r= Monthly interest rate

n= Total number of payments

Return on Investment (ROI)Try It

ROI = (Gain - Cost) / Cost × 100%

Measure the profitability of an investment

Variables

ROI= Return on investment percentage

Gain= Total return from investment

Cost= Original investment cost

Simple InterestTry It

I = P × r × t

Calculate interest without compounding

Variables

I= Interest earned

P= Principal amount

r= Annual interest rate (decimal)

t= Time in years

Future ValueTry It

FV = PV × (1 + r)^n

Calculate the future value of a present sum

Variables

FV= Future value

PV= Present value

r= Interest rate per period

n= Number of periods

Net WorthTry It

Net Worth = Total Assets - Total Liabilities

Calculate your overall financial position

Variables

Assets= Everything you own of value

Liabilities= Everything you owe

Debt-to-Income RatioTry It

DTI = (Monthly Debt / Gross Monthly Income) × 100%

Measure your ability to manage monthly payments

Variables

DTI= Debt-to-income ratio percentage

Monthly Debt= Total monthly debt payments

Income= Gross monthly income

Mortgage PaymentTry It

M = P[r(1+r)^n]/[(1+r)^n-1] + T + I

Calculate total monthly mortgage payment including taxes and insurance

Variables

M= Monthly payment

P= Principal loan amount

r= Monthly interest rate

n= Number of payments

T= Monthly property tax

I= Monthly insurance

Market Formulas

Dividend YieldTry It

Yield = (Annual Dividend / Stock Price) × 100%

Calculate the annual return from dividends relative to stock price

Variables

Yield= Dividend yield percentage

Annual Dividend= Total dividends paid per year

Stock Price= Current share price

Price-to-Earnings RatioTry It

P/E = Stock Price / Earnings Per Share

Measure a company's valuation relative to its earnings

Variables

P/E= Price-to-earnings ratio

Stock Price= Current market price per share

EPS= Earnings per share

Total Stock ReturnTry It

Return = [(End Price - Start Price + Dividends) / Start Price] × 100%

Calculate the total return including price change and dividends

Variables

End Price= Selling price

Start Price= Purchase price

Dividends= Total dividends received

Bond YieldTry It

Current Yield = (Annual Coupon / Market Price) × 100%

Calculate the annual return on a bond at its current price

Variables

Annual Coupon= Annual interest payment

Market Price= Current bond price

Crypto Profit/LossTry It

P/L = (Current Price - Purchase Price) × Quantity

Calculate gains or losses on cryptocurrency holdings

Variables

P/L= Profit or loss

Current Price= Current market price

Purchase Price= Original buy price

Quantity= Number of coins/tokens

Forex Pip ValueTry It

Pip Value = (Pip / Exchange Rate) × Lot Size

Calculate the value of a single pip movement in forex

Variables

Pip= Usually 0.0001 for most pairs

Exchange Rate= Current currency pair rate

Lot Size= Position size (standard lot = 100,000)

Health Formulas

Body Mass Index (BMI)Try It

BMI = weight(kg) / height(m)²

Assess body weight relative to height

Variables

BMI= Body mass index value

weight= Body weight in kilograms

height= Height in meters

Basal Metabolic Rate (Mifflin-St Jeor)Try It

Men: BMR = 10×weight + 6.25×height - 5×age + 5 Women: BMR = 10×weight + 6.25×height - 5×age - 161

Calculate calories burned at rest

Variables

BMR= Basal metabolic rate (kcal/day)

weight= Weight in kilograms

height= Height in centimeters

age= Age in years

Total Daily Energy ExpenditureTry It

TDEE = BMR × Activity Factor

Calculate total calories burned including activity

Variables

TDEE= Total daily energy expenditure

BMR= Basal metabolic rate

Activity Factor= 1.2 (sedentary) to 1.9 (very active)

Body Fat Percentage (Navy Method)Try It

Men: %Fat = 495/(1.0324 - 0.19077×log(waist-neck) + 0.15456×log(height)) - 450

Estimate body fat using body measurements

Variables

waist= Waist circumference in cm

neck= Neck circumference in cm

height= Height in cm

GFR (eGFR - CKD-EPI)Try It

eGFR = 141 × min(SCr/κ,1)^α × max(SCr/κ,1)^-1.209 × 0.993^Age × (1.018 if female)

Estimate kidney function from creatinine

Variables

eGFR= Estimated glomerular filtration rate

SCr= Serum creatinine (mg/dL)

κ= 0.7 (female) or 0.9 (male)

α= -0.329 (female) or -0.411 (male)

STEM Formulas

Ohm's LawTry It

V = I × R

Relate voltage, current, and resistance

Variables

V= Voltage in volts

I= Current in amperes

R= Resistance in ohms

Kinetic EnergyTry It

KE = ½mv²

Calculate the energy of motion

Variables

KE= Kinetic energy in joules

m= Mass in kilograms

v= Velocity in meters per second

pH CalculationTry It

pH = -log₁₀[H⁺]

Measure the acidity of a solution

Variables

pH= Power of hydrogen

[H⁺]= Hydrogen ion concentration (mol/L)

Ideal Gas LawTry It

PV = nRT

Relate pressure, volume, temperature and moles of a gas

Variables

P= Pressure in pascals

V= Volume in cubic meters

n= Number of moles

R= Gas constant (8.314 J/mol·K)

T= Temperature in Kelvin

Gravitational ForceTry It

F = G × (m₁ × m₂) / r²

Calculate the gravitational attraction between two masses

Variables

F= Force in newtons

G= Gravitational constant (6.674×10⁻¹¹ N·m²/kg²)

m₁, m₂= Masses in kilograms

r= Distance between centers in meters

Dilution EquationTry It

C₁V₁ = C₂V₂

Calculate concentration after dilution

Variables

C₁= Initial concentration

V₁= Initial volume

C₂= Final concentration

V₂= Final volume