Compound Interest
A = P(1 + r/n)^(nt)
Calculate compound interest
Simple Interest
I = P × r × t
Calculate simple interest on a principal amount
EMI Calculator
EMI = P × r × (1 + r)ⁿ ÷ ((1 + r)ⁿ - 1)
Calculate monthly loan payment (EMI - Equated Monthly Installment)
Sales Tax / GST Calculator
Total = Amount + (Amount × Rate / 100)
Calculate tax amount and total price including sales tax, GST or VAT
Discount Calculator
Discount = Original Price × (Discount Percentage ÷ 100)
Calculate discount amount and final price
Tip Calculator
Tip = Bill × (Tip Percentage ÷ 100)
Calculate tip amount and total bill including tip
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Profit Margin Calculator
Margin = ((Revenue - Cost) / Revenue) × 100
Calculate profit margin and markup percentage
ROI Calculator
ROI = ((Gain - Cost) / Cost) × 100
Calculate return on investment as a percentage
Profit/Loss Calculator
Profit/Loss = Selling Price - Cost Price
Calculate profit or loss percentage
CAGR Calculator
CAGR = ((End / Begin)^(1/n) - 1) × 100
Calculate the compound annual growth rate of an investment
Break-Even Point
BEP = Fixed Costs / (Price - Variable Cost)
Find how many units must be sold to cover all costs
Straight Line Depreciation
Depreciation = (Cost - Salvage) / Useful Life
Calculate yearly depreciation of an asset using the straight line method
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Future Value Calculator
FV = PV × (1 + r)ⁿ
Find what an investment will be worth after n years
Present Value Calculator
PV = FV / (1 + r)ⁿ
Find what a future amount is worth in today's money
Salary to Hourly Rate
Hourly = Annual Salary / (Hours per Week × 52)
Convert an annual salary into an hourly pay rate
Family Budget Calculator
Needs 50% + Wants 30% + Savings 20%
Split monthly take-home income into needs, wants and savings using the 50/30/20 budgeting rule
Student Loan Calculator
M = P × r(1+r)ⁿ / ((1+r)ⁿ − 1)
Calculate the fixed monthly payment on a student loan from its principal, interest rate and term
College Savings Calculator
FV = PMT × [((1+r)ⁿ − 1) / r]
Estimate the future value of a monthly college savings contribution with compound growth
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Life Insurance Needs Calculator
Need = (Income × Years) + Debts − Savings
Estimate how much life insurance coverage a family needs to replace lost income and cover debts
Braces Cost Calculator
Monthly Payment = (Total Cost − Down Payment) ÷ Months
Estimate the monthly payment for orthodontic braces on a payment plan
Tutoring Cost Calculator
Total Cost = Rate × Hours per Week × Weeks
Estimate the total cost of tutoring sessions over a school term
Mortgage Calculator
M = L × r(1 + r)ⁿ ÷ ((1 + r)ⁿ − 1) + tax + insurance
Monthly home loan payment including property tax and insurance, from the home price and down payment
SIP Calculator
FV = P × ((1 + i)ⁿ − 1) ÷ i × (1 + i)
Maturity value of a Systematic Investment Plan (fixed monthly investment) at an expected annual return
Fixed Deposit (FD) Calculator
A = P × (1 + r/4)^(4t)
Maturity amount of a fixed deposit with quarterly compounding, as most banks use
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Recurring Deposit (RD) Calculator
M = Σ R × (1 + r/4)^(4 × months left ÷ 12)
Maturity value of a recurring deposit — a fixed amount saved every month, compounded quarterly
GST / VAT Calculator
Add: Total = Amount × (1 + rate) · Remove: Base = Amount ÷ (1 + rate)
Add GST/VAT to a price or remove it from a tax-inclusive price. Mode: 1 = add tax, 2 = remove tax
Inflation Calculator
Future cost = Today's cost × (1 + inflation)ᵗ
What something that costs a given amount today will cost after years of inflation, and how much buying power money loses
Retirement Savings Calculator
FV = S(1 + i)ⁿ + P × ((1 + i)ⁿ − 1) ÷ i
Projected retirement balance from current savings plus a monthly contribution
Savings Goal Calculator
P = Goal × i ÷ ((1 + i)ⁿ − 1)
How much to save each month to reach a target amount by a deadline
Fuel Cost Calculator
Cost = (Distance ÷ Efficiency) × Price per litre
Trip fuel cost from distance, your vehicle's fuel efficiency and the fuel price
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