Financial tool map
Everyday money
Budgets, discounts, purchasing power, tips, and day-to-day comparisons.
Choose the tool whose inputs and output match your task. Check each calculator’s assumptions and limitations before using its result.
Latest update:
Everyday money tools handle the small comparisons that quietly change a budget: what a service really costs, what a sale actually saves, and what a future amount means today. The tip calculator computes gratuity, total bill, and per-person split for any service bill. The discount calculator compares percent-off, fixed-dollar, stacked, and buy-more-get-free deals on a common price basis, with an after-tax view. The inflation calculator moves an amount between years at an average annual rate to test purchasing-power assumptions; the time value of money calculator shifts a single lump sum between present and future value under different compounding conventions. Find related budgeting and savings tools in the Financial collection.
27 of 27 calculators
Everyday money27 calculators
Basis Point Calculator
Convert basis points to percentage points, decimal value, permille, dollar impact, and the new rate after a bps change.
Updated
Consumer Surplus Calculator
Estimate consumer surplus per unit, total buyer surplus, and the linear demand triangle between willingness to pay and market price.
Updated
Cross Price Elasticity of Demand Calculator
Calculate cross price elasticity of demand with the midpoint method and interpret substitutes, complements, or weakly related goods.
Updated
Currency Forward Calculator
Estimate a theoretical FX forward price from spot, term, and two currency interest rates using the calculator's 360-day parity convention.
Updated
Deadweight Loss Calculator
Estimate deadweight loss as the triangular welfare loss from a price wedge and quantity change caused by taxes, controls, monopoly, or other distortions.
Updated
Discount Calculator
Compare percent-off, dollar-off, known final price, stacked, buy-more-get-free, and after-tax discounts with savings and effective discount shown.
Updated
Discount Rate Calculator
Solve the nominal annual discount rate that connects present value, future value, term, compounding frequency, and optional recurring cash flows.
Updated
Fisher Equation Calculator
Compute the exact Fisher equation real rate from a nominal interest rate and expected inflation, with the subtraction approximation shown for comparison.
Updated
GDP Deflator Calculator
Calculate the GDP deflator from nominal GDP and real GDP, then compare it with a previous deflator to estimate economy-wide price inflation.
Updated
Inflation Calculator
Estimate how an amount changes between years using an average annual inflation rate, including adjusted amount, dollar change, and total inflation factor.
Updated
Markdown Calculator
Find the retail markdown amount, markdown percentage, and sale-price share from an original selling price and actual selling price.
Updated
Money Counter Calculator
Total bills and coins by denomination, currency, and quantity with a line-by-line cash-count breakdown.
Updated
Money Supply Calculator
Build M0, monetary base, M1, M2, M3, M4, and money zero maturity from currency, deposits, money market funds, time deposits, and market instruments.
Updated
Verified
Month-over-Month Growth Calculator
Calculate month-over-month growth, absolute change, CMGR, and next-month projection from two monthly values with a clear MoM formula and example.
Updated
Moving Average Calculator
Calculate the latest simple moving average from a chronological price list, compare it with the latest price, and see whether the average is rising, falling, or flat.
Updated
Price Elasticity of Supply Calculator
Calculate price elasticity of supply with midpoint or standard percentage changes and interpret how responsive producers are to price changes.
Updated
Price/Quantity Calculator
Compare two package sizes by unit price, price difference, savings rate, and practical value before choosing the better buy.
Updated
Real GDP Calculator
Convert nominal GDP into inflation-adjusted real GDP with a GDP deflator, and see the price-level adjustment used in the calculation.
Updated
Scrap Gold Calculator
Calculate a gold-value scenario from entered weight, purity, price per troy ounce, and scenario percentage assumptions.
Updated
Verified
Software Contract Value Calculator
Calculate discounted SaaS seat price, monthly contract cost, annual contract value, total contract value, seats, and effective discount.
Updated
Spending Multiplier Calculator
Calculate a simplified classroom spending multiplier and modeled output change from MPC or MPS.
Updated
Verified
Taylor Rule Calculator
Calculate a generalized Taylor-type policy-rate benchmark from prior-four-quarter inflation and real-output inputs.
Updated
Verified
Time Value of Money Calculator
Move one lump sum between present and future value using periodic nominal or continuous compounding.
Updated
Tip Calculator
PopularCalculate gratuity, total bill, and per-person split from a bill amount, tip percentage, and party size for restaurants, delivery, salons, rides, and other service bills.
Updated
Verified
Triple Discount Calculator
Combine three successive percentage discounts, show intermediate prices, and convert the stack into one equivalent single discount.
Updated
Velocity of Money Calculator
Evaluate a user-defined exchange-equation ratio using same-period, same-geography, same-currency inputs; it is not comparable to an official money-velocity series.
Updated
Week-over-Week Growth Calculator
Calculate week-over-week growth, absolute change, following-to-initial ratio, and weekly compound growth for short-term metrics.
Updated
Basis Point Calculator
Convert basis points to percentage points, decimal value, permille, dollar impact, and the new rate after a bps change.
Updated
Consumer Surplus Calculator
Estimate consumer surplus per unit, total buyer surplus, and the linear demand triangle between willingness to pay and market price.
Updated
Cross Price Elasticity of Demand Calculator
Calculate cross price elasticity of demand with the midpoint method and interpret substitutes, complements, or weakly related goods.
Updated
Currency Forward Calculator
Estimate a theoretical FX forward price from spot, term, and two currency interest rates using the calculator's 360-day parity convention.
Updated
Deadweight Loss Calculator
Estimate deadweight loss as the triangular welfare loss from a price wedge and quantity change caused by taxes, controls, monopoly, or other distortions.
Updated
Discount Calculator
Compare percent-off, dollar-off, known final price, stacked, buy-more-get-free, and after-tax discounts with savings and effective discount shown.
Updated
Discount Rate Calculator
Solve the nominal annual discount rate that connects present value, future value, term, compounding frequency, and optional recurring cash flows.
Updated
Fisher Equation Calculator
Compute the exact Fisher equation real rate from a nominal interest rate and expected inflation, with the subtraction approximation shown for comparison.
Updated
GDP Deflator Calculator
Calculate the GDP deflator from nominal GDP and real GDP, then compare it with a previous deflator to estimate economy-wide price inflation.
Updated
Inflation Calculator
Estimate how an amount changes between years using an average annual inflation rate, including adjusted amount, dollar change, and total inflation factor.
Updated
Markdown Calculator
Find the retail markdown amount, markdown percentage, and sale-price share from an original selling price and actual selling price.
Updated
Money Counter Calculator
Total bills and coins by denomination, currency, and quantity with a line-by-line cash-count breakdown.
Updated
Money Supply Calculator
Build M0, monetary base, M1, M2, M3, M4, and money zero maturity from currency, deposits, money market funds, time deposits, and market instruments.
Updated
Verified
Month-over-Month Growth Calculator
Calculate month-over-month growth, absolute change, CMGR, and next-month projection from two monthly values with a clear MoM formula and example.
Updated
Moving Average Calculator
Calculate the latest simple moving average from a chronological price list, compare it with the latest price, and see whether the average is rising, falling, or flat.
Updated
Price Elasticity of Supply Calculator
Calculate price elasticity of supply with midpoint or standard percentage changes and interpret how responsive producers are to price changes.
Updated
Price/Quantity Calculator
Compare two package sizes by unit price, price difference, savings rate, and practical value before choosing the better buy.
Updated
Real GDP Calculator
Convert nominal GDP into inflation-adjusted real GDP with a GDP deflator, and see the price-level adjustment used in the calculation.
Updated
Scrap Gold Calculator
Calculate a gold-value scenario from entered weight, purity, price per troy ounce, and scenario percentage assumptions.
Updated
Verified
Software Contract Value Calculator
Calculate discounted SaaS seat price, monthly contract cost, annual contract value, total contract value, seats, and effective discount.
Updated
Spending Multiplier Calculator
Calculate a simplified classroom spending multiplier and modeled output change from MPC or MPS.
Updated
Verified
Taylor Rule Calculator
Calculate a generalized Taylor-type policy-rate benchmark from prior-four-quarter inflation and real-output inputs.
Updated
Verified
Time Value of Money Calculator
Move one lump sum between present and future value using periodic nominal or continuous compounding.
Updated
Tip Calculator
PopularCalculate gratuity, total bill, and per-person split from a bill amount, tip percentage, and party size for restaurants, delivery, salons, rides, and other service bills.
Updated
Verified
Triple Discount Calculator
Combine three successive percentage discounts, show intermediate prices, and convert the stack into one equivalent single discount.
Updated
Velocity of Money Calculator
Evaluate a user-defined exchange-equation ratio using same-period, same-geography, same-currency inputs; it is not comparable to an official money-velocity series.
Updated
Week-over-Week Growth Calculator
Calculate week-over-week growth, absolute change, following-to-initial ratio, and weekly compound growth for short-term metrics.
Updated
Frequently asked questions
- What does the money supply calculator measure?
- The calculator totals several monetary aggregates from component inputs. It starts with physical currency for M0, adds Federal Reserve deposits for the monetary base, builds broader deposit measures for M1 and M2, then extends to M3, M4, and money zero maturity.
- How is M1 different from M2 in this calculator?
- In this calculator, M1 includes currency, demand deposits, travelers checks, checkable deposits, and savings accounts. M2 then adds money market funds and time deposits under 100,000 dollars. Official definitions vary by country and can change over time, so verify the release.
- Why are the inputs entered in billions?
- Money aggregates are very large, so the calculator labels each input in billions to keep numbers readable. The formulas are simple addition, so the unit only needs to be consistent. Do not mix billions, millions, and raw dollars in the same calculation.
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