Money & shopping
tools and calculators.
45 practical tools with clear inputs and explanations. Choose a tool below, or explore a role-based toolbox for a collection that fits your day.
Bill splitter
Good company. Fair shares. Split the bill, tip included.
Unit price calculator
Compare two pack sizes on the same unit basis.
Margin & markup calculator
Distinguish gross margin from markup on cost.
Break-even calculator
Estimate units needed to cover fixed and variable costs.
Currency converter
Convert currencies with dated daily exchange rates, without fees or signups.
Multiple discount calculator
Apply successive discounts and see the effective overall saving.
Subscription cost calculator
Compare recurring charges on monthly and annual bases.
Savings goal calculator
Work out a monthly contribution or time to reach a savings target.
Compound interest calculator
Explore a savings balance with regular contributions and compounding.
Loan repayment calculator
Estimate fixed monthly payments and download an amortisation schedule.
VAT add & remove calculator
Add a supplied VAT rate or extract it from a gross price.
Simple interest calculator
Estimate interest without compounding or additional payments.
Effective annual rate calculator
Compare a nominal annual rate with its compounded annual equivalent.
Inflation-adjusted return
Compare an effective return with inflation over the same period.
Inflation & purchasing power
Explore future prices and the present purchasing power of an amount.
Compound annual growth rate
Find the constant annual growth rate between two positive values.
Return on investment calculator
Compare final proceeds with the complete cost you supply.
Net present value calculator
Discount a series of end-of-period cash flows and subtract the initial cost.
Simple payback period
Estimate when non-negative periodic cash inflows recover an initial outlay.
Present value of regular payments
Discount a fixed series of equal end-of-period payments.
Savings withdrawal scenario
See how a constant monthly withdrawal changes a starting balance.
Loan overpayment calculator
Compare an additional monthly payment with a fixed-rate repayment schedule.
Fixed payment debt payoff
Estimate a payoff schedule from a balance, interest rate and monthly payment.
Cash runway calculator
Compare available cash with a constant monthly operating cash burn.
Working capital calculator
Calculate net working capital and the current ratio.
Inventory turnover calculator
Compare cost of goods sold with average inventory over one period.
Economic order quantity
Explore the basic constant-demand inventory order model.
Reorder point calculator
Combine expected demand during lead time with a supplied safety stock.
Marketplace fee & price calculator
See net proceeds or find a price for your target profit after fees.
Freelance hourly rate planner
Translate an annual revenue requirement into billable hours and a rate.
Gross salary equivalent
Translate annual gross pay into monthly, weekly, daily and hourly equivalents.
Overtime pay calculator
Calculate gross pay with a threshold and overtime multiplier you choose.
Advertising campaign calculator
Calculate CPC, CPM, conversion rate, CPA and ROAS together.
Sales funnel calculator
Compare stage counts and see step and overall conversion rates.
Customer acquisition cost
Compare acquisition expenditure with new customers over the same period.
Customer value scenario
Estimate gross customer profit from order value, frequency and lifetime.
Customer retention rate
Calculate retained customers after removing newly acquired customers.
Invoice line-item calculator
Total quantities and unit prices with a supplied discount, delivery and tax.
Tiered sales commission
Apply progressive commission rates to successive sales bands.
Parcel dimensional weight
Compare actual and volumetric weight using your carrier’s divisor.
Straight-line depreciation
Spread depreciable cost over a supplied useful life.
Meeting cost calculator
Estimate the value of attendee time using your own hourly rates.
Timesheet hours calculator
Add work intervals and unpaid breaks from a local CSV.
Equal instalment plan
Split a remaining amount into cent-exact payments with due dates.
Shared expense settlement
Balance an equal-share expense pool and show suggested transfers.