Everyday Money & Planning
Every everyday money & planning calculator on CalcEngines — unit converters, derived indices and interpretive tools, each with its formula, a worked example and the reference intervals it is judged against.
14 calculators in this section
- 50/30/20 Budget CalculatorSplit your take-home pay into needs, wants and savings with the 50/30/20 rule — or with your own percentages, if your city's rents make 50% for needs unrealistic.
- Child Education PlannerWhat your child's education could cost by the time they start, what your savings for it will have grown to, and the monthly SIP that would close the gap.
- Cost of Car Ownership CalculatorWhat a car really costs over the years you keep it — the value it loses, fuel, insurance, servicing, parking and loan interest — in total, per month and per kilometre, with the return your down payment could have earned instead.
- Currency Converter (Your Rate)Convert an amount at the rate you are actually offered, and see what the bank's or card's markup and fees cost you against the mid-market rate — for remittances, money changers and card spends abroad.
- Discount CalculatorThe price after a discount and how much you save — including a second discount on top of the first, where 20% plus 10% comes to 28% off, not 30%.
- Emergency Fund CalculatorHow big an emergency fund to aim for, in months of essential expenses, how far you are from it, and how many months of saving will close the gap. The month count is a rule of thumb, not a rule.
- Fuel Cost CalculatorWhat your driving costs in fuel — per trip, per month, per kilometre and per year — with the cost split among passengers and, if you like, an electric car's running cost beside it.
- Inflation CalculatorWhat something costing a given amount today will cost after a number of years at the inflation rate you choose, what the same money will buy then, and the rate implied by two prices years apart.
- Net Worth CalculatorEverything you own minus everything you owe: your net worth, with totals and the share of your assets that is funded by debt.
- Percentage CalculatorThe three everyday percentage questions — X% of Y, X as a percentage of Y, and the percentage change from one number to another — plus the one people most often get wrong: the price before a percentage was added.
- Rule of 72 CalculatorHow long money takes to double at a given rate — by the rule of 72, by the exact formula, and how far apart the two are. The same arithmetic tells you how fast inflation halves what money buys.
- Subscription Cost CalculatorAdd up up to five monthly subscriptions, see the yearly total, what annual plans would save, and what the same money could grow to if it were invested instead.
- Tip and Bill Split CalculatorAdd a tip to a bill and split it between friends: the tip, the total and what each person pays, rounded up to a convenient note if you like — and a check that you are not tipping on top of a service charge you have already paid.
- Unit Price CalculatorCompare two or three pack sizes by price per kilogram, litre or piece, find the cheapest, and see how much less it costs per unit.