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SMARTCOSTTOOLS TOOL LIBRARY

30 calculators. Your assumptions.

Search across energy, home, money, vehicle and business planning tools. Every calculator is free and works without an account.

Energy

Electricity bill

Estimate a monthly electricity bill from power consumption and tariff.

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Energy

Appliance annual cost

Understand the running cost of any electrical appliance.

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Energy

LED replacement savings

Compare older bulbs with efficient LED lighting.

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Energy

Solar payback

Estimate simple payback for a rooftop solar investment.

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Energy

Air conditioner cost

Estimate seasonal cooling costs.

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Energy

Generator fuel expense

Budget the fuel needed for backup power.

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Energy

EV charging costs

Estimate the electricity cost of charging an electric car.

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Energy

Standby power cost

Discover the annual cost of always-on electronics.

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Home

Mortgage payment

Calculate principal-and-interest monthly payments.

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Home

Rent vs buy annual cost

Compare estimated annual rent with annual ownership costs.

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Home

Renovation budget

Estimate total project costs with contingency.

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Home

Paint quantity

Estimate liters of paint needed for a room or surface.

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Home

Flooring material

Calculate flooring material with a waste allowance.

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Home

True home annual cost

Build an annual ownership budget.

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Home

Moving budget

Plan moving and relocation expenses.

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Money

Household budget

Estimate the monthly balance after living costs.

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Money

Emergency fund target

Calculate a cash reserve based on essential spending.

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Money

Savings goal timeline

Estimate months required to reach a savings target without interest.

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Money

Debt payoff timeline

Estimate months to pay off a fixed-rate balance.

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Money

Subscription audit

Add up recurring subscription costs.

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Money

Inflation purchasing power

See how a future amount compares in today’s money.

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Vehicle

Fuel cost per month

Estimate monthly petrol or diesel costs.

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Vehicle

Car loan payment

Estimate monthly principal-and-interest car payments.

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Vehicle

Total car annual cost

Combine the major ongoing costs of vehicle ownership.

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Vehicle

Commute cost

Estimate work commute fuel costs.

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Vehicle

EV vs petrol running costs

Compare monthly energy cost for electric and petrol driving.

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Business

Business break-even

Find how many units cover fixed costs.

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Business

Markup and margin

Calculate gross profit margin from cost and price.

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Business

Invoice total

Add tax and discount to an invoice.

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Business

Business cash runway

Estimate how long available cash covers net spending.

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