# Everyday Calculators

- **URL:** https://codeasystem.com/calculators/everyday/
- **Markdown index:** https://codeasystem.com/calculators/everyday/index.md
- **Calculators in this category:** 8

Everyday calculators for fuel costs, gas mileage, electricity bills, bill splitting, pet ages and prorated rent.

Focus areas: Fuel, bills, pets and daily-life math.

## All calculators
- [Fuel Cost Calculator](https://codeasystem.com/calculators/everyday/fuel-cost-calculator.md); Work out the fuel needed and total cost of any trip, then split the cost between passengers.
- [Gas Mileage Calculator](https://codeasystem.com/calculators/everyday/gas-mileage-calculator.md); Measure your car’s real-world MPG from a fill-up, with metric L/100km and cost-per-mile equivalents.
- [Electricity Cost Calculator](https://codeasystem.com/calculators/everyday/electricity-cost-calculator.md); See what any appliance costs to run per day, month and year from its wattage and your electricity rate.
- [Dog Age Calculator](https://codeasystem.com/calculators/everyday/dog-age-calculator.md); Convert your dog’s age into human-equivalent years using size-aware guidelines, with a life-stage summary.
- [Cat Age Calculator](https://codeasystem.com/calculators/everyday/cat-age-calculator.md); Convert cat years to human-equivalent years with the standard veterinary guideline and a life-stage label.
- [Prorated Rent Calculator](https://codeasystem.com/calculators/everyday/prorated-rent-calculator.md); Compute fair partial-month rent for a mid-month move-in or move-out, with the daily rate shown.
- [Unit Price Comparison Calculator](https://codeasystem.com/calculators/everyday/unit-price-comparison-calculator.md); Compare two package sizes by true price per unit and see instantly which product is the better deal.
- [Mileage Reimbursement Calculator](https://codeasystem.com/calculators/everyday/mileage-reimbursement-calculator.md); Total your driven miles at a per-mile reimbursement rate for expense reports and employer claims.

Each link above points to the full Markdown reference for that calculator (inputs, formula, worked example, FAQs). The interactive HTML version lives at the same path without the `.md` suffix.

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Last updated: 2026-08-23 · [Section overview](https://codeasystem.com/calculators/index.md)