Everyday Calculators
Handy tools for daily life — calculate tips, sales tax, fuel costs, grades, electricity bills, and more.
Tip Calculator
Calculate tip and split the bill.
Sales Tax Calculator
Add, remove, or find sales tax.
Grade Calculator
Weighted course grade and grade needed.
Fuel Cost Calculator
Trip fuel cost from distance and MPG.
Gas Mileage Calculator
Calculate fuel efficiency and cost.
Speed Calculator
Calculate speed, distance, or time.
Dice Roller
Roll virtual dice with statistics.
Electricity Calculator
Calculate electricity cost and usage.
Mileage Calculator
Calculate trip mileage and reimbursement.
Golf Handicap Calculator
Calculate golf handicap index.
Love Calculator
Calculate love compatibility score.
EV vs Petrol TCO Calculator
5-year cost-of-ownership comparison: electric vs petrol.
EV Charging Cost Calculator
Per-mile cost: home + public charging vs petrol.
Home Solar Panel ROI Calculator
Solar payback and 25-year cumulative return.
Flight Carbon Footprint Calculator
CO₂e for any flight using DEFRA emission factors.
Which Calculator Should I Use?
About Everyday Calculators
Everyday calculators handle the quick math that comes up in daily life — splitting a restaurant bill, figuring out sales tax, estimating fuel costs for a trip, or calculating your electricity usage. These tools are designed to be fast and simple, giving you answers in seconds without needing to remember formulas or pull out a spreadsheet.
Why use these calculators?
- Accurate results based on standard formulas
- Fast and mobile-friendly interface
- Completely free to use with no registration
Best Practices
Always double-check your inputs for accuracy. While our tools are rigorous, for critical financial or health decisions, we recommend consulting with a professional explanation.
Frequently Asked Questions
How do I calculate a tip percentage?
Enter your bill amount and desired tip percentage. Our calculator shows the tip amount and total, with an option to split between multiple people.
Does the sales tax calculator work for all US states?
You can enter any tax rate. Check your local government website for the current rate in your area.
How do I calculate fuel cost for a road trip?
Enter the trip distance, your vehicle's MPG (or km/L), and the current fuel price. Our Fuel Cost Calculator gives you the total fuel cost and gallons needed.
How is electricity cost calculated?
Multiply the appliance wattage by hours of use to get watt-hours, divide by 1,000 for kilowatt-hours (kWh), then multiply by your electricity rate ($/kWh). Our calculator does this automatically.