🧮 53 Calculators · 22 Topics · Updated April 2026
Everyday Calculators
Free calculators for tipping, discounts, electricity costs, gas mileage, and daily life. Quick answers to common questions.
The calculators you reach for most often. Split a restaurant bill, calculate a discount, figure out how much an appliance costs to run, compare gas vs. electric vehicle costs, or plan a road trip fuel budget. Simple inputs, instant answers.
Most Popular
Tip Calculator
Calculate how much to tip at restaurants and split the bill between multiple people.
Discount Calculator
Calculate the final price after a discount and see how much money you save.
Electricity Cost Calculator
Calculate how much it costs to run an appliance based on wattage, usage hours, and electricity rate.
Gas Cost Calculator
Calculate the fuel cost of a road trip based on distance, MPG, and gas price.
EV Savings Calculator
Compare the yearly fuel costs of an electric vehicle vs. a gas car.
Unit Price Calculator
Compare unit prices to find the best deal between different package sizes.
Browse by Topic
Dining
5 calculatorsCalculate tips at any percentage, split bills between groups, or let your restaurant rating set the tip.
Bill Split Calculator
Split a restaurant bill evenly or by individual items among multiple people.
Restaurant Tip by Rating
Calculate your tip based on how you rate the restaurant experience (1-5 stars).
Tip Calculator
Calculate how much to tip at restaurants and split the bill between multiple people.
Tip Split with Percent Calculator
Split with a custom tip %.
Restaurant Tip + Split Calculator
Tip amount and per-person split.
Home
8 calculatorsEstimate carpet cleaning costs and moving expenses.
Carpet Cleaning Cost Calculator
Estimate the cost of professional carpet cleaning based on room sizes.
Moving Cost Calculator
Estimate the cost of moving based on distance, home size, and services needed.
Laundry Cost Calculator
Calculate the cost per load of laundry at home vs laundromat.
Pool Chlorine Dose Calculator
Ounces of chlorine needed.
Hot Tub Chemistry Calculator
Chemical doses for hot-tub water.
Aquarium Volume Calculator
Gallons in a rectangular tank.
Aquarium Heater Wattage Calculator
Watts needed to heat a tank.
Wallpaper Cost Calculator
Rolls × price for a room.
Cooking
1 calculatorConvert between cups, tablespoons, teaspoons, milliliters, and other cooking measurements.
Shopping
5 calculatorsFind the final price after discounts, compare unit prices between package sizes, and never overpay again.
Discount Calculator
Calculate the final price after a discount and see how much money you save.
Unit Price Calculator
Compare unit prices to find the best deal between different package sizes.
Unit Price Calculator
Price per ounce or liter for comparisons.
Coupon Stack Savings Calculator
Final price after stacking.
Bulk vs Single Purchase Calculator
Is bulk really cheaper.
Utilities
1 calculatorCalculate exactly how much it costs to run any appliance based on wattage, usage hours, and your electricity rate.
Auto
2 calculatorsEstimate road trip fuel costs based on distance and MPG, and compare yearly costs of gas cars vs. electric vehicles.
Sustainability
1 calculatorCalculate rainwater harvesting potential from your roof area and local rainfall.
Wellness
1 calculatorTrack screen time and understand its impact on your daily life.
Time
1 calculatorConvert between time zones worldwide.
Pets
3 calculatorsFinance
1 calculatorFamily
2 calculatorsEvents
3 calculatorsSpending
2 calculatorsSubscriptions
1 calculatorHobbies
4 calculatorsPhotography
1 calculatorBudget
7 calculatorsGas Savings Calculator
Annual savings from better MPG.
Cost Per Use Calculator
Cost per use of an item.
Laundromat Cost Calculator
Weekly laundromat cost.
Ride-Share vs Own Car Calculator
Annual cost comparison.
Subscription Annual Cost Calculator
Yearly cost of a monthly subscription.
Streaming Services Total
Total monthly streaming spend.
Water Bill Estimator
Estimated monthly water bill.
Travel
1 calculatorFrequently Asked Questions
How much should I tip?
Standard US restaurant tipping: 15% for adequate service, 18% for good service, 20%+ for excellent service, calculated on the pre-tax subtotal. For delivery, 15-20% with a $3-5 minimum. Hair stylists and taxi/rideshare drivers: 15-20%.
How do I calculate electricity cost per month?
Multiply the appliance wattage by hours used per day, divide by 1,000 to get kWh, multiply by your rate (check your bill, US average is $0.12-0.16/kWh), then multiply by 30 days. Example: a 1,500W space heater used 8 hours/day at $0.12/kWh costs about $43/month.
Is an electric car cheaper to run?
Almost always. At typical 2025 rates, an EV costs about $0.03-0.04 per mile vs. $0.10-0.12 per mile for a gas car. Over 12,000 miles per year, that's roughly $400-500 for an EV vs. $1,200-1,400 for gas, saving about $800-1,000 annually on fuel alone.