Home and energy calculators for every project
Whether you want to know what an air conditioner costs to run all summer or how many gallons of paint a room needs, these calculators give you a reliable starting number.
Calculators in this collection
- Electricity Cost Calculator
Turn appliance hours into real costs.
- Home Electricity Cost Calculator
Turn kWh usage into a dollar cost.
- Appliance Cost Calculator
See what a device costs to run.
- AC Running Cost Calculator
Estimate the cost of cooling.
- Heating Cost Calculator
Estimate the cost of electric heat.
- Paint Calculator
Estimate gallons of paint you need.
- Flooring Calculator
Find square footage plus waste.
- Tile Calculator
Count tiles for a surface with waste.
- Concrete Calculator
Estimate cubic yards of concrete.
- Mulch Calculator
Find cubic yards of mulch to buy.
- Gravel Calculator
Estimate yards and tons of gravel.
- Moving Cost Calculator
Add up a DIY move's total cost.
Frequently asked questions
Where do I find my electricity rate in cents per kWh?
Look for the energy supply or usage rate line on your latest utility bill. If your plan uses time-of-use pricing, choose the rate that matches when the appliance normally runs.
Do the paint and flooring calculators include waste?
The material calculators add a recommended overage to account for cuts, mistakes, and future repairs. You can adjust the percentage to match your project's complexity.