About Us
UTELVANI helps households understand how electricity and water use translate into costs. Start with a quick estimate on the home calculator, then use a dedicated tool when you need to work through a bill, compare two routines or keep a spending history.
What you can do
Use your utility’s rates and your own usage figures to test a question such as how much a dryer cycle costs, how a service charge affects a bill, or how much water a measured leak could waste over a week. You can use the calculators without an account.
Our tools
- Electricity & Water Bill Calculator. Estimate bill charges using metered usage, flat or tiered rates, a service fee and tax.
- Appliance Energy Cost Calculator. Estimate an appliance’s energy use and running cost from its power and operating pattern.
- Utility Bill Detective. Compare two statements and separate changes in usage, rates and the remaining bill difference.
- What If Savings Simulator. Compare the estimated electricity charges for two usage scenarios.
- Household Water Usage Calculator. Estimate the volume and cost of a household activity using its flow rate and duration or its volume per use.
- Water Leak Cost Estimator. Estimate water lost and the associated charge from a measured leak rate and duration.
- Hot Water Cost Calculator. Estimate water and heating charges using volume, temperature rise and heater efficiency.
- Monthly Utility Tracker. Record actual bills and budgets locally and compare compatible monthly records.
How calculations work
The tools convert inputs into units used for billing, apply the entered rate and show the calculation behind the result. For example, a device drawing 500 W for two hours uses 1 kWh. At USD 0.25 per kWh, its estimated energy charge is USD 0.25. The tracker instead works with the actual bill amounts and budgets you enter.
Accuracy and limitations
Use the rates, units and billing dates on your provider’s statement. Equipment can draw less or more than its rated power during use, and bills may include taxes, credits or charges outside the selected model. Use the results to understand or compare assumptions and refer to your provider for your account’s actual charges.
Guides and worked examples
Explore 24 guides on topics including bill units, appliance power and local backups, or work through one of 84 examples with sample inputs, calculations and limitations. The examples use illustrative scenarios and rates.
Privacy and data handling
Calculations run in your browser. Records and settings you save stay in browser storage, where you can manage them or download a backup. The Privacy Policy explains how this differs from website requests and email correspondence.
Contact us
Visit Contact Us to report a problem, ask about a calculation or suggest a guide.