Olutil stands for Online Utilities — a growing suite of privacy-first, browser-native web tools. This sub-site gives you a set of everyday housing and renting calculators that run entirely in your browser. Split the rent, share the bills, plan a mortgage down payment and estimate a renovation budget — all in one place. 100% Local Processing
Share the monthly rent across rooms and people, equally or by room area.
Split an electricity, water and gas bill across housemates, equally or by usage.
Work out the monthly and yearly property-management fee from area and rate.
Score a rental on price, commute and amenities before you sign.
See the cash needed up front, the monthly payment and how the ratio changes both.
Convert between m², square chi, square feet, square yards and ping.
Estimate a renovation budget from floor area, property type and finish grade.
Check whether furniture fits in a room, with a clearance margin.
Subtract itemised deductions from a rental deposit to see the refund.
Estimate a house move from distance, volume, floor and service.
Total the usable area of each room and see its share.
Get the shared area, shared-area ratio and usable-area ratio.
Estimate a reference yearly property-tax range from value and region.
Compare renting and buying over the years and find the break-even year.
See a reference housing-subsidy range from income, city and family.
All tools on this site do their work locally in your browser. The numbers you type are never sent to any server, so your figures stay on your device. Pick a calculator, fill in the fields, press the calculate button and read or copy the result.
Yes. Every calculator on this site is free to use, with no account and no sign-up required.
No. All results are approximations for general information only, not a quote and not legal, tax or financial advice. Rent, rates, taxes and costs vary with your city, your lease and your local market, so always check your actual lease, your lender and real contractor quotes.
Yes. All processing runs locally in your browser. The numbers you enter are not uploaded to any server, and you can use the tools while offline once the page is loaded.