Renter Numbers

Free renter calculators

Instant answers for rent, deposits, move-in costs, utilities, roommates, and moving. No signup and no raw inputs stored.

Renter calculator directory

12 free tools

Before you rent

Rent Affordability CalculatorEstimate a target monthly rent from annual income, a chosen housing percentage, and recurring housing costs.Apartment Utility Cost EstimatorEstimate monthly electricity, gas, water, internet, trash, parking, and other apartment costs.

Rent math

Prorated Rent CalculatorCompare prorated rent using a 30-day month, 31-day month, and the actual calendar days in the month.Rent Late Fee CalculatorCalculate a flat rent late fee plus daily charges and compare the total with monthly rent.Roommate Rent Split CalculatorSplit rent equally or by custom weights when bedrooms and shared space differ.Rent Increase Percentage CalculatorCalculate the monthly, annual, and percentage change between current and proposed rent.

Moving in

Move-In Cost CalculatorAdd first-month rent, deposits, fees, pet charges, utility setup, and moving expenses.Pet Rent vs Pet Fee CalculatorCompare one-time pet fees, refundable deposits, and monthly pet rent over the lease term.Apartment Moving Cost CalculatorEstimate movers, truck rental, travel, supplies, storage, cleaning, and utility setup.

Moving out

Lease Break Cost CalculatorEstimate a lease-break buyout, notice-period rent, possible vacancy exposure, and moving costs.Security Deposit Return Date CalculatorAdd a return-window estimate to a move-out or tenancy-end date and create a date to monitor.Normal Wear and Tear ChecklistSort common move-out conditions into ordinary wear indicators and items that may need documentation or repair.

Rent math without the friction

Renter Numbers turns common renting questions into quick calculations. Each tool shows the formula, assumptions, examples, and limitations behind its result. Change an input and calculate again to compare apartments, dates, fee structures, or moving scenarios.

Results are planning estimates, not legal or financial advice. When a decision depends on lease wording or local rules, check the document and an official source.

How our calculators work ›

Frequently asked questions

Are the calculators free?

Yes. Every Renter Numbers calculator is free to use without an account, upload, or email address.

Does Renter Numbers store my calculator inputs?

The calculations run in your browser. Renter Numbers does not send raw rent, salary, deposit, date, or lease inputs to analytics.

Are calculator results legal or financial advice?

No. Results are planning estimates. Check your lease, official sources, and qualified professionals when a decision depends on legal or financial facts.

Why can two rent calculators show different answers?

Calculators may use different assumptions, such as a 30-day month instead of actual calendar days. Renter Numbers shows formulas and assumptions so you can compare them.