Free tools
Free tools for renters
Free tools to help you understand your lease, know your state's laws, and protect your money. No account required.
Available tools
Security Deposit Calculator
Find your state's deposit limits, return deadlines, interest requirements, and late return penalties. Enter your rent and state to see your rights.
All 50 StatesFreeInstant ResultsUse toolLate Fee Calculator
Check whether your landlord's late fee is within legal limits. See your state's grace period, fee caps, and what you can dispute — across all 50 states, D.C. and U.S. territories.
All 50 StatesFreeLegality CheckUse toolRent Affordability Calculator
Find your ideal rent range from your income and debts. Uses the 30% rule, 50/30/20 budget, and debt-to-income ratio so you know what you can comfortably afford.
30% RuleFreeInstant ResultsUse toolLease Exposure Calculator
Estimate the disputable money hiding in a lease — unenforceable late fees, non-refundable charges, and deposit-return penalties — and what a single scan could recover.
FreeInstant ResultsNo Sign-upUse toolRent Increase Calculator
Check if your rent increase is legal in your state. See statewide caps and local rent control limits, and calculate the maximum your landlord can charge.
All 50 StatesFreeLegality CheckUse toolLease Readability Score
Upload your lease and get a plain-language readability score. See how complex your lease is compared to the national average.
Coming soon
Embeddable widgets
Run a tenant association, legal aid site, or housing blog? Embed these calculators on your own site for free with a single snippet.
Explore more tenant resources
- Tenant Rights by StateDeposit, entry, eviction, and rent-increase laws for all 50 states
- Tenant Laws by StateCompare deposits, late fees, notices, and rent control across every state
- Lease Clause LibraryWhat common (and risky) lease clauses really mean
- Lease GlossaryRental and lease terms explained in plain English
- Common Tenant QuestionsStraight answers to the questions renters ask most
- Letter TemplatesState-specific deposit, repair, and negotiation letters
- Is My Lease Legal?Spot illegal or unenforceable clauses and check your lease against state law
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