Free tools
Medical Billing Calculators & RCM Tools
Free calculators for denial rates, A/R performance, collection rates, revenue risk and billing costs, each with its formula explained in plain words.
Free calculators for practice owners and billing teams
Use Fastora's free medical billing calculators to evaluate denial rates, A/R performance, collection rates, revenue risk, billing costs and other key revenue cycle metrics. Every tool runs in your browser on the figures you enter: no account, no sign-up, and nothing is stored or sent anywhere.
The tools are grouped the way billing work is grouped. Revenue and ROI tools size the money, claims and denials tools find where claims fail, A/R tools show how fast billed work becomes cash, reimbursement tools check what a claim should pay, and revenue risk tools price the delays that paperwork can cause.
Free tools
All calculators
Revenue & ROI
Claims & Denials
A/R & Collections
Reimbursement
Revenue Risk
Self-assessments
How to choose a calculator
Start with the number your last billing meeting argued about. If cash feels slow, begin with days in A/R and the A/R aging calculator. If denials dominate the conversation, the denial rate calculator and revenue leak calculator turn the argument into dollars. If the question is whether billing costs too much, use the outsourcing cost calculator and the ROI calculator with the same figures, so the comparison is fair.
Each calculator page explains its formula in plain words, tells you where the input figures live in your own reports, and links to the service or guide that works on that number. The formulas are also collected in our medical billing KPIs guide, which shows how the measures fit together on one dashboard.
Estimates, honestly labelled
These are estimates for educational and operational planning, built from your figures. They are not guarantees of reimbursement, savings or recovery, and no calculator here quotes Medicare or commercial fee schedules: where a rate is needed, you enter your own contracted allowed amount. Do not enter patient-identifiable or protected health information into any calculator.
When an estimate suggests real money is stuck, the next step is evidence. A free medical billing audit replaces estimates with your actual claim-level numbers, and you can talk to Fastora about any figure on this page.
FAQ
Calculator questions
Still have a question? Talk to our team about your billing workflow.
Are these calculators free to use?
Yes. Every calculator runs in your browser with no account and no sign-up. You get the full result immediately; nothing is hidden behind a form.
Is my data stored?
No. The calculations happen on your device. Do not enter patient-identifiable or protected health information; these tools are for practice-level figures only.
Do the calculators give official payer rates?
No. Where a rate is needed, you enter your own contracted allowed amount. Fastora does not publish Medicare or commercial fee schedules here because they change and vary by contract and locality.
What should I do with a worrying result?
Treat it as a pointer, then verify with your own reports. A free billing assessment turns any of these estimates into claim-level evidence from your practice before you decide on changes.
Calculate your RCM performance, then check it against reality
Run the tools above on your figures, then book a free billing assessment and we will verify the same numbers from your actual claims, denials and A/R, in writing.
Try the medical billing cost calculator
The medical billing cost calculator on this page estimates what outsourced billing would run for your practice — built from your monthly collections, claim volume, and scope, not from a generic rate card. It is an estimate for planning, not a quote: a written quote follows a free assessment of your own claims, because specialty, payer mix, and old A/R change the real number. Run the estimate, then compare it against what billing costs you today — staff time, software, clearinghouse fees, and the revenue lost to denials nobody works. Related tools: billing ROI calculator, revenue leak calculator, see how pricing is built.
Therapy practices: our 8-minute rule calculator helps you verify timed units.