For Patients
Normal Thyroid Volume in Children
Normal thyroid volume in children varies by age, gender, and body size. See pediatric reference ranges from WHO…
ACR TI-RADS · 2017 White Paper
Score a thyroid nodule in seconds.
Enter the five ultrasound features and nodule size to get the ACR TI-RADS category, estimated malignancy risk, and a size-based biopsy or follow-up recommendation.
Built for radiologists & residents
Explained for patients
ACR TI-RADS · 2017 White Paper
TI-RADS Calculator
Score a thyroid nodule across five ultrasound features to get its ACR TI-RADS category, estimated malignancy risk, and a size-based biopsy or follow-up recommendation.
Total points
0pts
TR1
Benign
Recommendation
—
Complete the features
Select one option in each category above.
Educational use only.
This calculator implements the ACR TI-RADS (2017) point system for reference and learning. It is not endorsed by the American College of Radiology and is not a substitute for professional clinical judgment. Management decisions must be made by a qualified radiologist, endocrinologist, or physician who integrates the full clinical picture. Do not use it to self-diagnose.
Copied
Frequently Asked Questions
Does the TI-RADS calculator give me the biopsy recommendation based on size?
Yes. Enter the five ultrasound features and the nodule’s maximum diameter. The calculator combines the TI-RADS category with the size to show whether FNA biopsy, follow-up ultrasound, or no action is recommended, based on ACR TI-RADS 2017 thresholds.
Can I copy the TI-RADS result to send to my doctor?
Yes. Click the “Copy report” button to copy a formatted text report that includes all selected features, point totals, the TI-RADS category, malignancy risk, and the size-based recommendation. You can paste it into an email or message to your physician.
Does the calculator save my information or is it private?
The calculator runs entirely in your browser. Nothing you enter is transmitted to any server, stored in a database, or logged. Closing the page or clicking Reset permanently discards all inputs. Your data stays on your device only.
Can I use these calculators on my phone?
Yes. The TI-RADS calculator is fully responsive and works on smartphones, tablets, and desktop browsers. No app download is required.
Is the TI-RADS calculator based on the latest ACR guidelines?
Yes. The calculator implements the ACR TI-RADS 2017 white paper by Tessler et al., which is the current and most recent version of the ACR TI-RADS system. There is no newer version as of 2026.
Latest guides
For Clinicians
How to Measure Thyroid Volume on Ultrasound
Step-by-step guide to measuring thyroid volume on ultrasound. Learn the correct planes, caliper placement, ellipsoid calculation, and common…
For Patients
What Your Thyroid Ultrasound Measurements Mean
Understand your thyroid ultrasound measurements. Learn what length, width, depth, and volume mean, normal dimensions, and what happens…
For Clinicians
EU-TIRADS vs ACR TI-RADS: What Is the Difference?
Compare EU-TIRADS and ACR TI-RADS thyroid nodule scoring systems. See how their categories, point systems, and biopsy thresholds…
For Patients
Is TI-RADS 3 Dangerous?
TI-RADS 3 (TR3) is mildly suspicious with only ~5% cancer risk. Learn why TR3 is usually not dangerous…
For Patients
What Does Hypoechoic Mean on a Thyroid Ultrasound?
Hypoechoic means darker than normal tissue on ultrasound. Learn what it means for thyroid nodules, how many TI-RADS…