Math-based orthodontic treatment planning
Ortho Calculator is a suite of tools designed to support evidence-based treatment planning. It brings together clinically relevant formulas, simplified models, and practical assumptions to help you plan cases in an objective and consistent way.
Mobile app now available
Ortho Calculator is now available as a free download for iPhone and Android.
A focused suite of planning tools
Ortho Calculator includes multiple evidence-based calculators designed to support space analysis, expansion, extractions, and treatment planning across a range of clinical scenarios.
Maxillary Space Calculator
Mandibular Space Calculator
Expansion Calculator
Extraction Calculator
Space Maintenance Calculator
Surgical Expansion Calculator
Asymmetry Calculator
Treatment Plan Calculator
Slot Play Calculator (beta)
Learning resources
Videos
Short, case-based explainer videos clarify rationale, assumptions, and clinical context behind each orthodontic calculator.
Reads
Articles explain planning concepts, methodology, and assumptions informing calculator design and evidence-based decision-making.
References
Curated references summarize key orthodontic literature supporting the formulas, models, and assumptions used throughout Ortho Calculator.
Created by Daniel Nikitas Richmond, DMD, MSc (Orthodontics).
Designed to support objective, math-based orthodontic treatment planning.