ProReckoner's allied health calculators are built for physiotherapists, occupational therapists, speech pathologists, optometrists, support coordinators and other NDIS-facing professionals. Tools cover NDIS planning (plan budget pacing, support hours, assistive technology funding), clinical and safety screening (REBA manual handling risk, RPE-based exercise progression, rehabilitation outcome measurement), communication and literacy (functional reading age, speech rate and fluency), vision (Snellen/LogMAR conversion, contact lens power) and practice management (caseload capacity, home modification costs). Built for Australian NDIS contexts, with international references where relevant.
NDIS Planning
3 toolsNDIS Plan Budget Calculator
Sustainable monthly spend and budget pacing from your total plan budget, spend to date and time elapsed. Free NDIS planning calculator for participants, plan managers and support coordinators. Australia only.
Sustainable monthly spend = Remaining budget ÷ Months remaining
Ideal even-pacing spend to date = (Total budget ÷ Plan length) × Months elapsed. Comparing actual spend against this benchmark shows whether the plan is tracking ahead, behind or on pace.
NDIS Support Hours Estimator
Maximum sustainable weekly and daily support worker hours from your Core Supports budget, hourly rate and plan length. Free NDIS planning calculator. Australia only.
Max weekly hours = Core supports budget ÷ (hourly rate × weeks remaining)
This divides the remaining Core Supports budget evenly across the remaining weeks of the plan, at the quoted hourly rate — giving the maximum weekly hours the budget can sustain without running out early.
Assistive Technology Funding Estimator
NDIS Assistive Technology funding category and typical approval pathway from item cost — Low Cost, Mid Cost or High Cost AT. Free planning calculator for allied health professionals and support coordinators. Australia only.
Under $1,500: Low Cost AT
$1,500–$14,999: Mid Cost AT
$15,000+: High Cost AT
NDIS Assistive Technology is categorised by cost tier, with increasing assessment and quoting requirements as cost rises, reflecting the greater complexity and risk of higher-cost equipment.
Clinical & Safety Screening
3 toolsManual Handling Risk Score (REBA)
REBA (Rapid Entire Body Assessment) score and risk level from trunk, neck, leg, arm, wrist, force, coupling and activity inputs. Free ergonomic manual handling risk calculator based on the Hignett & McAtamney (2000) method.
Score A = Table A[Neck,Trunk,Legs] + Force
Score B = Table B[Upper arm,Lower arm,Wrist] + Coupling
Final REBA = Table C[Score A,Score B] + Activity score
REBA scores Group A (trunk, neck, legs) and Group B (arms, wrist) separately, adds force/coupling adjustments, combines them via Table C, then adds an activity score for static/repetitive/unstable postures.
Exercise Load & Progression (RPE)
Estimated 1-rep max and suggested next-session load from reps performed and RPE (rate of perceived exertion). Free calculator for physiotherapists, exercise physiologists and trainers using RPE-based programming.
Reps-in-reserve (RIR) = 10 − RPE
Estimated 1RM = Load × (1 + (Reps + RIR) / 30)
RPE (Borg CR-10 resistance training scale) estimates how many more reps could have been performed. Combining reps performed with reps-in-reserve gives a proxy for "reps at true failure", which feeds a standard Epley-style 1RM estimation formula.
Rehabilitation Outcome Measure Scorer
Patient-Specific Functional Scale (PSFS) change score from baseline and follow-up activity ratings, compared against the published minimal clinically important difference (MCID). Free outcome measure calculator for allied health professionals.
Change score = Average(follow-up scores) − Average(baseline scores)
Each activity is scored 0 (unable to perform) to 10 (able to perform at pre-injury/pre-condition level). The average change across activities is compared to the published minimal clinically important difference (MCID) of approximately 2 points per activity, or 3 points for the average score.
Communication & Literacy
2 toolsFunctional Literacy / Reading Age Estimator
Functional literacy band (ACSF-informed) and reading age from a pasted text sample — built for everyday documents like NDIS plans, appointment letters and service agreements. Free calculator for speech pathologists, disability support workers and allied health professionals.
FK Grade = 0.39×(words/sentences) + 11.8×(syllables/words) − 15.59
The FK Grade Level is mapped to an approximate Australian Core Skills Framework (ACSF) literacy band, reframed around everyday functional tasks relevant to disability and health support (reading service agreements, medication labels, appointment letters) rather than school year level.
Speech Rate & Fluency Calculator
Speech rate (syllables per minute) and percent syllables stuttered (%SS) from a timed speech sample. Free calculator for speech pathologists assessing rate and fluency.
Speech rate (syll/min) = Syllables ÷ (Time in seconds ÷ 60)
%SS = (Disfluent syllables ÷ Total syllables) × 100
Speech rate reflects overall speaking pace; %SS (percent syllables stuttered) is a standard fluency severity metric used alongside qualitative disfluency-type observation.
Vision
2 toolsVisual Acuity Converter (Snellen/LogMAR)
Convert Snellen visual acuity to LogMAR and decimal VA, and between metric (6/6) and imperial (20/20) Snellen notation. Free calculator for optometrists, orthoptists and allied health professionals.
LogMAR = log10(Denominator / Numerator)
Decimal VA = Numerator / Denominator
Use the Metric/Imperial toggle at the top of the page to set whether your Snellen fraction is metric (6/x, tested at 6 metres) or imperial (20/x, tested at 20 feet) — both represent the same clinical distances, just different units.
Contact Lens Power Converter
Convert spectacle lens power to the equivalent contact lens power, correcting for vertex distance. Free calculator for optometrists, orthoptists and allied health professionals working with vision correction.
Contact lens power = Spectacle power ÷ (1 − Vertex distance(m) × Spectacle power)
As a lens moves closer to the eye (from spectacle plane to corneal plane), its effective power changes. This formula corrects for that shift — the effect is negligible for low powers but significant beyond roughly ±4.00D.
Practice & Home Support
2 toolsAllied Health Caseload Calculator
Maximum sustainable client caseload and capacity utilisation from your available clinical hours, session length and visit frequency. Free calculator for physios, OTs, speech pathologists and other allied health professionals.
Max caseload = (Clinical hours x 60) ÷ (Session length × Sessions per week)
This is a capacity ceiling based purely on clinical hours — it doesn't account for admin time, travel between visits, report writing or DNA/cancellation rates, all of which reduce real capacity below this maximum.
Home Modification Cost Estimator
Typical Australian cost ranges for common home modifications — ramps, bathroom modifications, stairlifts, doorway widening and grab rails. Free planning calculator for occupational therapists and disability support planning.
Cost range = typical AU market range for job type × scope tier
These are general Australian market cost bands, not quotes. Actual prices vary significantly by state, site access, existing fixtures, tradesperson availability and material choices.