Plan oral chemo doses with transparent math. Enter height, weight, and creatinine to estimate tablets. Review safety notes and verify dosing before dispensing today.
| Case | Height (cm) | Weight (kg) | Age | Sex | SCr (mg/dL) | Regimen | Estimated BSA (m²) | CrCl (mL/min) | Start Dose (mg/m² BID) |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 170 | 70 | 60 | M | 1.0 | Monotherapy (14 days on, 7 off) | ~1.82 | ~77.8 | 1250 |
| 2 | 160 | 60 | 72 | F | 1.2 | Combination (14 days on, 7 off) | ~1.63 | ~39.4 | 1000 (then x0.75) |
| 3 | 180 | 85 | 55 | M | 0.9 | Lower-dose combination (14 days on, 7 off) | ~2.06 | ~132.0 | 800 |
Many capecitabine protocols dose by body surface area (BSA), reported in square meters. This calculator uses the Mosteller method, BSA = √((height_cm × weight_kg)/3600), because it is widely adopted and easy to audit. A patient at 170 cm and 70 kg has an estimated BSA near 1.82 m², which scales mg/m² regimens into milligram doses per administration.
Capecitabine is frequently given twice daily (BID) on treatment days, with planned rest periods. Typical patterns include 14 days on therapy followed by 7 days off, forming a 21‑day cycle, though some protocols use lower continuous doses. The calculator shows per‑dose milligrams, daily total (two doses), and drug‑day totals per cycle so inventory and counseling can be aligned to the intended schedule.
Renal clearance influences exposure. Many product labels recommend no initial reduction when creatinine clearance (CrCl) is above 50 mL/min, a 25% reduction (factor 0.75) when CrCl is 30–50 mL/min, and avoidance when CrCl is below 30 mL/min. The calculator can estimate CrCl using Cockcroft–Gault when age, sex, weight, and serum creatinine are entered, or accept a manual CrCl value from your workflow.
Capecitabine tablets are commonly available as 150 mg and 500 mg strengths. Exact calculated doses rarely match tablet totals, so rounding is often required by protocol. The calculator can suggest the closest combination of 150 mg and 500 mg tablets per dose, report the difference (Δ) from the target, and optionally round to the nearest 150 mg before selecting tablets to keep calculations consistent.
For audit trails, the tool stores recent calculations in the session and exports them to CSV or a simple PDF summary. This supports independent double‑checks: confirm inputs, verify regimen mg/m², confirm CrCl method, and ensure the contraindication screen is respected. Because toxicity‑based modifications depend on clinical assessment and local protocols, use the output as a transparent estimate rather than a prescribing decision. When used consistently, standardized inputs reduce variability between staff members and improve communication with patients about dose timing, missed doses, and storage requirements in busy outpatient clinics.
No. It produces an educational dose estimate from your inputs and selected regimen. Final orders must follow the treating oncology protocol, labeling, and clinical judgment, including toxicity adjustments and contraindication screening.
The calculator uses the Mosteller equation: BSA = √((height_cm × weight_kg)/3600). It is commonly used in oncology dosing because it is simple, reproducible, and easy to verify manually.
If creatinine clearance is provided, the tool applies an initial factor: 1.00 when CrCl > 50 mL/min, 0.75 when CrCl is 30–50 mL/min, and flags CrCl < 30 mL/min as contraindicated.
When manual CrCl is not used, the calculator can estimate CrCl with Cockcroft–Gault using age, sex, weight, and serum creatinine. If your site uses a different weight convention, enter a manual CrCl instead.
Capecitabine tablets are commonly 150 mg and 500 mg. The tool searches practical combinations to find the closest total per dose, reports the difference from the target, and can optionally round to the nearest 150 mg first.
Exports contain recent session calculations, including timestamp, regimen, BSA, CrCl, renal factor, selected mg/m², adjusted per-dose milligrams, and the suggested tablet combination. Use them for documentation and double-checks.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.