Relative Dose Intensity (Chemotherapy)
How much of a planned chemotherapy dose intensity one drug actually delivered.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Planned dose per cycle
- 75
- Cycle length
- 21 days
- Planned cycles
- 4
- Cycles given, one per line
- 2026-01-05 75 2026-01-26 75 2026-02-16 75
Result: Relative dose intensity 100.0% over the cycles given; 75.0% over the planned course.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Planned dose per cycle (mg, mg/m2 or units)
- Cycle length
- Planned cycles
- Cycles given, one per line: YYYY-MM-DD dose
How this is calculated
Citation
Hryniuk W, Bush H. J Clin Oncol. 1984;2:1281-1288. Time bases as defined in Pietroluongo E et al. Ther Adv Med Oncol. 2026;18 (cycles given) and Pak J et al. Oncologist. 2024;29:311-315 (planned course). Read the sources: Hryniuk 1984 ↗, Pietroluongo 2026 ↗, Pak 2024 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.