Repetitive dive planner
Repetitive Dive & Surface Interval Planner
Estimate repetitive-dive residual nitrogen, pressure groups, available no-decompression time and cumulative oxygen exposure.
RNTPressure groupsAir & Nitrox
Calculator
Plan the interval between dives.
Enter two dives and the surface interval. Total dive time is converted to estimated bottom time by subtracting ascent and a 3-minute safety stop.
Your dive day
Add every dive of the day. Surface intervals and residual nitrogen update as you type.
Altitude and water conditions
m
Sea-level table planning is used below. Altitude is shown as a reminder because altitude diving requires dedicated procedures and table/computer adjustments.
Bottom time is estimated by removing ascent to 6 m at 9 m/min (rounded up), a 3-minute safety stop and a final 2-minute ascent.
Day timeline
What the result means
The calculator updates instantly from the values you enter and shows the core planning result in the dark result card.
Use conservative inputs
Use realistic values from your own diving and leave a practical margin for changes in workload, conditions and equipment.
Verify before diving
Treat this page as an educational reference and cross-check the result with your training, analysed gas and an appropriate dive-planning method.
Planning reference only. These calculators are educational reference tools, not a substitute for training, a properly configured dive computer, analysed breathing gas or an approved dive plan. Use conservative values and follow the procedures of your training agency and dive operation.