Prep Timing Calculator
Harm-reduction scheduling. No tool can guarantee outcomes; bodies vary.
Now:
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Choose what you want to calculate
1) Planned sex start → best schedule + latest last meal/coffee
2) When can I have sex? → based on food/coffee already taken
Times are HH:MM and interpreted within the last 24h (if you enter a time later than “now”, it is treated as yesterday).
Planned sex start time (HH:MM)
If the time already passed today, it assumes tomorrow.
Partner size
S (short / gentle depth)
M (average)
L (19 cm deep partner)
XL (very deep)
XXL (extremely deep)
Session length goal
Quick (≤1 hour)
~2 hours
~3 hours
~4 hours
6+ hours / marathon
Coffee sensitivity
Normal
High (coffee hits hard)
Meal type (for timing)
Light (toast/banana/soup)
Normal (balanced)
Heavy (burger/fries/salad/onions)
Last meal finished time (HH:MM, last 24h)
For ASAP mode this matters a lot. Leave blank if no meal in last 24h.
Last coffee finished time (HH:MM, last 24h)
Calculate