BeeMath is the free hive-timeline calculator and bee-math field guide. Enter one observation from your inspection and get the lifecycle math — capping and emergence dates, swarm timing, and the day to open the hive again.
Pick one observation from your inspection. BeeMath back-calculates when the eggs were laid, projects every lifecycle milestone with real dates, and tells you when to inspect next.
Estimates use standard honey-bee development near 35 °C (95 °F). Real timing shifts a day or two with temperature, genetics and nutrition. A planning aid, not a guarantee.
“Bee math” is the honey-bee development calendar every beekeeper learns. Three numbers do most of the work.
A standing egg is under three days old, so fresh eggs prove a laying queen was present this week — even if you never spot her.
A queen cell is capped around day 8, and colonies usually swarm right then. A capped cell means a swarm is imminent or already gone.
A virgin emerges on day 16, then needs about two weeks to mate and start laying. Counting the days tells you when to look.
| Caste | Egg hatches | Cell capped | Emerges |
|---|---|---|---|
| Worker | Day 3 | Day 9 | Day 21 |
| Queen | Day 3 | Day 8 | Day 16 |
| Drone | Day 3 | Day 10 | Day 24 |
Long-form, no-fluff guides built on the same bee math the calculator runs on.
Bee math is the day-by-day development calendar of the honey bee. Learn the worker, queen and drone timelines, why each number matters at the hive, and how to use them.
Read the guide →You do not need to spot the queen to know she is there. Learn the egg test, the layered signs of a queenright colony, and how to read the difference between queenless and laying-worker hives.
Read the guide →Swarming is natural, not failure. Learn to read the warning signs weeks ahead, the proven prevention methods, and how to catch a swarm using the bee-math timeline.
Read the guide →Not all queen cells mean the same thing. Learn to read swarm cells, supersedure cells, and emergency cells by their position and context — and what each one is telling you to do.
Read the guide →Everything a first-year beekeeper needs: choosing a hive, the gear that matters, where to put it, how to get bees, and what your first season actually looks like month by month.
Read the guide →Varroa is the number one killer of honey bee colonies. Learn how to monitor mites honestly, when to treat using brood-cycle math, and how to build a year-round plan.
Read the guide →An honest, clutter-free list of beekeeping equipment — what you truly need to start, and what can wait.
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