Maple syrup calculators
Plan the season
Before the first hole: trees, gear, pan size and wood.
Taps per tree
Measure the trunk, get a safe tap count.
Open calculator →Sugaring kit builder
Your shopping list with quantities, from extension rules.
Open calculator →Evaporator size calculator
From tap count to gallons per hour, pan size, storage and cords of wood.
Open calculator →Firewood and fuel calculator
Cords, oil or propane for your season, rig by rig.
Open calculator →While the sap runs
How much you'll make, and what it costs.
Finish the syrup
Hit density, then fix it if you missed.
Finishing temperature
Water's boiling point + 7.1°F — worked out for today.
Open calculator →Hydrometer correction
Correct any reading to 60°F and check your density.
Open calculator →Syrup too thin or too thick
How much to boil off, or add, to land on legal density.
Open calculator →Cheat sheet
The sugarhouse numbers
| Number | What it means | |
|---|---|---|
| 86 ÷ sugar % | Gallons of sap per gallon of syrup (the classic Rule of 86). 2% sap ≈ 43 : 1.Sap to syrup → | Sap to syrup → |
| +7.1 °F | Syrup is done 7.1 °F above the temperature water boils at that day (66.0 °Brix).Finishing temperature → | Finishing temperature → |
| 60 °F | Most maple hydrometers are calibrated at 60 °F; add about 0.05 °Brix per degree above it.Hydrometer correction → | Hydrometer correction → |
| 66.0–66.9 °Brix | Finished syrup density: the US & Canadian minimum, and the Vermont & New Hampshire standard.Hydrometer correction → | Hydrometer correction → |
| 12 in | Smallest trunk diameter to tap under current conservative guidance; a second tap only above 18 in.Taps per tree → | Taps per tree → |
| ≈ 10 gal | Sap from one bucket tap on a sugar maple in an average season, roughly a quart of syrup.Yield estimator → | Yield estimator → |
Reference
Sap-to-syrup ratio chart
| Sap sugar | 1.5% | 2% | 2.5% | 3% | 4% |
|---|---|---|---|---|---|
| Rule of 86 | 57.3 | 43.0 | 34.4 | 28.7 | 21.5 |
| UVM, 66.0 °Bx | 57.7 | 43.2 | 34.5 | 28.7 | 21.5 |
LuckySap · free on iPhone & Android
Log every run. Know your season.
LuckySap is the maple syrup tracker for iPhone and Android: a sap-flow outlook for your trees, a quick log for every collection and boil, and season stats you can compare year to year.
