In short
- A horse pasture rotation calculator turns your acres, grazing days and rest days into the number of paddocks, the acres in each and how long one full loop takes.
- The rule: rest days / grazing days + 1. Seven days grazing and 21 days rest gives 4 paddocks, the layout UF/IFAS describes for horses.
- UF/IFAS suggests starting with a two-week rest and not grazing below about 3 inches of forage.
- Quantities only, with no prices. A fence builder lays out and quotes the cross-fencing.
On this page
This horse pasture rotation calculator is for Ocala and Marion County owners who want to split a pasture into paddocks before asking a fence builder for a quote. It builds on our paddock layout guide and the acres per horse calculator.
En español: calculadora de rotación de pastos para caballos
| Your numbers | Result |
|---|
Example: 12 acres with a 1 acre sacrifice lot, 5 horses, 7 days of grazing and a 14 to 21 day rest.
How the paddock count is worked out
- Rest and grazing.
You choose grazing days per paddock. Rest days come from the range you select.
- Paddocks.
Rest days / grazing days, rounded up, plus 1 for the paddock being grazed. 14 / 7 + 1 = 3 and 21 / 7 + 1 = 4.
- Acres each.
Grazing acres (total minus sacrifice lot) divided by the paddocks. 11 acres over 3 to 4 paddocks is 2.75 to 3.67 acres.
- Loop.
Paddocks x grazing days is one full loop: 21 to 28 days in the example.
- Stocking check.
Grazing acres divided by horses, compared with the UF/IFAS 2 to 2.5 acre guide.
Paddocks needed by grazing days
| Days grazing | 14 to 21 days rest | 21 to 28 days rest |
|---|---|---|
| 3 | 6 to 8 | 8 to 11 |
| 5 | 4 to 6 | 6 to 7 |
| 7 | 3 to 4 | 4 to 5 |
| 10 | 3 to 4 | 4 |
| 14 | 2 to 3 | 3 |
Arithmetic on the rest / grazing + 1 formula, rounded up. Fewer grazing days means more, smaller paddocks.
Rotation figures from extension sources
| Figure | Value | Source |
|---|---|---|
| First rest to try | About 14 days | UF/IFAS VM268 |
| Typical rotation | 3 to 21 days | UF/IFAS VM268 |
| Four-paddock layout | 1 week on, 3 off | UF/IFAS VM268 |
| Bahiagrass trials | 21 days rest | UF/IFAS AG268 |
| Bahiagrass, ideal | 28 days rest | UF/IFAS Orange Co. |
| Lowest graze height | 3 inches | UF/IFAS VM268 |
Watch out: this counts paddocks, not grass. How many days a paddock can feed your horses depends on forage, season and rain. Start with the shorter grazing time if the grass is eaten down before the days are up.
Notes for an Ocala pasture
- Sacrifice lot. Keep water, feed troughs and shade in the lot so every paddock can rest. See the manure management guide for siting.
- Fence type. Temporary electric fence can divide paddocks for less than permanent cross-fence. See the fence materials calculator.
- Mowing and dragging. VM268 suggests mowing above 3 inches after horses leave. It also says to drag pastures only in hot, dry weather.
- Shelter. Paddocks away from the barn may need a shed; see the run-in shed calculator.
What this calculator does not cover
- Price. No prices here. See horse barn cost in Ocala and the cost calculator.
- Forage amount. It does not estimate grass per acre or how long a paddock lasts.
- Advice on animal health or grazing plans. Ask your county extension office or a vet for a plan.
Questions to ask a fence builder
- Is permanent or temporary cross-fence better for this layout? Ask for both written.
- Where do gates go? Each paddock needs access to the sacrifice lot or water.
- Who sets gate and corner posts? Check that the quote lists them.
- Is the cross-fence in the quote? Use the quote comparison worksheet.
Next step: get a written quote
This tool estimates quantities, not the price or the job. We are a referral service, not a builder; we connect visitors with independent local providers. Use the form below to ask independent local builders for a written quote, and read how to choose a horse barn builder first. To compare bids side by side, use the bid comparison calculator.
Sources
- UF/IFAS VM268, Rotational Grazing Management for Horses (2025): two-week starting rest, 3 inch minimum height, 3 to 21 day rotations, 4 paddock layout and sacrifice lot.
- UF/IFAS AG268, Impact of Grazing Methods on Forage and Cattle Production: 21 day rest in bahiagrass trials.
- UF/IFAS Extension Orange County, Determining Acres per Paddock: paddocks = rest days / grazing days + 1; 28 days rest for bahiagrass.
- UF/IFAS AA216, Pastures and Forage Crops for Horses: 2 to 2.5 acres per horse on average bahiagrass; 1 to 1.5 on productive pasture.
Frequently asked questions
How many paddocks do I need for rotational grazing horses?
A common extension formula divides the rest days by the grazing days and adds one for the paddock being grazed. Seven days of grazing with 21 days of rest is 21 / 7 + 1 = 4 paddocks. UF/IFAS publication VM268 uses the same layout: 4 paddocks, each grazed for a week and rested for 3 weeks.
How long should a pasture rest between grazings in Florida?
UF/IFAS VM268 suggests starting with about a two-week break and says rotations typically run 3 to 21 days. UF/IFAS bahiagrass trials for cattle used a 21 day rest, and a UF/IFAS Orange County extension blog cites 28 days as the ideal for bahiagrass. The right figure depends on forage, season and how short horses graze it, so ask your county extension office.
Do I need a sacrifice lot?
VM268 describes one area that horses can always reach as a sacrifice lot, holding water, feed troughs and shade structures, so the paddocks can rest. The calculator subtracts the lot you enter from the grazing acres. It does not say how big the lot should be.
Does the calculator tell me how many horses my acres support?
Only as a rough check. If you enter horses, it divides the grazing acres by the number of horses and compares that with the UF/IFAS AA216 guidance of 2 to 2.5 acres per horse on average bahiagrass and 1 to 1.5 acres on more productive pasture. For a real stocking decision, ask your county extension office.
Do I need permanent cross-fencing?
Not necessarily. VM268 notes that temporary electric fencing can be an economical alternative to permanent cross-fencing. If you want permanent fence, use our fence materials calculator and ask a builder to quote it.