Horse Pregnancy Calculator - Mare Gestation Chart

Mare Gestation Calculator

Mare Bred/Serviced Date

Result

Horse Pregnancy Calculator

Horse Pregnancy Calculator or Mare Gestation Calculator will help you to find the estimated due date for your favorite pregnant Horse due date.
The mare gestation calculator will estimate your pregnant mare's foaling day (due date) and guide you through all the stages of the horse's gestational period.

Steps To Calculate Horse Pregnancy

Enter the First Date of Horse Mating
Calculate Estimate Foaling Date
Calculate Min & Max Foaling Date

Horse Pregnancy Calculator Formula

You may use the equation identical to the one used in our horse due date calculator:

Pregnancy day = Current date - Mating date

The Horse Pregnancy calculator uses the following formula: You can easily replicate the results of our horse gestation period calculator using a few easy equations:

For the estimated delivery date:
Foaling = MatingDate + 338
338 days = 11 months

For the full range of possible foaling days:
Earliest possible foaling = MatingDate + 331
Latest possible foaling = MatingDate + 346

Signs Of Horse Pregnancy

If you suspect that your Horse is pregnant, look for the following signs that indiHorsee common physical changes during Horse pregnancy length:

Increase of appetite
Weight gain
Swelling of nipples
Rose-colored nipples
Vomiting
Enlarged abdomen
Exhaustion
Affectionate behavior

Horse Gestation Table / Chart

A horse gestation table or chart is another means to determine the due date (foaling date) of a pregnant mare. It could be used interchangeably with an online horse gestation calculator

Horse gestation chart
Equine gestation calendar
Horse gestation chart
Equine gestation calendar

This horse gestation table is based on a 345-day Gestation Period

Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date	Date Bred	Foaling Date
1-Jan	12-Dec	1-Feb	12-Jan	1-Mar	9-Feb	1-Apr	12-Mar	1-May	11-Apr	1-Jun	12-May	1-Jul	11-Jun	1-Aug	12-Jul	1-Sep	12-Aug	1-Oct	11-Sep	1-Nov	12-Oct	1-Dec	11-Nov
2-Jan	13-Dec	2-Feb	13-Jan	2-Mar	10-Feb	2-Apr	13-Mar	2-May	12-Apr	2-Jun	13-May	2-Jul	12-Jun	2-Aug	13-Jul	2-Sep	13-Aug	2-Oct	12-Sep	2-Nov	13-Oct	2-Dec	12-Nov
3-Jan	14-Dec	3-Feb	14-Jan	3-Mar	11-Feb	3-Apr	14-Mar	3-May	13-Apr	3-Jun	14-May	3-Jul	13-Jun	3-Aug	14-Jul	3-Sep	14-Aug	3-Oct	13-Sep	3-Nov	14-Oct	3-Dec	13-Nov
4-Jan	15-Dec	4-Feb	15-Jan	4-Mar	12-Feb	4-Apr	15-Mar	4-May	14-Apr	4-Jun	15-May	4-Jul	14-Jun	4-Aug	15-Jul	4-Sep	15-Aug	4-Oct	14-Sep	4-Nov	15-Oct	4-Dec	14-Nov
5-Jan	16-Dec	5-Feb	16-Jan	5-Mar	13-Feb	5-Apr	16-Mar	5-May	15-Apr	5-Jun	16-May	5-Jul	15-Jun	5-Aug	16-Jul	5-Sep	16-Aug	5-Oct	15-Sep	5-Nov	16-Oct	5-Dec	15-Nov
6-Jan	17-Dec	6-Feb	17-Jan	6-Mar	14-Feb	6-Apr	17-Mar	6-May	16-Apr	6-Jun	17-May	6-Jul	16-Jun	6-Aug	17-Jul	6-Sep	17-Aug	6-Oct	16-Sep	6-Nov	17-Oct	6-Dec	16-Nov
7-Jan	18-Dec	7-Feb	18-Jan	7-Mar	15-Feb	7-Apr	18-Mar	7-May	17-Apr	7-Jun	18-May	7-Jul	17-Jun	7-Aug	18-Jul	7-Sep	18-Aug	7-Oct	17-Sep	7-Nov	18-Oct	7-Dec	17-Nov
8-Jan	19-Dec	8-Feb	19-Jan	8-Mar	16-Feb	8-Apr	19-Mar	8-May	18-Apr	8-Jun	19-May	8-Jul	18-Jun	8-Aug	19-Jul	8-Sep	19-Aug	8-Oct	18-Sep	8-Nov	19-Oct	8-Dec	18-Nov
9-Jan	20-Dec	9-Feb	20-Jan	9-Mar	17-Feb	9-Apr	20-Mar	9-May	19-Apr	9-Jun	20-May	9-Jul	19-Jun	9-Aug	20-Jul	9-Sep	20-Aug	9-Oct	19-Sep	9-Nov	20-Oct	9-Dec	19-Nov
10-Jan	21-Dec	10-Feb	21-Jan	10-Mar	18-Feb	10-Apr	21-Mar	10-May	20-Apr	10-Jun	21-May	10-Jul	20-Jun	10-Aug	21-Jul	10-Sep	21-Aug	10-Oct	20-Sep	10-Nov	21-Oct	10-Dec	20-Nov
11-Jan	22-Dec	11-Feb	22-Jan	11-Mar	19-Feb	11-Apr	22-Mar	11-May	21-Apr	11-Jun	22-May	11-Jul	21-Jun	11-Aug	22-Jul	11-Sep	22-Aug	11-Oct	21-Sep	11-Nov	22-Oct	11-Dec	21-Nov
12-Jan	23-Dec	12-Feb	23-Jan	12-Mar	20-Feb	12-Apr	23-Mar	12-May	22-Apr	12-Jun	23-May	12-Jul	22-Jun	12-Aug	23-Jul	12-Sep	23-Aug	12-Oct	22-Sep	12-Nov	23-Oct	12-Dec	22-Nov
13-Jan	24-Dec	13-Feb	24-Jan	13-Mar	21-Feb	13-Apr	24-Mar	13-May	23-Apr	13-Jun	24-May	13-Jul	23-Jun	13-Aug	24-Jul	13-Sep	24-Aug	13-Oct	23-Sep	13-Nov	24-Oct	13-Dec	23-Nov
14-Jan	25-Dec	14-Feb	25-Jan	14-Mar	22-Feb	14-Apr	25-Mar	14-May	24-Apr	14-Jun	25-May	14-Jul	24-Jun	14-Aug	25-Jul	14-Sep	25-Aug	14-Oct	24-Sep	14-Nov	25-Oct	14-Dec	24-Nov
15-Jan	26-Dec	15-Feb	26-Jan	15-Mar	23-Feb	15-Apr	26-Mar	15-May	25-Apr	15-Jun	26-May	15-Jul	25-Jun	15-Aug	26-Jul	15-Sep	26-Aug	15-Oct	25-Sep	15-Nov	26-Oct	15-Dec	25-Nov
16-Jan	27-Dec	16-Feb	27-Jan	16-Mar	24-Feb	16-Apr	27-Mar	16-May	26-Apr	16-Jun	27-May	16-Jul	26-Jun	16-Aug	27-Jul	16-Sep	27-Aug	16-Oct	26-Sep	16-Nov	27-Oct	16-Dec	26-Nov
17-Jan	28-Dec	17-Feb	28-Jan	17-Mar	25-Feb	17-Apr	28-Mar	17-May	27-Apr	17-Jun	28-May	17-Jul	27-Jun	17-Aug	28-Jul	17-Sep	28-Aug	17-Oct	27-Sep	17-Nov	28-Oct	17-Dec	27-Nov
18-Jan	29-Dec	18-Feb	29-Jan	18-Mar	26-Feb	18-Apr	29-Mar	18-May	28-Apr	18-Jun	29-May	18-Jul	28-Jun	18-Aug	29-Jul	18-Sep	29-Aug	18-Oct	28-Sep	18-Nov	29-Oct	18-Dec	28-Nov
19-Jan	30-Dec	19-Feb	30-Jan	19-Mar	27-Feb	19-Apr	30-Mar	19-May	29-Apr	19-Jun	30-May	19-Jul	29-Jun	19-Aug	30-Jul	19-Sep	30-Aug	19-Oct	29-Sep	19-Nov	30-Oct	19-Dec	29-Nov
20-Jan	31-Dec	20-Feb	31-Jan	20-Mar	28-Feb	20-Apr	31-Mar	20-May	30-Apr	20-Jun	31-May	20-Jul	30-Jun	20-Aug	31-Jul	20-Sep	31-Aug	20-Oct	30-Sep	20-Nov	31-Oct	20-Dec	30-Nov
21-Jan	1-Jan	21-Feb	1-Feb	21-Mar	1-Mar	21-Apr	1-Apr	21-May	1-May	21-Jun	1-Jun	21-Jul	1-Jul	21-Aug	1-Aug	21-Sep	1-Sep	21-Oct	1-Oct	21-Nov	1-Nov	21-Dec	1-Dec
22-Jan	2-Jan	22-Feb	2-Feb	22-Mar	2-Mar	22-Apr	2-Apr	22-May	2-May	22-Jun	2-Jun	22-Jul	2-Jul	22-Aug	2-Aug	22-Sep	2-Sep	22-Oct	2-Oct	22-Nov	2-Nov	22-Dec	2-Dec
23-Jan	3-Jan	23-Feb	3-Feb	23-Mar	3-Mar	23-Apr	3-Apr	23-May	3-May	23-Jun	3-Jun	23-Jul	3-Jul	23-Aug	3-Aug	23-Sep	3-Sep	23-Oct	3-Oct	23-Nov	3-Nov	23-Dec	3-Dec
24-Jan	4-Jan	24-Feb	4-Feb	24-Mar	4-Mar	24-Apr	4-Apr	24-May	4-May	24-Jun	4-Jun	24-Jul	4-Jul	24-Aug	4-Aug	24-Sep	4-Sep	24-Oct	4-Oct	24-Nov	4-Nov	24-Dec	4-Dec
25-Jan	5-Jan	25-Feb	5-Feb	25-Mar	5-Mar	25-Apr	5-Apr	25-May	5-May	25-Jun	5-Jun	25-Jul	5-Jul	25-Aug	5-Aug	25-Sep	5-Sep	25-Oct	5-Oct	25-Nov	5-Nov	25-Dec	5-Dec
26-Jan	6-Jan	26-Feb	6-Feb	26-Mar	6-Mar	26-Apr	6-Apr	26-May	6-May	26-Jun	6-Jun	26-Jul	6-Jul	26-Aug	6-Aug	26-Sep	6-Sep	26-Oct	6-Oct	26-Nov	6-Nov	26-Dec	6-Dec
27-Jan	7-Jan	27-Feb	7-Feb	27-Mar	7-Mar	27-Apr	7-Apr	27-May	7-May	27-Jun	7-Jun	27-Jul	7-Jul	27-Aug	7-Aug	27-Sep	7-Sep	27-Oct	7-Oct	27-Nov	7-Nov	27-Dec	7-Dec
28-Jan	8-Jan	28-Feb	8-Feb	28-Mar	8-Mar	28-Apr	8-Apr	28-May	8-May	28-Jun	8-Jun	28-Jul	8-Jul	28-Aug	8-Aug	28-Sep	8-Sep	28-Oct	8-Oct	28-Nov	8-Nov	28-Dec	8-Dec
29-Jan	9-Jan			29-Mar	9-Mar	29-Apr	9-Apr	29-May	9-May	29-Jun	9-Jun	29-Jul	9-Jul	29-Aug	9-Aug	29-Sep	9-Sep	29-Oct	9-Oct	29-Nov	9-Nov	29-Dec	9-Dec
30-Jan	10-Jan			30-Mar	10-Mar	30-Apr	10-Apr	30-May	10-May	30-Jun	10-Jun	30-Jul	10-Jul	30-Aug	10-Aug	30-Sep	10-Sep	30-Oct	10-Oct	30-Nov	10-Nov	30-Dec	10-Dec
31-Jan	11-Jan			31-Mar	11-Mar			31-May	11-May			31-Jul	11-Jul	31-Aug	11-Aug			31-Oct	11-Oct			31-Dec	11-Dec

Summary

Overall Horse Pregnancy Due Date Calculator will give you the pregnancy date of Horse Due Date. Check More Pet And Animal Related Calculators on Drlogy Calculator to get the exact solution for your questions.

Reference

Symptoms and Stages of Pregnancy in Horses [1].
Pregnancy Determination in Horses [2].

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Mare Gestation Calculator FAQ

How do you calculate mare due date?

To calculate how far along your mare is, follow these steps:

Take the current date.
Get the mating date.
Subtract mating date from current date: Current date - Mating date
Now you know how the current length of your horse's pregnancy!
Keep in mind, the average horse pregnancy length is equal to 338 days.

How many days pregnant is my mare?

The average length of gestation for horses is 320 – 360 days.
The mare gestation calculator will estimate your pregnant mare's foaling day (due date) and guide you through all the stages of the horse gestational period

How far along is my mare?

If you know the breeding (mating) date, it's effortless to establish the day of your mare's pregnancy.
You may use the equation identical to the one used in our horse due date calculator:
Pregnancy day = Current date - Mating date