Fish oil dosage for cats
Turn your cat's weight into a daily omega-3 amount: a 5 kg cat at a 40 mg per kg target needs 200 mg of EPA plus DHA, the figure to compare with the label on the bottle. Free in your browser.
- Free
- Runs in your browser
- No sign-up
- Your data stays on your device
Run — free
Worked example
- Weight
- 5
- Target mg per kg
- 40
- Daily dose mg
- 200
Cats convert plant omega-3 fats into EPA and DHA poorly, so veterinary nutrition doses fish oil as combined eicosapentaenoic and docosahexaenoic acid in milligrams per kilogram of body weight rather than as millilitres of oil. This fish oil dosage for cats calculator multiplies a strictly positive body weight in kilograms by a target EPA/DHA milligrams-per-kilogram rate and returns the daily milligram total you can compare with a product label. Typical educational targets sit near twenty to seventy milligrams per kilogram per day depending on coat support versus inflammatory goals; you supply the target and the engine only scales it.
How daily EPA and DHA milligrams are computed from weight and target
The identity behind a fish oil dosage for cats is a single product: daily combined EPA plus DHA milligrams equal body weight in kilograms times the target milligrams per kilogram you choose. Veterinary nutrition almost always writes marine omega-3 oil this way because cats convert alpha-linolenic acid from flax, chia, and many plant oils into eicosapentaenoic and docosahexaenoic acid very poorly, so the label number that actually scales is the summed long-chain milligrams, not the millilitres sitting in a pump.
A five-kilogram cat at a forty milligram-per-kilogram target therefore needs two hundred milligrams of EPA plus DHA per day; a three-point-two-kilogram cat at fifty milligrams per kilogram needs one hundred sixty milligrams. The target rate must likewise be a strictly positive finite number of milligrams of EPA and DHA per kilogram per day. Optional output keys are omitted rather than set to null.
Rounding is to twelve decimal places so goldens stay stable across JavaScript runtimes without changing the arithmetic.
Where a fish oil dosage for cats calculator earns its keep
Clinic discharge sheets and tele-nutrition forms use a fish oil dosage for cats calculator so a weight from the last exam and a target the veterinarian already chose become one milligram number a caregiver can match to a capsule or pump. Rescue groups and boarding kennels keep the same arithmetic next to the supplement shelf because a kitten at two kilograms and a Maine Coon at eight kilograms must not share a one-pump-for-every-cat rule of thumb.
Classroom labs in veterinary nursing assign the identity so students see why milligrams per kilogram, not millilitres of oil, is the quantity that scales with body size. Failed validation does not consume balance. The calculator does not replace a veterinarian, does not convert vitamin A or D that some oils carry, and does not split EPA from DHA: send the combined milligrams-per-kilogram target your protocol already uses.
What you can do with it
Discharge sheets after a clinic weigh-in
Turn the last recorded body weight and the veterinarian's EPA/DHA milligrams-per-kilogram target into a daily milligram total a caregiver can match to the bottle label.
Rescue and boarding supplement shelves
Stop sharing one pump across kittens and large adults: scale the same protocol target by each cat's kilograms so the milligram dose follows body size.
FAQ
How is fish oil dosage for cats calculated?
Multiply body weight in kilograms by the target combined EPA plus DHA in milligrams per kilogram per day.
What milligrams-per-kilogram target should I enter?
This engine does not invent a clinical target. Everyday educational figures often sit near 20 mg/kg for coat support, around 40 mg/kg as a maintenance example, and 50–70 mg/kg in inflammatory teaching tables. Use the rate your veterinarian or protocol already specified.
Does the calculator convert millilitres of oil or split EPA from DHA?
No. It returns combined EPA+DHA milligrams per day.
What happens if weight is zero, negative, or missing?
Weight in kilograms must be a strictly positive finite number. Zero, negative, NaN, and non-numeric values are rejected and are not billed. The target milligrams-per-kilogram rate must also be strictly positive.
How much EPA and DHA does a 5 kg cat need at 40 mg per kg?
It needs 200 mg of combined EPA plus DHA per day, because the calculator multiplies 5 kg by 40 mg per kg.
Related tools
For developers — API access
Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.
API endpoint
Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.
Call it from your stack
curl -X POST https://api.kit.forhosting.com/bio/fish-oil-dosage-for-cats \
-H "Authorization: Bearer $KIT_KEY" \
-H "Content-Type: application/json" \
-d '{"weight":5,"target_mg_per_kg":40}'const res = await fetch("https://api.kit.forhosting.com/bio/fish-oil-dosage-for-cats", {
method: "POST",
headers: {
"Authorization": `Bearer ${process.env.KIT_KEY}`,
"Content-Type": "application/json"
},
body: JSON.stringify({
"weight": 5,
"target_mg_per_kg": 40
})
});
const { task_id } = await res.json();import os, requests
res = requests.post(
"https://api.kit.forhosting.com/bio/fish-oil-dosage-for-cats",
headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
json={
"weight": 5,
"target_mg_per_kg": 40
},
)
task_id = res.json()["task_id"]<?php
$res = file_get_contents("https://api.kit.forhosting.com/bio/fish-oil-dosage-for-cats", false, stream_context_create([
"http" => [
"method" => "POST",
"header" => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
"content" => '{"weight":5,"target_mg_per_kg":40}',
],
]));
$task = json_decode($res, true);body := bytes.NewBufferString(`{"weight":5,"target_mg_per_kg":40}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/bio/fish-oil-dosage-for-cats", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)Example request
{
"weight": 5,
"target_mg_per_kg": 40
}Example response
{
"task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
"type": "bio.fish_oil_dosage_for_cats",
"status": "queued",
"_links": {
"result": "/tasks/tsk_…/result"
}
}The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.
Pricing
Published price — no tokens, no invented credits. A failed task is never charged.
Errors
| HTTP | Code | Meaning |
|---|---|---|
401 | unauthorized | Missing or invalid API key. |
402 | insufficient_balance | Your balance doesn't cover the task price. |
404 | unknown_type | That task type doesn't exist. |
429 | rate_limited | Too many requests. Use the webhook instead of polling. |
Technical notes
Weight that is missing, zero, negative, or not a finite number fails with invalid_input instead of inventing a dose. The same pure arithmetic runs free in the browser and over the API at $0.002 per successful call.
How daily EPA and DHA milligrams are computed from weight and target
The engine echoes the cleaned weight and target, returns daily_dose_mg as the primary figure, restates the formula so a client can print the identity next to the answer, and names the method epa_dha_mg_per_kg. Weight must be a strictly positive finite number: zero, negative, missing, NaN, Infinity, and non-numeric strings fail with invalid_input naming the field, because a hollow dose from a bad scale reading is worse than an honest error.
Input contract, common milligram-per-kilogram targets, and errors
Everyday educational targets cluster around twenty milligrams per kilogram for coat and general wellness support, around forty milligrams per kilogram as a widely cited maintenance figure, and fifty to seventy milligrams per kilogram when a protocol is thinking about inflammatory or osteoarthritic support—those figures are literature-shaped hints, not a prescription this calculator invents. You still choose the target; the engine only multiplies. Weight is rejected above fifty kilograms and the target is rejected above five hundred milligrams per kilogram so a unit mix-up, such as grams typed as kilograms or millilitres typed as milligrams per kilogram, fails closed instead of silently overdosing the result. POST a JSON body with two required numbers. weight is the cat's body weight in kilograms; aliases include weight_kg, cat_weight, body_weight, and kg. target_mg_per_kg is the desired combined EPA and DHA milligrams per kilogram per day; aliases include target, dose_mg_per_kg, epa_dha_mg_per_kg, mg_per_kg, and target_epa_dha. Each field may arrive as a JSON number or as a numeric string. On success the body includes weight, target_mg_per_kg, daily_dose_mg, formula, method, and a note that this is an educational milligram total, not a veterinary prescription and not a conversion from a specific brand's pump. Compare daily_dose_mg with the EPA and DHA milligrams printed on the product, not with the millilitres of oil, because concentrations vary by more than a factor of ten across veterinary and grocery bottles.
Where a fish oil dosage for cats calculator earns its keep
Keep requests small, pin daily_dose_mg in continuous integration, and you get reproducible educational numbers for LMS plugins, edge workers, and spreadsheet add-ins without standing up a clinical information system.
Integration use cases
Veterinary nursing labs
Give students two weights at the same milligrams-per-kilogram target so they can verify by hand that daily_dose_mg is exactly the product of weight and target.
Technical questions
What does the fish oil dosage for cats calculator cost?
The browser tool is free. API requests use prepaid KIT balance at $0.002 per successful call; invalid input is not billed.