Put our dog food calculator on your website
Two of our calculators, packaged as widgets you can drop into any page with one paste. Free for clinics, shelters, rescues, breeders and blogs — no account, no ads, no catch beyond one small credit link.
Two calculators, both free
Both widgets run the identical engine as the tools on this site — same formulas, same factors, same worked arithmetic under every result. If the method page improves, your copy improves with it.
Portion calculator widget
The everyday calculator: weight, life stage, body condition, the named-food picker, meals and treats — ending in exact daily calories and per-meal grams, with the realistic range and the weekly and monthly totals. This is the one most sites want: it answers "how much should I feed my dog?" for kibble, wet, fresh and homemade food in a single card.
Raw calculator widget
The raw-feeding calculator: ideal weight, BARF or PMR model, activity presets from weight loss to performance, and the full component split — muscle meat, bone, liver, organ and veg — with weekly and monthly amounts for the shop. Built for raw-feeding blogs, suppliers and breeders whose readers feed by percentage of body weight.
Exactly what your visitors get
These are the real widgets, embedded on this page with the same snippets offered below — change a weight and watch the result update. Nothing is gated, sampled or reduced: the demo is the product.
Portion calculator
Raw calculator
Copy, paste, done
The basic snippets use a fixed height measured on a typical single-column content layout, so the whole widget fits without an internal scrollbar. The advanced snippet adds a twelve-line listener so the frame resizes itself to the exact height of the result — use it if your layout allows scripts.
Portion calculator — basic
The widget lives at dogfoodcalculator.online/embed/portion-calculator/ — that is the URL inside the snippet.
Raw calculator — basic
The widget lives at dogfoodcalculator.online/embed/raw-calculator/ — that is the URL inside the snippet.
Advanced — both widgets, auto-resizing
Who this is for
Vet clinics put the portion widget on their nutrition and weight-management pages, so the "how much should I feed?" conversation starts before the appointment — and the answer the client reads is the same RER/MER arithmetic the clinic itself uses, not a bag chart. Shelters and rescues embed it on adoption pages, so a new owner's first feeding plan is a measured portion for the dog they just took home, in grams, with the two-week adjust-by-condition rule built into the result. Breeders put it on their puppy pages, where the life-stage factors and the growth taper answer the question every buyer asks in the first week. Pet blogs and shops use it to keep a genuinely useful tool on the page their readers are already reading, instead of sending them away to a calculator site — this one.
The deal, in plain terms
The widgets are free for commercial and non-commercial sites alike, with no volume limit. In return: the attribution link under the calculator — "Powered by DogFoodCalculator", pointing at the matching calculator page — must remain visible, unmodified and followed (no nofollow, no hiding it with CSS, no removing it in your page builder). Please don't modify, rebrand or white-label the widget itself. We may improve the calculators over time — better factors, clearer results — and those improvements flow to every embedded copy automatically; that is a feature, and it is also why the widget is served from our host rather than copied. The calculators give starting portions from published formulas; they are not a substitute for veterinary advice, and dogs with medical conditions need a vet-set plan.
If the deal doesn't work for your site, no hard feelings — the calculators on this site are free for your visitors either way, and linking to them normally is always welcome.
How to use this calculator
Copy the snippet
Copy the iframe snippet for the widget you want — the portion calculator or the raw calculator — from the snippet boxes on this page.
Paste it into your page
Paste it into any HTML area: a WordPress Custom HTML block, a Wix embed element, a Squarespace code block, or straight into a page template.
Keep the attribution link
Leave the small 'Powered by DogFoodCalculator' link under the calculator in place and followed — that link is the entire price of the program.
Updates flow automatically
The widget runs the same engine as this site, so formula improvements and corrections appear on your site automatically. There is nothing to maintain.
Frequently asked
Is the embed really free?
Yes — free for vet clinics, shelters, rescues, breeders, blogs and shops, commercial sites included. There is no premium tier, no usage limit and no advertising injected into the widget, ever. The only condition is the small attribution link under the calculator: it stays visible and stays a normal followed link. That link is the entire business model of the program — it is how a free tool earns the authority to keep existing.
Do I need an account or an API key?
No account, no key, no approval process. Copy the snippet from this page and paste it into your site. The widget starts working immediately, because there is nothing to activate on our side — it is the same calculator your visitors would use here, packaged for an iframe.
Will it slow my website down?
Very little. The widget loads from our host, not yours, and the snippets use loading="lazy", so the frame only loads when a visitor scrolls near it. Your page carries no calculator code at all — one iframe tag. If you use the auto-resize snippet, the listener script is twelve lines of plain JavaScript with no library.
Can I remove the 'Powered by' link or restyle the widget?
No — please don't. Keeping the attribution link visible and followed is the one condition of the program, and modifying or white-labelling the widget is outside the deal. The widget itself is brand-light by design: a small logo row at the top and the one-line credit under the result. If you need a fully white-label calculator, this program is not the right fit.
Does it work on WordPress, Wix and Squarespace?
Yes — anywhere an iframe can be pasted. On WordPress, add a Custom HTML block and paste the snippet. On Wix, use an Embed element and choose 'Website' or paste the code directly. On Squarespace, use a Code block. Most website builders, clinic management platforms with custom pages, and shelter software with an embed field work the same way.
Who maintains the numbers inside the widget?
We do — and you never have to touch your page again. The widgets run the exact same engine as this website, built on the published veterinary formulas (RER and MER from AAHA, the Pet Nutrition Alliance, Merck and WSAVA). When the method improves or a factor is corrected, every embedded copy updates at the same moment, because the calculator lives here and your page only frames it.
Is the calculator a substitute for veterinary advice?
No. It produces a starting portion from published formulas — the same starting point a clinic uses before adjusting for the individual dog. Dogs with medical conditions, and pregnant or nursing dogs, need a plan set by their vet. The widget says so in its method, and so should any page that embeds it.
Related calculators
Dog Food Portion Calculator
Meals split exactly — per-meal grams for 1 to 4 feedings a day.
Raw & BARF Calculator
Daily raw grams split into meat, bone, liver, organ and veg. BARF and PMR models.
Dog Calorie Calculator
RER & MER explained and calculated — resting vs daily energy, per life stage.