Fitness calculators your visitors will actually use.
FitNFO drops accurate, beautiful health and fitness calculators into any WordPress page — BMI, TDEE, macros, heart-rate zones, one-rep max and more. Instant results, zero API keys, and nothing leaves your server.
- No API key
- Metric & Imperial
- RTL ready
BMI Calculator
Enter your values and calculate instantly.
Try them right now — no sign-up
These are the real plugin calculators running on this page. Enter your numbers and see instant, formula-based results.
TDEE Calculator
Enter your values and calculate instantly.
Macro Calculator
Enter your values and calculate instantly.
Everything a fitness site needs, built in
A focused plugin that does one job brilliantly — and stays out of your way.
30 real calculators
BMI, BMR, TDEE, body fat, macros, 1RM, VO2 max, pace and more — all with proper, documented formulas.
Metric & Imperial
Visitors switch between kg/lb and cm/ft-in on the fly, right inside the calculator.
Searchable directory
A built-in calculator hub with live search that filters as your visitors type.
Calculator Manager
Turn any calculator on or off from the admin, so you only show what fits your site.
Calculator Explorer
Preview any calculator with live sample inputs and a chart before you publish it.
Any page builder
Gutenberg, Elementor, WPBakery, Divi, Bricks, Oxygen or Classic — it is just a shortcode.
RTL & mobile ready
Automatic right-to-left layout for Arabic and Urdu, and a layout that adapts to every screen.
Private by design
No API key, no tracking, no external calls. Tracker data stays in the visitor’s own browser.
One plugin. Every kind of fitness website.
Give your audience tools that answer their questions instantly — and give them a reason to come back.
- Gyms & studiosHelp prospects find their calorie and heart-rate targets before they join.
- Personal trainers & coachesTurn your site into a free consultation tool that builds trust.
- Nutrition & health bloggersAdd interactive calculators to every guide and keep readers engaged.
- Wellness & supplement brandsShow personalised numbers that guide visitors toward the right products.
to add a calculator
Three steps. That is the whole setup.
No accounts, no keys, no configuration screens to fight with.
Install & activate
Add FitNFO Lite from the WordPress plugin directory and activate it.
Plugins → Add New → FitNFO LiteAdd a shortcode
Drop the full directory on a page, or embed just one calculator anywhere.
[fitnfo_calculators]Go live
Visitors get instant results. You get a smarter, stickier fitness website.
[fitnfo_calculator type="tdee-calculator"]
tracked privately
Calculators are the start. Habits are the win.
Lite also ships lightweight engagement tools that keep visitors coming back — all stored locally in their browser.
- Simple Goal TrackerSave one fitness goal locally and keep it in sight.
- 5-Habit Daily TrackerWater, workouts, steps, sleep and protein in one quick check.
- Weekly Wellness Check-InAn educational snapshot of energy, sleep, stress and consistency.
From numbers to a plan you can follow
Add the Coach to give every visitor a personal workout schedule, a meal plan, a food database and an assistant.
Plan Builder
Age, weight and goal in. Weekly workouts, 7-day meals, macros and a printable report out.
Food Lookup
Calories, macros, vitamins and ingredients for any food, plus a daily food diary.
Assistant
Ask about exercises, diet and the plugin. Grounded answers, medical questions redirected safely.
Photo Coach
Upload a photo, analysed privately in your browser, for posture insights, exercises and a diet plan.
Strength & 1RM
Wellness & recovery
Body compositionStart free. Scale when you are ready.
FitNFO Lite is fully functional on its own. Upgrade for a bigger library and advanced tools.
FitNFO Lite
- 30 professional calculators
- Live-search calculator directory
- Metric / Imperial toggle
- Goal, habit & weekly check-in trackers
- Calculator Manager & Explorer
- RTL ready, mobile responsive
FitNFO Pro
- Everything in Lite
- 70 calculators in total
- Advanced nutrition tools
- Powerlifting & body-composition tools
- Endurance & performance tools
- Optional AI-assisted features
FitNFO Enterprise
- Everything in Pro
- 130 calculators in total
- The complete FitNFO library
- Built for gyms, clinics & large sites
- Widest coverage of fitness niches
- Optional AI-assisted features
Questions, answered
Does it work without any API key?
Yes. All 30 calculators in FitNFO Lite work with zero configuration. Results are computed by a lightweight AJAX call to your own WordPress site, so there is no third-party service, subscription or API key involved.
How do I add a calculator to a page?
Use the shortcode [fitnfo_calculator type="bmi-calculator"] and change the type to any calculator slug. To show every calculator with live search, use [fitnfo_calculators].
Does it work with my page builder?
Yes. Because FitNFO uses shortcodes, it works in Gutenberg, Elementor, WPBakery, Divi, Bricks, Oxygen and the Classic Editor.
Can I turn individual calculators off?
Yes. Open FitNFO → Calculator Manager in your WordPress admin to switch any calculator on or off.
Is it mobile responsive and RTL ready?
Yes. The layout adapts cleanly to phones, tablets and desktops, and Arabic and Urdu automatically switch to a right-to-left layout.
What is the difference between Lite, Pro and Enterprise?
FitNFO Lite is free and includes 30 calculators. Pro raises that to 70 and Enterprise to 130, adding advanced nutrition, powerlifting, body-composition, endurance and optional AI-assisted tools. Lite works fully on its own and does not require Pro or Enterprise.
Are the results medical advice?
No. FitNFO calculators are educational estimation aids. Always consult a qualified professional before making health, nutrition or training decisions.
Put a smarter fitness experience on your site today
Install FitNFO Lite free from WordPress.org and have your first calculator live in under five minutes.