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7 Free Fitness Calculators for Your Website

Embed professional fitness calculators on your blog, gym website, or training platform in 30 seconds. No coding required. No fees. No branding.

How to Embed (3 Steps)

  1. Choose a calculator below and click "Copy Code"
  2. Paste the code into your article, page, or sidebar where you want the calculator to appear
  3. Adjust the height if needed (500-700px works best for most calculators)
📊

BMI Calculator

Calculate Body Mass Index with WHO standard categories.

  • Metric & imperial units
  • WHO health categories
  • Mobile responsive
🔥

TDEE Calculator

Total Daily Energy Expenditure using Mifflin-St Jeor equation.

  • 5 activity levels
  • 3 goals: lose/maintain/gain
  • Metric & imperial
🍎

Calorie & Macro Calculator

Daily calories and protein/carbs/fat breakdown.

  • Macro breakdown
  • Weight goals
  • Easy to use
💪

1RM Calculator

One Rep Max calculator with training percentages.

  • 50%-95% training %
  • 5 strength levels
  • kg/lb switching
🏋️

Bench Press Calculator

Bench press 1RM with sport-specific standards.

  • Bench press standards
  • 9-tier training table
  • kg/lb switching
🦵

Squat Calculator

Squat 1RM with squat-specific strength standards.

  • Squat standards
  • 9-tier training table
  • kg/lb switching
💰

Gym ROI Calculator

Calculate gym investment, profit, payback period & ROI.

  • Investment breakdown
  • Monthly profit estimate
  • Payback period & ROI%

Embed Codes (Click to Copy)

1. BMI Calculator

<iframe src="https://www.zeallsport.com/widgets/bmi-calculator.html" width="100%" height="500" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

2. TDEE Calculator

<iframe src="https://www.zeallsport.com/widgets/tdee-calculator.html" width="100%" height="650" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

3. Calorie & Macro Calculator

<iframe src="https://www.zeallsport.com/widgets/calorie-calculator.html" width="100%" height="600" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

4. 1RM Calculator

<iframe src="https://www.zeallsport.com/widgets/1rm-calculator.html" width="100%" height="600" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

5. Bench Press Calculator

<iframe src="https://www.zeallsport.com/widgets/bench-press-calculator.html" width="100%" height="700" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

6. Squat Calculator

<iframe src="https://www.zeallsport.com/widgets/squat-calculator.html" width="100%" height="700" frameborder="0" style="border:none;max-width:500px;margin:0 auto;display:block;"></iframe>

7. Gym ROI Calculator

<iframe src="https://www.zeallsport.com/gym-roi-calculator.html" width="100%" height="800" frameborder="0" style="border:none;max-width:700px;margin:0 auto;display:block;"></iframe>

Frequently Asked Questions

Are these calculators really free?

Yes! All 7 calculators are 100% free to use and embed. No sign-ups, no fees, no hidden costs.

Do I need to credit ZEALLSPORT?

No credit required, but we always appreciate a link back to https://www.zeallsport.com if you find our tools useful.

Will the calculators slow down my website?

No. The calculators load in an iframe and are hosted on our fast CDN. They only load when a visitor scrolls to them (lazy loading).

Can I customize the appearance?

The calculators come with a clean, professional design that matches most websites. You can adjust the iframe width and height in the embed code.

Do you have more calculators coming?

Yes! We're regularly adding new fitness and business calculators. Check https://www.zeallsport.com/widgets.html for the latest.

Provided by ZEALLSPORT — Commercial Gym Equipment Manufacturer

Contact: [email protected]

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