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Free nutrition calculators

Quick, accurate health calculators — no sign-up. Work out your calories, macros, BMI and more, then track it all by photo with LensNutra.

Calorie Calculator Find your daily calorie target (TDEE) and suggested macros. Macro Calculator Split your calories into protein, carbs and fat. Calories Burned Calculator Estimate the calories you burn for any workout. Calorie Deficit Calculator Plan the deficit to reach your goal weight. BMI Calculator Check your body mass index and healthy range. Body Fat Calculator Estimate body fat % with the U.S. Navy method. Ideal Weight Calculator Find a healthy weight range for your height. Water Intake Calculator How much water to drink each day. Protein Intake Calculator Your daily protein target in grams. Intermittent Fasting Calculator Your eating and fasting windows.

Add these calculators to your site — free

Copy the code below to embed any LensNutra calculator on your blog or website. It's free, responsive, and stays up to date automatically.

Calorie Calculator

<iframe src="https://lensnutra.com/embed/calorie-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra calorie-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/calorie-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Macro Calculator

<iframe src="https://lensnutra.com/embed/macro-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra macro-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/macro-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Calories Burned Calculator

<iframe src="https://lensnutra.com/embed/calories-burned" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra calories-burned" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/calories-burned"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Calorie Deficit Calculator

<iframe src="https://lensnutra.com/embed/calorie-deficit" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra calorie-deficit" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/calorie-deficit"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

BMI Calculator

<iframe src="https://lensnutra.com/embed/bmi-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra bmi-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/bmi-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Body Fat Calculator

<iframe src="https://lensnutra.com/embed/body-fat-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra body-fat-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/body-fat-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Ideal Weight Calculator

<iframe src="https://lensnutra.com/embed/ideal-weight-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra ideal-weight-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/ideal-weight-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Water Intake Calculator

<iframe src="https://lensnutra.com/embed/water-intake-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra water-intake-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/water-intake-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Protein Intake Calculator

<iframe src="https://lensnutra.com/embed/protein-intake-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra protein-intake-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/protein-intake-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

Intermittent Fasting Calculator

<iframe src="https://lensnutra.com/embed/intermittent-fasting-calculator" width="100%" height="640" style="border:0;max-width:560px" title="LensNutra intermittent-fasting-calculator" loading="lazy"></iframe>
<script>window.addEventListener("message",function(e){if(e.data&&e.data.lensnutraEmbedHeight){var f=document.querySelector('iframe[src="https://lensnutra.com/embed/intermittent-fasting-calculator"]');if(f)f.style.height=e.data.lensnutraEmbedHeight+"px"}});</script>

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