Maciej ChoromanskiFounder, SocialFlow · Founder at SocialFlow

Build a custom calorie calculator for your coaching business in 10 minutes. No coding. No developer.

23 Apr 2026 · 1 min

Watch on YouTube

1:24

In this short instructional video, the presenter demonstrates how online fitness coaches can create a branded, interactive calorie calculator without any programming knowledge using the free no‑code platform Lovable.dev. The process is broken into four quick steps: (1) sign up for a free Lovable account, (2) start a new project and paste a detailed prompt that specifies the inputs (gender, age, height, weight, activity level), the BMR calculation, maintenance and goal calorie options, protein recommendation, dark‑theme design, and a call‑to‑action button linking to the coach’s Instagram, (3) link the calculator to a Google Sheet as a simple database, test the tool with personal data to verify accuracy, and (4) publish the app to obtain a live URL that can be shared in bios, websites, or automation flows. The presenter explains why this works as a lead‑generation funnel: the free, useful, and branded tool provides value, showcases the coach’s expertise, and directs users to contact the coach for a custom plan via the CTA. Viewers are invited to comment “calculator” to receive the exact Lovable prompt for easy replication.

Chapters

Here's how to build a custom calorie calculator for your online fitness coaching business in less than 5 minutes. No, you don't need to know how to code. We are going to use a free tool called Lovable. Step 1, go to lovable.dev and create a free account. Takes 10 seconds. Step 2, start a new project and type this in into the chat box. Build me a calorie calculator for online fitness coaching clients. It should ask for gender, age, height, weight, and activity level with a dropdown for sedentary, lightly active, moderately active, very active, and extra active. Calculate BMR multiplied by activity factor for maintenance calories. Then show 3 options: fat loss at -500 calories, maintenance, and lean bulk at +300. Show protein recommendations at 1 gram per pound of body weight. Make it look clean and professional with a dark theme. Add a call to action button at the bottom that says, want a custom plan? DM me @transform on Instagram and I'll send you the details. Then you want to link a database like a Google Sheet. Hit enter and watch it build within 2 to 3 minutes. Step 3, test it with your own stats. Make sure the numbers actually look right. And lastly, hit publish. You get a live URL you can put anywhere. Instagram bio, link in bio page, website, DM automation, Now, why this works? You just gave someone a genuinely useful tool for free. It looks branded, it's professional, it's a website, it's a tool, interactive tool that they can use. And when they see their maintenance calories and think, cool, but how do I actually structure my meals around this? The next step is reaching out to you and buying your coaching. That's why we have that call to action right now. Comment calculator and I'll send you the exact lovable prompt so you can just copy and paste it.