Free food diary
Search a food by name or scan the barcode, and the diary works out calories, macros and micronutrients for you. Free, and no account is needed to try it.
Calorie calculator
A quick calorie calculator for checking a single food or meal. No sign-in, and entries stay on your own device only.
Blog
RestinCal started as a tool for my own everyday life. In the blog I share what actually worked: routines, honest logging and small changes.
All articles →
How automating everyday life helped me lose almost 40 kg, and how to build lasting habits.
Why weight loss seems to stall even when everything looks right on paper.
Easy tips for an everyday calorie deficit and their long-term benefits.
Basal metabolic rate with the Mifflin–St Jeor equation, and how it differs from TDEE.
Recipes
56 everyday calculators
A savings goal, a daily travel budget, fuel costs, battery runtime or gross margin. Every calculator opens instantly, runs in your own browser and needs no account.
Goal reached in November 2027
Spending money lasts the whole trip
Appearance
Choose dark or light mode and a theme. Your choice is saved and applies to the whole site, including the diary, the calculators and RestinBot. You will find more colours and fonts in Settings.
Calculators
Age, days between dates and deadlines.
3 calculators ↗Fuel, journeys and comparing car powertrains.
14 calculators ↗Property price and rent per square metre.
5 calculators ↗DPI, batteries, electrical values and mixing ratios.
4 calculators ↗Paces, sets, training volume and 1RM.
5 calculators ↗Trip budget, daily budget and time difference.
6 calculators ↗Food budget, parties and pet food.
3 calculators ↗Savings goal timeline and monthly saving.
1 calculator ↗Oven temperatures and raw-to-cooked conversions.
5 calculators ↗Gross margin, customer acquisition and projects.
10 calculatorsPopular calculators
Each calculator opens on its own page, explains the calculation and processes your values directly in your browser.
Estimate when you will reach your savings goal.
Open →Divide an amount into two parts using a ratio.
Open →Estimate runtime from capacity and load.
Open →Divide travel spending money across your days.
Open →Calculate food spending per person and day.
Open →Convert a target time into pace per kilometre.
Open →Compare property prices per square metre.
Open →Calculate gross margin in money and as a percentage.
Open →More nutrition tools
Calculate your energy needs, browse recipes with nutrition values and check the nutrition of any food.
Calculator values are not sent to a cloud server.
Open a calculator and start right away. An account is only needed for cloud storage.
Add RestinCal to your phone's home screen or your desktop.
Behind RestinCal
I design clear websites, build chatbots that fit the site and help make digital services easier to use. RestinCal is my own practical example.
I also made the video thumbnails myself. At its best, CTR stayed above 7 percent.
Hundreds of hours of self-study on using generative AI in design, content creation, problem-solving and development.
Clear landing pages and responsive layouts.
A help or FAQ bot that fits your brand, with your own answers.
User experience, content structure and search visibility.
Agreed updates after launch too.
Project process
Your idea does not need a technical specification yet. We can begin with a need, a problem or an early idea, and I explain what is worth building first.
We define the goal, users and most important function.
You see the direction before the wider implementation begins.
I create the agreed parts and verify them across screen sizes.
You receive the agreed guidance, and maintenance remains a separate choice.
Yes. RestinCal's tools are free to use, with no paywall.
You do not need an account to get started. Signing in is only needed if you want to save your data to the cloud and sync it between devices.
Without signing in, data from tools used locally is stored only in the browser you use. Signing in enables cloud storage and syncing between devices.
The data comes from the food product databases in use and from user entries. Always check up-to-date information on the product package.
No. RestinCal is a self-tracking tool and does not provide a diagnosis or personal treatment advice.
Yes. RestinCal works on phones, tablets and computers without downloading a separate app.
Free, no credit card. Sign in with Google and your entries are saved to the cloud and move between devices.
